Series MI-14 · 224 instruments catalogued
Other
Instruments that refuse to be filed anywhere else.
In Service
211 built and verified16:10 Aspect Ratio Calculator
Simplify any width and height in pixels to the 16:10 family's lowest-terms ratio, 8:5 — the widescreen shape behind WUXGA, WSXGA+ and WQXGA displays.
In service MI-14-00216:9 Aspect Ratio Calculator
Reduce any video or screen resolution to its simplified 16:9 widescreen ratio — the standard shape behind 1080p, 720p, 4K UHD and streaming video.
In service MI-14-0033D Printing Cost Calculator
Estimate what a 3D print really costs: filament, electricity, machine time and post-processing, plus a failure-rate markup for the prints that don't finish.
In service MI-14-0043D Render Calculator
Estimate total 3D render-farm time from frame count, per-frame render time and parallel worker nodes, in both seconds and hours.
In service MI-14-0054:3 Aspect Ratio Calculator
Reduce any width and height to the simplified 4:3 ratio — the boxy shape of classic CRT monitors, standard-definition TV and early digital cameras.
In service MI-14-006ACT Score Calculator
Calculate your ACT Composite score from your English, Math, Reading and Science section scores using ACT's own average-and-round method.
In service MI-14-007Age on Other Planets Calculator
Convert your age in Earth days into years on Mercury, Venus, Mars and the outer planets, using each planet's real orbital period around the Sun.
In service MI-14-009Amdahl's Law Calculator
Calculate the theoretical speedup from parallelizing part of a task, using Amdahl's Law — the classic 1967 formula bounding speedup by the serial fraction.
In service MI-14-010Angle of Impact Calculator
Find the angle a projectile strikes the ground at, from its vertical and horizontal velocity components, using the standard arctangent trajectory formula.
In service MI-14-011Antipode Calculator
Enter any latitude and longitude to find its antipode — the exact point diametrically opposite on the globe, more often deep ocean than land.
In service MI-14-012AP® Bio Score Calculator
Enter your AP Biology multiple-choice and free-response raw scores to estimate your composite and 1-5 AP score, using a published weighting formula.
In service MI-14-013AP® Chem Score Calculator
Enter your AP Chemistry multiple-choice and free-response raw scores to estimate your composite out of 100 and your 1-5 AP score using a published cutoff table.
In service MI-14-014AP® Lang Score Calculator
Enter your AP English Language multiple-choice score and three essay scores to estimate your composite and 1-5 AP score using a published weighting formula.
In service MI-14-015AP® World Calculator
Enter your AP World History multiple-choice, SAQ, DBQ, and LEQ raw scores to estimate your composite out of 130 and your 1-5 AP score.
In service MI-14-016Aquarium Calculator
Convert tank length, width and height in inches into US gallons of water — the number aquarium stocking, dosing and equipment guides all use.
In service MI-14-018ASCII Converter
Type a list of decimal ASCII code points and decode them straight to text, using the standard Unicode/ASCII code-point table shared by every modern computer.
In service MI-14-019Aspect Ratio Calculator
Reduce any width and height — pixels, inches, centimetres, anything — to its simplest whole-number ratio, from 16:9 screens to 3:2 photos and beyond.
In service MI-14-020Audio File Size Calculator
Estimate the storage a raw PCM or WAV recording needs from its sample rate, bit depth, channel count and duration, in megabytes, before compression.
In service MI-14-021Azimuth Calculator
Calculate the initial compass bearing, or azimuth, from one latitude/longitude point to another along the shortest great-circle path across the globe.
In service MI-14-022Bandwidth Calculator
Enter channel bandwidth in Hz and signal-to-noise ratio to get the Shannon-Hartley channel capacity in bits per second, the theoretical ceiling on data rate.
In service MI-14-023Bandwidth Delay Product Calculator
Enter link bandwidth and round-trip time to get the bandwidth-delay product in bits and bytes — the amount of data 'in flight' on a network path.
In service MI-14-024Base64 Encoder & Decoder
Encode text into Base64 or decode Base64 back into text, using the standard RFC 4648 alphabet and UTF-8 byte handling in both directions.
In service MI-14-025Battery Capacity Calculator
Convert a battery's amp-hour rating and voltage into its true energy capacity in watt-hours — the figure that lets you compare batteries of any voltage fairly.
In service MI-14-026Battery Life Calculator
Estimate how many hours a battery lasts by dividing its watt-hour capacity by a device's power draw in watts — a quick runtime check.
In service MI-14-027Battery Size Calculator
Size a lithium-ion or lead-acid battery for a known load, runtime and allowed depth of discharge, using the remaining-capacity formula for each chemistry.
In service MI-14-028Baud Rate Calculator
Enter bit rate and bits per symbol to get baud rate in symbols per second — the true signaling rate behind any modem or serial-link speed spec.
In service MI-14-029Binary to Text Converter
Type a list of 8-bit binary bytes and decode them straight to text, reading each byte in base 2 and mapping it through the standard ASCII/Unicode table.
In service MI-14-030Blink-free Photo Calculator
Estimate how many photos to take of a group so at least one is blink-free, using average blink-rate statistics and a target confidence level.
In service MI-14-031BPM Calculator
Count how many beats go by over a timed interval and convert that straight into tempo in beats per minute — the same arithmetic behind every tap-tempo button.
In service MI-14-032Cable Impedance Calculator
Calculate a coaxial or twisted-pair cable's characteristic impedance from conductor geometry and dielectric permittivity, using standard formulas.
In service MI-14-033Caesar Cipher Shifter
Shift every letter of your text forward or backward by a fixed number of places to encrypt or decrypt it, using the same single formula in both directions.
In service MI-14-034Camera Field of View Calculator
Calculate a camera's angle of view from sensor size and focal length -- see exactly how wide or narrow a lens frames the scene, in degrees.
In service MI-14-036Carat Weight Calculator
Convert carats to grams, milligrams, jewelers' points, and ounces using the exact 1907 international metric carat definition (1 carat = 200 mg exactly).
In service MI-14-037CBM Calculator
Calculate total shipment volume in cubic meters and chargeable weight from carton dimensions, quantity and weight, using the freight volumetric-weight rule.
In service MI-14-038Chmod Calculator
Tick read, write and execute for owner, group and other, and get the three-digit octal chmod number instantly — no mental math with 4s, 2s and 1s.
In service MI-14-039Chord Calculator
Pick a root note and a chord quality — major, minor, diminished, or augmented — and get the exact notes in that triad, built from the correct stacked intervals.
In service MI-14-041Chord Inversion Calculator
Find the notes of a triad in root position, first inversion or second inversion — pick a root note and quality to see which tone lands in the bass.
In service MI-14-042Chord Progression Generator
Generate the chords for common progressions like I-IV-V-I or I-V-vi-IV in any major key, built from the diatonic triads of that key's major scale.
In service MI-14-043Chord Transposer
Transpose a chord up or down by any number of semitones and see its new root note and full chord tones, using standard 12-note chromatic-scale arithmetic.
In service MI-14-044Christmas Countdown Calculator
Find exactly how many days remain until the next Christmas Day, December 25 — useful for shipping deadlines, travel bookings, and holiday planning.
In service MI-14-046CIDR Calculator
Enter an IPv4 address and CIDR prefix length to find the subnet mask, network and broadcast addresses, usable host range, and total address count.
In service MI-14-047Classroom Spacing Calculator - Coronavirus
Find how many students fit in a classroom by dividing the room's floor area by the space reserved per student, rounded down to a whole number.
In service MI-14-048College GPA Calculator
Calculate your college semester GPA by weighting each course's grade points by its credit hours, the standard method every registrar uses.
In service MI-14-049Container Loading Calculator
Pick a container type — 20ft, 40ft, standard or high-cube — and get its internal length, width and height in meters, straight from the ISO 668:2020 standard.
In service MI-14-050Contrast Ratio Calculator
Enter two RGB colors and get the WCAG contrast ratio, from 1:1 (identical) to 21:1 (black on white). Shows the full G18 luminance working, not just the answer.
In service MI-14-051Cost of Hiring an Expert vs. Hiring a Fresher Calculator
Compare the total payroll cost of hiring an experienced worker against hiring and training a fresher over a set tenure, side by side.
In service MI-14-052Crop Factor Calculator
Enter a sensor's width and height in mm and get its crop factor against full-frame 35mm — the multiplier photographers use to compare lenses across formats.
In service MI-14-054CSS Aspect Ratio Calculator
Turn any pixel width and height into the exact fraction to drop into CSS's aspect-ratio property, so responsive images and embeds keep their proportions.
In service MI-14-055Data Transfer Calculator
Enter a data size in gigabits and a transfer speed in Gbps to get the time a transfer will take — the general size-over-speed identity behind every data move.
In service MI-14-056Dating Theory Calculator
A playful application of the mathematical secretary problem's 1/e rule: reject the first ~37% of people you meet, then pick the next one better than all before.
In service MI-14-057Day of the Week Calculator
Enter any calendar date and instantly find which day of the week it fell — or will fall — on, from ancient anniversaries to dates decades in the future.
In service MI-14-058Days Until Fall Calculator
Count the days from today to the next fall equinox, or edit the date to count down to any recurring annual date, Southern Hemisphere included.
In service MI-14-059Days Until Valentine's Day Calculator
Find exactly how many days remain until the next Valentine's Day, February 14 — handy for booking a dinner reservation or timing flowers before they sell out.
In service MI-14-060Delay and Reverb Calculator
Convert a song's tempo and a note subdivision into the exact millisecond delay or reverb pre-delay time that stays locked to the beat.
In service MI-14-061Depth of Field Calculator
Find your shot's total depth of field from focal length, aperture, circle of confusion and subject distance, with exact near and far focus limits.
In service MI-14-062Diamond Carat Calculator
Estimate a round brilliant diamond's carat weight from its diameter and depth in millimeters, the shape-based formula jewelers use when a scale isn't available.
In service MI-14-063Diamond Weight Calculator
Enter a round-brilliant diamond's average diameter and depth in mm and get its estimated carat weight — the standard mm-to-carat formula for mounted stones.
In service MI-14-064Dimensional Weight Calculator
Work out a box's billable dimensional weight from length, width, and height in inches, using the 139 divisor UPS and FedEx apply to US domestic shipments.
In service MI-14-065DnD Money Conversion
Convert a mixed handful of copper, silver, electrum and gold pieces into a single gold-piece total using D&D 5e's official 10-to-1 coin exchange rates.
In service MI-14-066Download Time Calculator
Enter a file size in megabits and your download speed in Mbps to get download time in seconds — the exact math behind that 'time remaining' progress bar.
In service MI-14-067DPMO Calculator
Calculate DPMO, the Six Sigma metric that standardizes defect rates by scaling defects found to a common denominator of a million opportunities.
In service MI-14-068Drone Flight Time Calculator
Estimate multirotor hover flight time from battery capacity, voltage, usable discharge, and all-up weight, using a standard watts-per-kilogram power estimate.
In service MI-14-069Drone Motor Calculator
Work out how much thrust each motor on a multirotor needs to deliver, from total weight and a target thrust-to-weight ratio, before picking motors.
In service MI-14-070Duty Cycle Calculator
Enter a pulse's on time and its period to get duty cycle as a percentage — the standard PWM measure of how much of each cycle a signal spends high.
In service MI-14-071Earthquake Calculator
Convert an earthquake's magnitude into the seismic energy it released, in joules, using the standard Gutenberg-Richter magnitude-energy relation.
In service MI-14-072Easter Calculator
Enter any year from 1583 onward and find the exact date of Western (Gregorian) Easter Sunday, computed with the classic Meeus/Jones/Butcher algorithm.
In service MI-14-073eDPI Calculator
Calculate eDPI, effective DPI, by multiplying mouse DPI by in-game sensitivity — the number competitive FPS players use to compare aim sensitivity fairly.
In service MI-14-074Encounter Calculator 5e
Rate a D&D 5th edition combat encounter as Trivial, Easy, Medium, Hard, or Deadly, using the official Dungeon Master's Guide XP-threshold and multiplier tables.
In service MI-14-075Engagement Rate Calculator
Turn likes, comments, and shares into an engagement rate as a percentage of followers, the standard formula for comparing posts and accounts of different sizes.
In service MI-14-076Even Parity Bit Calculator
Toggle up to 8 data bits and get the even-parity bit that makes the total count of 1-bits even — classic single-bit error detection.
In service MI-14-077Exposure Calculator
Calculate exposure value (EV) from f-number and shutter speed using the standard photographic EV formula -- see your shot's brightness on one scale.
In service MI-14-078Film Calculator
Convert run-time and frame rate into feet of film stock needed, across 8mm, Super 8, 16mm, and 35mm formats, plus how many 1000-foot rolls that requires.
In service MI-14-079Final Grade Calculator
Find your overall course grade by weighting your current grade and final exam score by the percentages your syllabus assigns them.
In service MI-14-080Flag Calculator | USA
Work out every official US flag dimension — fly length, stripe width, union size, star diameter — from the hoist alone, per federal executive order.
In service MI-14-081Floating-Point Calculator
Enter a decimal number and see its exact IEEE 754 single-precision (32-bit) bit pattern: sign, biased exponent, and mantissa.
In service MI-14-082Focal Length Calculator
Convert a lens's actual focal length into its 35mm-equivalent by applying your camera's crop factor -- compare telephoto reach across sensor formats.
In service MI-14-083Frames to Timecode Calculator
Convert a total frame count into SMPTE timecode (HH:MM:SS:FF) at any frame rate — the readout editors, colorists and VFX artists actually use.
In service MI-14-085Fret Calculator
Enter a scale length and fret number to get the exact distance from the nut, using the twelfth-root-of-two formula every fretted fingerboard is built on.
In service MI-14-086Gender Pay Gap Calculator
Turn two median-earnings figures into the gender pay gap as a percentage, plus the widely-used 'cents per dollar' figure, from any two comparable numbers.
In service MI-14-087Gothic Font Generator
Convert text into Gothic-style Fraktur Unicode characters — real text you can paste anywhere, with five capitals substituted and no digit support.
In service MI-14-088GPA Calculator
Calculate your cumulative GPA by weighting each class's grade points by its credit hours — works for high school or college classes alike.
In service MI-14-089GPA Calculator Pakistan
Calculate a semester GPA on Pakistan's common HEC-style 4-point scale, weighted by each course's credit hours, the way most HEC-recognized universities do.
In service MI-14-090Grade Calculator
Turn points earned out of points possible into a percentage and a standard US letter grade, using the common 90/80/70/60 cutoff scale most schools default to.
In service MI-14-091Grade Curve Calculator
Apply the square-root grading curve to a raw percentage score, a method that boosts lower scores more than higher ones after an unexpectedly hard test.
In service MI-14-092Graduation Calculator by Birthday
Estimate a child's Kindergarten start year and expected graduation year from their date of birth, using the common September 1 age-cutoff convention.
In service MI-14-093Graduation Year Calculator
Find the year a K-12 student is expected to graduate high school, based on their current grade level and the current year.
In service MI-14-094GSD Calculator – Ground Sample Distance
Calculate ground sample distance (GSD) in centimetres per pixel from sensor width, flight altitude, focal length and image width for drone mapping.
In service MI-14-095Guitar String Tension Calculator
Calculate a guitar string's tension in pounds and newtons from target pitch, scale length, and unit weight, the standard formula string makers publish.
In service MI-14-096GWA Calculator – General Weighted Average
Calculate a Philippine General Weighted Average (GWA) from each course's grade and unit load, on the standard 1.00 (highest) to 5.00 (lowest) scale.
In service MI-14-097Hamming Code Calculator
Enter a 4-bit data word and get the three Hamming(7,4) parity bits that let a receiver detect and correct any single flipped bit in transit.
In service MI-14-098Hamming Distance Calculator
Enter two 8-bit strings and get their Hamming distance — the number of positions where they differ, key to error-correcting codes.
In service MI-14-099Harmonic Series Calculator
Enter a fundamental frequency and a harmonic number to get the exact frequency of that overtone — every harmonic is a whole-number multiple of the fundamental.
In service MI-14-100Hash Identifier
Enter how many hex characters your hash string has and see which common algorithms — MD5, SHA-1, SHA-256, and more — produce a digest that length.
In service MI-14-101Hex-to-Text Converter
Paste hexadecimal byte codes, spaced or unspaced, and decode them straight to readable text using standard UTF-8 byte interpretation.
In service MI-14-102High School GPA Calculator
Enter each course's letter grade, level (Regular, Honors, AP/IB), and credits, and get a weighted GPA that rewards taking harder classes.
In service MI-14-103HP Calculator 5e – Dungeons & Dragons
Estimate a D&D 5e character's total hit points from hit die size, Constitution modifier and level, using the official average-roll rule instead of dice.
In service MI-14-104Hyperfocal Distance Calculator
Find the hyperfocal distance for any lens, aperture and circle of confusion -- the focus point keeping everything from half that distance to infinity sharp.
In service MI-14-105IELTS Score Calculator
Combine your Listening, Reading, Writing, and Speaking band scores using IELTS's own official averaging and rounding rule to get your overall band.
In service MI-14-106Image File Size Calculator
Estimate an image's uncompressed file size in megabytes from its pixel dimensions, color bit depth and an optional compression ratio.
In service MI-14-107Image Ratio Calculator
Reduce any photo's pixel width and height to its simplified ratio — 3:2 for full-frame/APS-C sensors, 4:3 for Micro Four Thirds, 1:1 for square crops.
In service MI-14-108Impact Factor Calculator
Calculate a journal's Impact Factor using the official Clarivate JCR formula: citations this year divided by citable items from the prior two years.
In service MI-14-109Impedance Matching Calculator
Enter load and source impedance to get the reflection coefficient (Gamma) and VSWR — the two numbers that show how well an RF load matches its line.
In service MI-14-110Impostor Odds Calculator – Among Us
Find the probability of being the impostor a set number of times across your Among Us games, using the binomial distribution over lobby size and impostor count.
In service MI-14-111IP Address Converter
Enter an IPv4 address in dotted-decimal notation and instantly get its 32-bit decimal integer, binary, and hexadecimal representations.
In service MI-14-112IP Subnet Calculator
Enter an IPv4 address and a CIDR prefix and get the subnet mask, network and broadcast addresses, usable host range, and total host count.
In service MI-14-113KD Calculator (Kill/Death Ratio)
Calculate your kill/death ratio from total kills and deaths — the standard multiplayer shooter stat for gauging combat performance in a match or season.
In service MI-14-114Key Signature Calculator
Pick a major key and get its exact key signature — how many sharps or flats belong on the staff, and exactly which ones — following the circle of fifths.
In service MI-14-115Latitude Longitude Distance Calculator
Find the great-circle distance between two latitude/longitude points using the Haversine formula — the 'as the crow flies' math behind flight-distance tools.
In service MI-14-116Letters to Numbers Converter
Pick any letter A-Z and get its position in the alphabet — the simple A1Z26 cipher used in puzzles, geocaching, and beginner cryptography.
In service MI-14-117LM317 Calculator
Enter R1 and R2 to get the LM317 adjustable regulator's output voltage from the datasheet formula Vout = 1.25V x (1 + R2/R1).
In service MI-14-118Logic Gate Calculator
Pick a gate type and two binary inputs to see the output instantly — all six standard 2-input logic gates in one truth-table calculator for digital logic.
In service MI-14-119Magnification of a Lens Calculator
Calculate a lens's magnification ratio from focal length and subject distance -- find out if you're shooting at 1:1 life-size macro or beyond.
In service MI-14-120Matched Betting Calculator
Enter your back bet's stake and odds plus the exchange's lay odds and commission, and get the lay stake, liability, and profit on both outcomes.
In service MI-14-121Mayan Calendar Converter
Enter any Gregorian date and get its Maya Long Count, Tzolk'in day, and Haab' date, using the widely accepted GMT correlation constant.
In service MI-14-123Minecraft End Portal Finder
Pinpoint a Minecraft stronghold's coordinates from two Eye of Ender throws, using the line-intersection triangulation players use instead of digging blind.
In service MI-14-124Minecraft Stack Calculator
Convert any Minecraft item count into full stacks plus leftover items, using the game's 64-per-stack default or a custom size like 16 for capped items.
In service MI-14-125Mirror Text Generator
Reverse your text's character order and swap letters for horizontal-mirror lookalikes, recreating how a phrase reads when held up to an actual mirror.
In service MI-14-127Morse Code Translator
Pick any letter or digit and get its International Morse Code pattern of dots and dashes, the same standard used in radio and aviation today.
In service MI-14-128Music Duration Calculator
Convert a number of measures, a time signature's beat count, and a tempo into the exact playback duration in seconds — plan song sections and loops precisely.
In service MI-14-129Music Interval Calculator
Enter a number of semitones from 0 to 12 and get the interval's standard name — unison, seconds, thirds, fourths, tritone, fifths, sixths, sevenths, or octave.
In service MI-14-130Music Scale Calculator
Pick a root note and get all seven notes of its major scale, generated from the whole-whole-half-whole-whole-whole-half step pattern every major scale follows.
In service MI-14-131Music Transposition Calculator
Pick a starting note and a number of semitones, up or down, and get the transposed note plus how many octaves that shift crosses.
In service MI-14-132NaNoWriMo Calculator
Enter your current word count, goal, and days left to see exactly how many words a day you need to write to finish a 50,000-word novel draft on time.
In service MI-14-133Nether Portal Calculator
Convert a Minecraft Overworld X or Z coordinate into its matching Nether coordinate using the game's fixed 8:1 ratio, so your portals line up correctly.
In service MI-14-134New Year Countdown Calculator
Find exactly how many days remain until the next New Year's Day, January 1 — perfect for planning a countdown party or timing when your resolutions kick in.
In service MI-14-135New Year's Resolutions Calculator
Enter your current progress, your goal, and the weeks left in the year to find exactly how much progress per week you need to make to hit a resolution on time.
In service MI-14-136Note Frequency Calculator
Enter a number of semitones above or below concert A (440 Hz) and get the exact frequency in Hz, using the standard 12-tone equal-temperament formula.
In service MI-14-137Numbers to Letters Converter
Enter a number from 1 to 26 and get the matching letter of the alphabet — the reverse direction of the simple A1Z26 cipher.
In service MI-14-138Odd Parity Bit Calculator
Toggle up to 8 data bits and get the odd-parity bit that makes the total count of 1-bits odd — the mirror-image convention to even parity.
In service MI-14-139Op-Amp Gain Calculator
Pick inverting or non-inverting configuration, enter Rf and Rin, and get the voltage gain instantly from the standard op-amp formulas.
In service MI-14-140Oxygen Tank Duration Calculator
Enter your cylinder size, tank pressure, and flow rate to estimate how many minutes or hours of oxygen supply a compressed-gas cylinder has left.
In service MI-14-141Pallet Calculator
Enter your pallet and box dimensions plus a max stack height, and get boxes per layer, number of layers, and the total boxes that fit.
In service MI-14-142Parity Bit Calculator
Enter a data-bit sequence of any length, choose even or odd parity, and get the exact parity bit needed to complete the check.
In service MI-14-143Parity Calculator
Toggle 8 data bits and get both the even-parity and odd-parity bit for the same byte at once, side by side, for direct comparison.
In service MI-14-144Password Entropy Calculator
Estimate a password's information-theoretic entropy in bits from its length and character set size, the classic Shannon-style measure of guessability.
In service MI-14-145Pay Gap Calculator
Compare two salaries and get the pay gap as a percentage and as cents earned per dollar — the two ways pay-equity reporting states it.
In service MI-14-146PCB Impedance Calculator
Enter trace width, dielectric height, copper thickness, and dielectric constant to get a microstrip trace's impedance via the IPC-2141 formula.
In service MI-14-147PCB Trace Current Calculator
Enter trace width, thickness, temperature rise, and layer type to find the maximum current a copper PCB trace can carry, per the IPC-2221 formula.
In service MI-14-148PCB Trace Resistance Calculator
Enter trace length, width, thickness and resistivity to get PCB copper trace resistance — key for checking voltage drop and heating.
In service MI-14-149PCB Trace Width Calculator
Enter required current, copper thickness, temperature rise, and layer type to find the minimum PCB trace width needed, per IPC-2221 solved for width.
In service MI-14-150PERT Calculator
Turn optimistic, most likely, and pessimistic time estimates into a single expected duration using the weighted PERT formula from project management.
In service MI-14-151Pi Attenuator Calculator
Enter reference impedance and target attenuation in dB to get the series and shunt resistor values for a symmetrical Pi-pad RF attenuator.
In service MI-14-152Pixel Aspect Ratio Calculator
Calculate pixel aspect ratio (PAR) from a frame's display shape and its pixel grid — the non-square-pixel math behind DV, HDV and anamorphic video formats.
In service MI-14-153Pixels to Print Size Calculator
Convert an image's pixel dimensions into a physical print size at any dpi — the same math print labs and Photoshop use to warn you before a blurry enlargement.
In service MI-14-154Pizza Tip Calculator
Work out a fair tip for your pizza delivery driver from the order total and a tip percentage, plus what you'll pay altogether.
In service MI-14-155Playback Speed Calculator
Find out how long a video, podcast or lecture will take at 1.5x, 2x or any other playback speed, from its original running time.
In service MI-14-156Point Buy Calculator 5e
Total the point-buy cost of a D&D 5e ability score array using the official cost table, and check it against the standard 27-point budget before you commit.
In service MI-14-159Pokémon Go Candy Calculator
Enter your candy count and the candy cost to evolve, plus whether a Lucky Egg is active, to see how many Pokemon you can evolve and the total XP you'll earn.
In service MI-14-157Poker EV Calculator
Calculate the expected value of a poker call from your win probability, the pot size and the amount you must call, to see whether a call is profitable long-run.
In service MI-14-158Poker Odds Calculator
Find the exact probability of hitting at least one out with the cards still to come, using true hypergeometric odds instead of the rule-of-4-and-2 shortcut.
In service MI-14-160Port Length Calculator
Enter target tuning frequency, port diameter, port count, and box volume to find the port length needed to tune a vented speaker enclosure.
In service MI-14-161Portrait Aspect Ratio Calculator
Reduce any vertical width x height in pixels to its simplest ratio, like 9:16 — the format used by Instagram Stories, TikTok and YouTube Shorts uploads.
In service MI-14-162PPI Calculator (Pixels Per Inch)
Calculate a screen's pixel density in PPI from its resolution and diagonal size — the same density figure printed on laptop, phone and monitor spec sheets.
In service MI-14-163Projector Calculator
Work out how far to place a projector from the screen using its throw ratio and your screen width — the placement math on every projector's datasheet.
In service MI-14-164Propagation Delay Calculator
Enter distance and a medium's velocity factor to get one-way propagation delay in milliseconds — how long a signal takes to physically cross a network link.
In service MI-14-165PTE Score Calculator
Enter your PTE Academic overall score (10-90) to see its approximate CEFR level and IELTS and TOEFL iBT equivalents from a published concordance table.
In service MI-14-166Pyramid Block Calculator
Work out the total blocks needed for a square stepped pyramid from its base length, using the sum-of-squares formula for each layer.
In service MI-14-168RAID Calculator
Pick a RAID level, number of drives and per-drive capacity to get usable storage instantly — RAID 0, 1, 5, 6 and 10 capacity formulas in one calculator.
In service MI-14-169Rain to Snow Calculator
Enter rainfall amount and air temperature to estimate equivalent snowfall, using a temperature-banded snow-to-liquid ratio table.
In service MI-14-170Rainfall Calculator
Convert a rainfall depth in millimeters over a catchment area into a water volume in liters — useful for sizing rain barrels, tanks, or drainage.
In service MI-14-171RAM Latency Calculator
Enter CAS latency in clock cycles and memory data rate in MT/s to get real CAS latency in nanoseconds — the actual time behind a CL rating.
In service MI-14-172Recruitment Process Duration Calculator
Add up the hours a hiring round costs — CV screens, phone screens, interview rounds, and offer calls — then split the total across your recruiting team.
In service MI-14-173Reorder Point Calculator
Find the stock level at which to place a new order: average daily usage times lead time, plus safety stock, so you never run out before the next delivery.
In service MI-14-174Resolution Scale Calculator
Find what percentage one resolution is of another, like 4K at 200% of 1080p — useful for display scaling, render-resolution settings and upscale planning.
In service MI-14-175RF Unit Converter
Enter a power level in dBm and get milliwatts instantly — the logarithmic-to-linear power conversion used daily in RF and telecom.
In service MI-14-176Rounds per Minute Calculator
Convert a firearm's time between shots into its cyclic rate of fire in rounds per minute, the standard way rate of fire is measured and compared.
In service MI-14-177Rust Decay Calculator
Enter building material and current health to find how many hours until a Rust (the video game) structure fully decays without upkeep.
In service MI-14-178Salt Dough Calculator
Scale the classic 2:1:1 flour, salt and water salt-dough recipe to any batch size — enter the flour and get the matching salt and water amounts.
In service MI-14-179Sandbox Calculator
Enter your sandbox's shape and dimensions plus fill depth to calculate how much sand you need in cubic feet, pounds, and standard 50 lb bags.
In service MI-14-180Screen Ratio Calculator
Reduce any monitor or TV resolution to its simplest aspect ratio, like 16:9 — a quick way to check what shape screen you're actually buying or comparing.
In service MI-14-181Screen Size Calculator
Find a screen's diagonal size from its physical width and height in inches, using the Pythagorean theorem — handy when the size is missing or in doubt.
In service MI-14-182Semester Grade Calculator
Combine up to three weighted grade categories — like homework, exams and projects — into one overall semester grade.
In service MI-14-183Semitone Calculator
Enter two frequencies in Hz and get the exact interval between them in semitones, using the same log2 formula chromatic tuners and pitch-detection apps use.
In service MI-14-184Sentence Case Converter
Convert any text to sentence case instantly — capitalizes only the first letter of each sentence and lowercases the rest, right in your browser.
In service MI-14-185Shutter Speed Calculator
Find the exact shutter speed needed for a target exposure value at a given aperture -- the EV formula solved for time instead of exposure value.
In service MI-14-186Small Caps Generator
Turn regular text into small-capital Unicode lookalikes you can paste anywhere — bios, captions, chat — no font installation needed.
In service MI-14-187Small Text Generator
Convert one piece of text into three Unicode styles at once — small caps, superscript, and subscript — ready to copy and paste anywhere.
In service MI-14-188Snowman Calculator
Enter the diameter of your snowman's bottom, middle, and head balls plus snow density to calculate the total snow volume and weight you'll need to build it.
In service MI-14-189Speaker Box Calculator
Enter port area, box volume, port length and diameter, and get the vented box's Helmholtz tuning frequency — the resonance a bass reflex port is built around.
In service MI-14-190Streaming Bitrate Calculator
Enter a video's file size in MB and its duration in seconds to get average streaming bitrate in Mbps — the number that decides what connection speed it needs.
In service MI-14-191Streaming Services‘ Royalties Calculator
Enter stream count and platform to estimate music streaming earnings, using rough industry-average per-stream payout rates for six major platforms.
In service MI-14-192Strikethrough Text Generator
Add a strikethrough line through any text using Unicode — paste the result anywhere plain text works, even where rich-text formatting isn't allowed.
In service MI-14-193Subscript Generator
Convert digits and a limited set of lowercase letters into Unicode subscript characters — real text, not formatting, for chemical formulas and more.
In service MI-14-194Sunbathing Calculator
Enter your unprotected burn time, sunscreen SPF, and today's UV index to estimate safe sun time, scaled directly from SPF's own definition.
In service MI-14-195Superscript Generator
Convert text into Unicode superscript characters — nearly complete lowercase coverage, partial uppercase, ready to paste anywhere plain text works.
In service MI-14-196T9 to Text Converter
Decode old phone-keypad digit codes back into letters, using the standard 2=ABC through 9=WXYZ multi-tap mapping every classic keypad phone used.
In service MI-14-197Takt Time Calculator
Find takt time, the Lean manufacturing pace a production line must hit to match customer demand: available production time divided by demand.
In service MI-14-198Test Grade Calculator
Convert points earned on a test or assignment into a percentage grade by dividing by the points possible and multiplying by 100.
In service MI-14-199Text to Binary Converter
Type any text and convert it to 8-bit binary, one zero-padded byte per UTF-8 byte, space-separated for easy reading.
In service MI-14-200Text-to-Hexadecimal Converter
Type any text and convert it to its hexadecimal byte codes, two uppercase digits per UTF-8 byte, space-separated for easy reading.
In service MI-14-202Time Lapse Calculator
Plan a time-lapse shoot: enter shoot duration, capture interval and playback frame rate to see total frames captured and final clip length.
In service MI-14-203Timecode to Frames Calculator
Convert an SMPTE timecode (HH:MM:SS:FF) at a given frame rate into a single absolute frame number, for scripts, EDLs and frame-accurate edits.
In service MI-14-204Tip Calculator
Work out how much to tip and what the total comes to, from your bill amount and a tip percentage — for restaurants, bars, cafes and takeout.
In service MI-14-205Tip from Net Price Calculator
Calculate a tip on the pre-tax, net price of your bill instead of the post-tax total, avoiding tipping on money that never went to the service.
In service MI-14-206Title Case Converter
Convert any text to title case instantly — capitalizes the first letter of every word and lowercases the rest, right in your browser.
In service MI-14-207Total Harmonic Distortion Calculator
Enter a fundamental amplitude with its 2nd and 3rd harmonic amplitudes to get THD as a percentage — the RMS-ratio formula used to rate audio amplifiers.
In service MI-14-208Travel Expenses
Enter mileage, tolls, lodging, and meals to total up your job-interview travel expenses, using the IRS's current published business standard mileage rate.
In service MI-14-209Trick-or-Treat Calculator
Enter the houses you'll visit, the kids in your group, and candy per house to estimate the total pieces your group will bring home on Halloween night.
In service MI-14-210TV Mounting Height Calculator
Enter your seated eye height, viewing distance, and any screen tilt angle to calculate the ideal TV mounting height for comfortable, ergonomic viewing.
In service MI-14-211TV Size Calculator
Enter your TV's screen diagonal and target viewing angle to calculate optimal viewing distance, using the standard 16:9 field-of-view formula.
In service MI-14-212Upload Time Calculator
Enter a file size in megabits and your upload speed in Mbps to get upload time in seconds — built around the slower upload half of an asymmetric connection.
In service MI-14-213Uptime Calculator
Calculate uptime percentage from total time and downtime hours — the same 'nines' math used in SLA and reliability reporting.
In service MI-14-214Vampire Apocalypse Calculator
A just-for-fun exponential-growth simulator: watch a vampire outbreak spread from a few turned victims to a capped population using e^(rate x days) math.
In service MI-14-215Vertical Exaggeration Calculator
Find the vertical exaggeration of a topographic profile: divide the horizontal map-scale denominator by the vertical-scale denominator.
In service MI-14-216Video File Size Calculator (by format)
Estimate a video file's size in megabytes from its bitrate in Mbps and its running time, the same math encoders and streaming platforms use.
In service MI-14-217Video Frame Size Calculator
Find a video's true displayed width from its stored frame size and pixel aspect ratio (PAR) — key for anamorphic formats like NTSC DV with non-square pixels.
In service MI-14-218Vigenère Cipher Calculator
Encrypt or decrypt text with the classic Vigenère cipher: a repeating keyword shifts each letter by a different amount instead of one fixed shift.
In service MI-14-219Vocal Range Calculator
Pick a voice type — soprano through bass — and see its standard operatic range in Hz, from lowest to highest note, plus the note names either boundary falls on.
In service MI-14-220What Grade Was I in Year Calculator
Figure out what grade level you or your kid were in during any past or future year, based on your current grade level and year.
In service MI-14-222Wind Chill Calculator
Calculate wind chill temperature using the official National Weather Service 2001 formula — how cold moving air actually feels against exposed skin.
In service MI-14-224Zombie Invasion Calculator
A for-fun exponential-growth toy: project a zombie outbreak from a handful of infected to a population-capped horde using a simple e^(rate x days) formula.
In serviceOn the Board
13 catalogued · not yet builtThese sheets are numbered and queued. They are listed for transparency about what this series will contain — they are not links yet, because nothing here ships before its formula is verified twice.
- MI-14-008 AI Job Risk Calculator
- MI-14-017 Aquarium Glass Thickness Calculator
- MI-14-035 Capital Case Converter
- MI-14-040 Chord Finder
- MI-14-045 Christmas Tree Calculator
- MI-14-053 Crosstalk Calculator
- MI-14-084 Freight Class Calculator
- MI-14-122 Minecraft Circle Generator
- MI-14-126 mm to carat conversion
- MI-14-167 Quiz: Port Length Calculator
- MI-14-201 The Witcher: Monster Slayer Calculator
- MI-14-221 White Christmas Calculator
- MI-14-223 Wingdings Translator