Others Calculators
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This page is a flat, alphabetical index of every specialty calculator on the site that doesn't fall neatly into Finance, Math, or Health — construction and DIY estimators, automotive tools, science and physics calculators, unit converters, and general web utilities, all 183 of them, in one place.
If you'd rather browse with a proper guide for each subject area — including how to choose the right tool and a full FAQ — visit our categories page instead, which organizes these same tools (plus every other calculator on the site) into topic-specific guides.
Available Tools
183
All requested Others Calculator pages are available below.
Age Calculator
Age Calculator
Calculate exact age, total days lived, and the time remaining until the next birthday.
Date Calculator
Date Calculator
Find the difference between two dates or add and subtract time from a starting date.
Time Calculator
Time Calculator
Calculate the exact duration between two times and account for unpaid breaks.
Hours Calculator
Hours Calculator
Work out daily hours, weekly totals, and overtime from your shift schedule.
GPA Calculator
GPA Calculator
Enter courses with credits and letter grades to calculate weighted GPA and quality points.
Grade Calculator
Grade Calculator
Calculate a weighted course grade and see the score needed on the final exam.
Height Calculator
Height Calculator
Convert height between feet and inches, centimeters, and meters.
Concrete Calculator
Concrete Calculator
Estimate concrete volume in cubic feet, cubic yards, and bag count for slabs or pours.
IP Subnet Calculator
IP Subnet Calculator
Calculate subnet mask, host range, broadcast address, and available hosts from CIDR notation.
Bra Size Calculator
Bra Size Calculator
Estimate band and cup size from underbust and bust measurements.
Password Generator
Password Generator
Generate a strong random password with customizable character sets.
Dice Roller
Dice Roller
Roll multiple dice, apply modifiers, and view the full roll breakdown.
Conversion Calculator
Conversion Calculator
Convert values between common units for length, weight, temperature, and volume.
Fuel Cost Calculator
Fuel Cost Calculator
Estimate fuel needed and trip cost from distance, efficiency, and fuel price.
Voltage Drop Calculator
Voltage Drop Calculator
Estimate conductor resistance and voltage drop by cable size, material, and run length.
BTU Calculator
BTU Calculator
Estimate cooling or heating BTU requirements based on room size and sunlight level.
Square Footage Calculator
Square Footage Calculator
Calculate floor area in square feet, square yards, and square meters.
Time Card Calculator
Time Card Calculator
Paste daily shifts to total weekly hours, regular time, and overtime.
Time Zone Calculator
Time Zone Calculator
Convert a date and time between common UTC offsets.
Love Calculator
Love Calculator
Generate a playful compatibility score based on two names.
GDP Calculator
GDP Calculator
Compute GDP using the expenditure formula: C + I + G + (X - M).
Gas Mileage Calculator
Gas Mileage Calculator
Calculate fuel economy in MPG, km/L, and L/100 km.
Horsepower Calculator
Horsepower Calculator
Convert torque and RPM into horsepower and kilowatts.
Engine Horsepower Calculator
Engine Horsepower Calculator
Estimate engine horsepower from vehicle weight and quarter-mile elapsed time.
Stair Calculator
Stair Calculator
Calculate number of steps, rise per step, tread depth, and stair angle.
Resistor Calculator
Resistor Calculator
Decode 4-band resistor color codes into resistance and tolerance.
Ohms Law Calculator
Ohms Law Calculator
Enter any two electrical values to solve voltage, current, resistance, and power.
Electricity Calculator
Electricity Calculator
Estimate energy usage and monthly electricity cost from wattage and runtime.
Shoe Size Conversion
Shoe Size Conversion
Convert shoe sizes between US men, US women, UK, and EU systems.
Tip Calculator
Tip Calculator
Calculate tip amount, total bill, and cost per person.
Mileage Calculator
Mileage Calculator
Calculate trip mileage from odometer readings and cost per mile.
Density Calculator
Density Calculator
Compute density from mass and volume.
Mass Calculator
Mass Calculator
Calculate mass from density and volume.
Weight Calculator
Weight Calculator
Calculate weight force from mass and gravitational acceleration.
Speed Calculator
Speed Calculator
Calculate speed from distance and travel time.
Molarity Calculator
Molarity Calculator
Calculate molarity from moles and solution volume, or from grams and molecular weight.
Molecular Weight Calculator
Molecular Weight Calculator
Parse a chemical formula and calculate its molecular weight.
Roman Numeral Converter
Roman Numeral Converter
Convert integers to Roman numerals and Roman numerals back to integers.
Golf Handicap Calculator
Golf Handicap Calculator
Estimate a handicap index from score, course rating, and slope rating history.
Sleep Calculator
Sleep Calculator
Find ideal bedtimes or wake-up times based on 90-minute sleep cycles.
Tire Size Calculator
Tire Size Calculator
Calculate tire diameter, circumference, sidewall height, and compare alternate sizes.
Roofing Calculator
Roofing Calculator
Estimate roof area, roofing squares, and shingle bundles with waste and pitch.
Tile Calculator
Tile Calculator
Estimate tile quantity and extra material needed for a floor or wall area.
Mulch Calculator
Mulch Calculator
Estimate mulch volume in cubic feet, cubic yards, and bag count.
Gravel Calculator
Gravel Calculator
Estimate gravel volume and tonnage for landscaping and base layers.
Wind Chill Calculator
Wind Chill Calculator
Calculate how cold the air feels with wind speed taken into account.
Heat Index Calculator
Heat Index Calculator
Estimate the heat index from air temperature and relative humidity.
Dew Point Calculator
Dew Point Calculator
Calculate dew point temperature from air temperature and humidity.
Bandwidth Calculator
Bandwidth Calculator
Calculate transfer speed, transfer time, or file size for network planning.
Base64 Encode / Decode
Base64 Encode / Decode
Encode plain text to Base64 or decode Base64 back to readable text.
URL Encode / Decode
URL Encode / Decode
Encode text for safe use in URLs or decode an encoded string.
Time Duration Calculator
Time Duration Calculator
Measure the duration between two date and time values.
Day Counter
Day Counter
Count the number of days between two dates, with optional inclusive counting.
Day of the Week Calculator
Day of the Week Calculator
Find the weekday for any date and its day number within the year.
QR Code Generator
QR Code Generator
Generate a QR code from any text, URL, or data instantly.
JSON Formatter & Validator
JSON Formatter & Validator
Format, validate, and beautify JSON data with syntax highlighting.
Color Picker / HEX RGB Converter
Color Picker / HEX RGB Converter
Convert colors between HEX, RGB, HSL formats and pick colors visually.
Hash Generator (MD5 / SHA)
Hash Generator (MD5 / SHA)
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input.
Word & Character Counter
Word & Character Counter
Count words, characters, sentences, paragraphs, and reading time.
Case Converter
Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more.
Lorem Ipsum Generator
Lorem Ipsum Generator
Generate placeholder text (Lorem Ipsum) for design mockups and testing.
Text Diff Checker
Text Diff Checker
Compare two blocks of text and highlight the differences line by line.
Remove Duplicate Lines
Remove Duplicate Lines
Remove duplicate lines from text while preserving order or sorting.
Speed Converter
Speed Converter
Convert speed between mph, km/h, m/s, knots, and more.
Length Converter
Length Converter
Convert between meters, kilometers, miles, feet, inches, yards, centimeters, and millimeters instantly.
Weight Converter
Weight Converter
Convert between kilograms, pounds, ounces, grams, stones, and metric tons.
Temperature Converter
Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin instantly.
Stride Length Calculator
Stride Length Calculator
Work out your average stride length from a measured walking distance and step count.
Body Adiposity Index Calculator
Body Adiposity Index Calculator
Estimate body fat percentage from hip circumference and height, without needing a scale.
Body Frame Size Calculator
Body Frame Size Calculator
Determine whether you have a small, medium, or large body frame from your height-to-wrist ratio.
Fat-Free Mass Index Calculator
Fat-Free Mass Index Calculator
Calculate fat-free mass index (FFMI) from height, weight, and body fat percentage.
Ponderal Index Calculator
Ponderal Index Calculator
Calculate the Ponderal Index, an alternative to BMI that divides weight by height cubed instead of squared.
Relative Fat Mass Calculator
Relative Fat Mass Calculator
Estimate body fat percentage from height and waist circumference using the Relative Fat Mass (RFM) method.
Waist-to-Hip Ratio Calculator
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio, a measure the WHO uses to assess health risk related to fat distribution.
Waist-to-Height Ratio Calculator
Waist-to-Height Ratio Calculator
Calculate your waist-to-height ratio using the "keep your waist below half your height" health guideline.
BEE Calculator (Basal & Total Energy Expenditure)
BEE Calculator (Basal & Total Energy Expenditure)
Calculate basal energy expenditure (BEE) and total energy expenditure adjusted for activity, illness stress, and fever.
Average Percentage Calculator
Average Percentage Calculator
Find the average of a list of percentages.
Beta Function Calculator
Beta Function Calculator
Calculate the Beta function B(m, n) using the Gamma function relationship.
Absolute Value of a List of Numbers
Absolute Value of a List of Numbers
Convert an entire list of numbers to their absolute values at once.
Add a Number to a List Calculator
Add a Number to a List Calculator
Add the same fixed number to every value in a list at once.
Diagonal Matrix Checker
Diagonal Matrix Checker
Check whether a square matrix is diagonal — every entry off the main diagonal equal to zero.
Bidiagonal Matrix Checker
Bidiagonal Matrix Checker
Check whether a square matrix has non-zero entries only on the main diagonal and the diagonal directly above it.
Lower Bidiagonal Matrix Checker
Lower Bidiagonal Matrix Checker
Check whether a square matrix has non-zero entries only on the main diagonal and the diagonal directly below it.
Lower Triangular Matrix Checker
Lower Triangular Matrix Checker
Check whether every entry above the main diagonal of a square matrix is zero.
Lower Hessenberg Matrix Checker
Lower Hessenberg Matrix Checker
Check whether a square matrix has zero entries everywhere beyond the first diagonal above the main diagonal.
Idempotent Matrix Checker
Idempotent Matrix Checker
Check whether a square matrix satisfies A × A = A.
Invertible Matrix Checker
Invertible Matrix Checker
Check whether a square matrix has an inverse by testing if its determinant is non-zero.
Nonsingular Matrix Checker
Nonsingular Matrix Checker
Check whether a square matrix is nonsingular by testing if its determinant is non-zero.
Involutory Matrix Checker
Involutory Matrix Checker
Check whether a square matrix is its own inverse — A × A equals the identity matrix.
Normal Matrix Checker
Normal Matrix Checker
Check whether a square matrix commutes with its own transpose (A·Aᵀ = Aᵀ·A).
Orthogonal Matrix Checker
Orthogonal Matrix Checker
Check whether a square matrix satisfies A·Aᵀ = the identity matrix.
Nilpotent Matrix Checker
Nilpotent Matrix Checker
Check whether repeatedly multiplying a square matrix by itself eventually produces the all-zero matrix.
Positive Definite Matrix Checker
Positive Definite Matrix Checker
Check whether a symmetric matrix is positive definite using Sylvester's criterion.
Negative Definite Matrix Checker
Negative Definite Matrix Checker
Check whether a symmetric matrix is negative definite — the mirror image of positive definite.
Negative Semi-Definite Matrix Checker
Negative Semi-Definite Matrix Checker
Check whether a symmetric matrix is negative semi-definite, a relaxed version of negative definite that allows zero.
Break-Even Calculator
Break-Even Calculator
Find how many units you need to sell before a business covers its fixed costs.
Rule of 72 Calculator
Rule of 72 Calculator
Estimate how many years it takes an investment to double at a given annual growth rate.
CAGR Calculator
CAGR Calculator
Calculate the compound annual growth rate between a beginning and ending value.
APY Calculator
APY Calculator
Convert a nominal interest rate into its Annual Percentage Yield, accounting for compounding frequency.
Net Worth Calculator
Net Worth Calculator
Calculate your net worth by subtracting total liabilities from total assets.
50/30/20 Budget Calculator
50/30/20 Budget Calculator
Split your take-home pay into needs, wants, and savings using the popular 50/30/20 budgeting rule.
FIRE Calculator
FIRE Calculator
Calculate your Financial Independence, Retire Early (FIRE) number and project when you'll reach it.
Emergency Fund Calculator
Emergency Fund Calculator
Find your emergency fund target based on essential monthly expenses and desired months of coverage.
Debt Snowball Calculator
Debt Snowball Calculator
Simulate paying off multiple debts smallest-balance-first, the "debt snowball" method.
Debt Avalanche Calculator
Debt Avalanche Calculator
Simulate paying off multiple debts highest-interest-rate-first, the mathematically optimal "debt avalanche" method.
Debt-to-Income Ratio Calculator
Debt-to-Income Ratio Calculator
Calculate your debt-to-income ratio, a figure lenders use to assess how much of your income already goes to debt.
529 College Savings Calculator
529 College Savings Calculator
Project how a 529 college savings plan grows with regular contributions and compound returns.
403(b) Retirement Calculator
403(b) Retirement Calculator
Project your 403(b) balance at retirement, including any employer match.
NPV Calculator
NPV Calculator
Calculate the Net Present Value of an investment from its initial cost and a series of future cash flows.
Dividend Yield Calculator
Dividend Yield Calculator
Calculate a stock's dividend yield from its annual dividend per share and current price.
Stock Average (Cost Basis) Calculator
Stock Average (Cost Basis) Calculator
Calculate your average cost per share across multiple purchases at different prices.
Stock Split Calculator
Stock Split Calculator
See how many shares you'll hold and what the new price per share will be after a stock split.
Zakat Calculator
Zakat Calculator
Calculate zakat owed at 2.5% of net zakatable wealth, once it meets the nisab threshold.
Business Days Calculator
Business Days Calculator
Count the number of weekdays (Monday through Friday) between two dates.
Countdown Calculator
Countdown Calculator
Count down the days, hours, and minutes remaining until any future date and time.
Leap Year Calculator
Leap Year Calculator
Check whether any given year is a leap year in the Gregorian calendar.
Week Number Calculator
Week Number Calculator
Find the ISO week number for any date.
Unit Price Calculator
Unit Price Calculator
Compare two products by price per unit to find the better deal, regardless of package size.
Fabric Yardage Calculator
Fabric Yardage Calculator
Estimate how many yards of fabric a rectangular sewing project needs, including a waste allowance.
Belt Size Calculator
Belt Size Calculator
Find the right belt size from your waist or pant size using the standard plus-2-inch rule.
Ring Size Converter
Ring Size Converter
Convert a ring's measured circumference or diameter into a US ring size.
Water Intake Calculator
Water Intake Calculator
Estimate a suggested daily water intake based on body weight and activity level.
A Body Shape Index (ABSI) Calculator
A Body Shape Index (ABSI) Calculator
Calculate A Body Shape Index (ABSI), a measure combining waist circumference, BMI, and height.
Standard Drink Calculator
Standard Drink Calculator
Calculate how many US standard drinks are in a given volume and alcohol percentage.
IQ Percentile Calculator
IQ Percentile Calculator
Convert an IQ score into a percentile rank based on the standard normal distribution.
Skinfold Body Fat Calculator (Jackson-Pollock 3-Site)
Skinfold Body Fat Calculator (Jackson-Pollock 3-Site)
Estimate body fat percentage from three skinfold measurements using the Jackson-Pollock formula.
Sleep Debt Calculator
Sleep Debt Calculator
Add up accumulated sleep debt from a series of nights against a target amount of sleep.
Crore to Lakh Calculator
Crore to Lakh Calculator
Convert a value in crore to the equivalent in lakh, using the Indian numbering system.
Crore to Million Calculator
Crore to Million Calculator
Convert a value in crore to the equivalent in million.
Million to Billion Calculator
Million to Billion Calculator
Convert a value in million to the equivalent in billion.
Million to Lakh Calculator
Million to Lakh Calculator
Convert a value in million to the equivalent in lakh.
Million to Thousand Calculator
Million to Thousand Calculator
Convert a value in million to the equivalent in thousand.
Unix Time Converter
Unix Time Converter
Convert a Unix timestamp to a readable date, or a date back into a Unix timestamp.
Military Time Converter
Military Time Converter
Convert between 12-hour clock time and 24-hour military time.
Degrees Minutes Seconds Calculator
Degrees Minutes Seconds Calculator
Convert coordinates or angles between decimal degrees and degrees-minutes-seconds (DMS) format.
Combination Calculator (nCr)
Combination Calculator (nCr)
Calculate the number of ways to choose r items from a set of n, where order doesn't matter.
Permutation Calculator (nPr)
Permutation Calculator (nPr)
Calculate the number of ways to arrange r items from a set of n, where order matters.
Correlation Coefficient Calculator
Correlation Coefficient Calculator
Calculate the Pearson correlation coefficient (r) between two paired data sets.
Covariance Calculator
Covariance Calculator
Calculate the covariance between two paired data sets.
Coefficient of Variation Calculator
Coefficient of Variation Calculator
Calculate the coefficient of variation — standard deviation expressed as a percentage of the mean.
IQR Calculator (Interquartile Range)
IQR Calculator (Interquartile Range)
Calculate the interquartile range — the spread of the middle 50% of a data set.
Quartile Calculator
Quartile Calculator
Find the first, second (median), and third quartiles of a data set.
Margin of Error Calculator
Margin of Error Calculator
Calculate the margin of error for a sample estimate at a chosen confidence level.
T-Test Calculator
T-Test Calculator
Calculate the t-statistic for comparing the means of two independent samples.
Chi-Square Calculator
Chi-Square Calculator
Calculate a chi-square statistic comparing observed values against expected values.
Linear Regression Calculator
Linear Regression Calculator
Find the best-fit straight line (slope and intercept) through a set of x,y data points.
Five Number Summary Calculator
Five Number Summary Calculator
Calculate the five-number summary of a data set: minimum, Q1, median, Q3, and maximum.
Outlier Calculator
Outlier Calculator
Identify statistical outliers in a data set using the standard 1.5×IQR fence method.
Mean Absolute Deviation Calculator
Mean Absolute Deviation Calculator
Calculate the mean absolute deviation — the average distance of each value from the mean.
Coin Flip Probability Calculator
Coin Flip Probability Calculator
Calculate the probability of getting a specific number of heads in a set number of fair coin flips.
Dice Probability Calculator
Dice Probability Calculator
Calculate the probability of rolling a specific total with any number of dice.
Expected Value Calculator
Expected Value Calculator
Calculate the expected value of an uncertain outcome from a list of values and their probabilities.
Odds Calculator
Odds Calculator
Convert between probability and decimal betting odds.
Board Foot Calculator
Board Foot Calculator
Calculate board feet — the standard volume unit lumber is priced and sold by.
Drywall Calculator
Drywall Calculator
Estimate how many drywall sheets you need to cover a wall, based on standard 4×8 ft sheets.
Paint Calculator
Paint Calculator
Estimate how many gallons of paint you need based on wall area, number of coats, and coverage rate.
Flooring Calculator
Flooring Calculator
Estimate how much flooring material you need for a room, including waste and box count.
Lumber Calculator
Lumber Calculator
Calculate the total board feet across a multi-item lumber order.
Rebar Calculator
Rebar Calculator
Estimate the total length of rebar needed for a grid-reinforced concrete slab.
Brick Calculator
Brick Calculator
Estimate how many bricks are needed to build a wall of a given size.
Fence Calculator
Fence Calculator
Calculate how many posts and sections a fence needs for a given total length.
Decking Calculator
Decking Calculator
Estimate the linear footage of decking boards needed to cover a deck area.
Insulation Calculator
Insulation Calculator
Estimate how many insulation batts or rolls are needed to cover an area.
Roof Pitch Calculator
Roof Pitch Calculator
Calculate a roof's pitch angle and slope percentage from its rise and run.
Concrete Block Calculator
Concrete Block Calculator
Estimate how many concrete blocks are needed to build a wall of a given size.
VO2 Max Calculator (Cooper Test)
VO2 Max Calculator (Cooper Test)
Estimate VO2 max — a measure of aerobic fitness — from the distance covered in a 12-minute run.
Heart Rate Zone Calculator
Heart Rate Zone Calculator
Calculate personalized training heart rate zones from your age (and optionally resting heart rate).
Max Heart Rate Calculator
Max Heart Rate Calculator
Estimate maximum heart rate from age, using both the classic and Tanaka formulas.
Steps to Miles Calculator
Steps to Miles Calculator
Convert a step count into an estimated distance in miles, based on your stride length.
Steps to Calories Calculator
Steps to Calories Calculator
Estimate calories burned from a step count, based on body weight.
Cooking Measurement Converter
Cooking Measurement Converter
Convert between common cooking measurement units — cups, tablespoons, teaspoons, fluid ounces, and milliliters.
ABV Calculator (Alcohol By Volume)
ABV Calculator (Alcohol By Volume)
Calculate alcohol by volume for homebrewing from original and final specific gravity readings.
Kinetic Energy Calculator
Kinetic Energy Calculator
Calculate the kinetic energy of a moving object from its mass and velocity.
Potential Energy Calculator
Potential Energy Calculator
Calculate the gravitational potential energy of an object based on its mass and height.
Work Calculator (Physics)
Work Calculator (Physics)
Calculate the work done by a force acting over a distance, at any angle.
Power Calculator (Physics)
Power Calculator (Physics)
Calculate power — the rate at which work is done or energy is transferred — from work and time.
Momentum Calculator
Momentum Calculator
Calculate the momentum of a moving object from its mass and velocity.
Free Fall Calculator
Free Fall Calculator
Calculate the distance fallen and velocity reached after a given time in free fall.
Projectile Motion Calculator
Projectile Motion Calculator
Calculate the range, maximum height, and flight time of a projectile launched at an angle.
Pressure Calculator
Pressure Calculator
Calculate pressure from force and the area it's applied over.
Ideal Gas Law Calculator
Ideal Gas Law Calculator
Solve for pressure, volume, moles, or temperature using the ideal gas law (PV = nRT).
Boyle's Law Calculator
Boyle's Law Calculator
Solve for the missing pressure or volume value using Boyle's Law, at constant temperature.
pH Calculator
pH Calculator
Convert between pH and hydrogen ion concentration.