Home
About
FAQ
Articles
Contact
Home
About
FAQ
Articles
Contact
All calculators A–Z
The complete list of 183 calculators. Filter to narrow it down, or jump to a letter.
183 calculators
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
#
A
Age Calculator
Everyday — Calculate your exact age in years, months, and days from your date of birth, plus countdown to your next birthday.
Area Calculator
Home & Garden — Calculate the area of common shapes: rectangle, circle, triangle, and more.
Aspect Ratio Calculator
Everyday — Calculate and simplify aspect ratios for screens, images, and video content.
Auto Loan Calculator
Finance — Calculate monthly car payments, total interest, and loan costs.
B
BMI Calculator
Health & Fitness — Calculate your Body Mass Index and see where you fall on the health scale.
BMR Calculator
Health & Fitness — Calculate your Basal Metabolic Rate — the calories your body burns at rest.
Body Fat Percentage Calculator
Health & Fitness — Estimate your body fat percentage using the US Navy method.
Break-Even Calculator
Business & Operations — Determine how many units you need to sell to cover your costs.
C
Calorie Calculator
Health & Fitness — Determine your daily calorie needs based on your goals and activity level.
Calories Burned Calculator
Health & Fitness — Estimate calories burned during various exercises and activities.
Compound Interest Calculator
Finance — See how your money grows with compound interest over time.
Concrete Volume Calculator
Trade & Construction — Calculate how much concrete you need for your project in cubic yards.
Credit Card Payoff Calculator
Finance — See how long it takes to pay off credit card debt and total interest costs.
D
Data Storage Converter
Math & Conversion — Convert between bytes, KB, MB, GB, TB, and PB.
Date Calculator
Everyday — Calculate days between two dates, add/subtract days, and find business days.
Days Until Calculator
Everyday — Calculate how many days, weeks, and months until any future date — or since any past date. Perfect for countdowns to events, deadlines, and milestones.
Discount Calculator
Everyday — Calculate sale prices, savings, and effective discounts.
E
Energy Calculator
Science — Calculate kinetic energy, potential energy, or work done.
F
Fraction Calculator
Math & Conversion — Add, subtract, multiply, and divide fractions with step-by-step solutions.
G
Gear Ratio Calculator
Trade & Construction — Calculate gear ratios, output speed, and torque for gear systems.
GST Calculator
Business & Operations — Add GST to a price or extract GST from a GST-inclusive amount. Works for Australia (10%), NZ, UK, EU, Canada, and any custom rate.
H
HVAC BTU Calculator
Trade & Construction — Calculate the BTU capacity needed to heat or cool a room.
I
Ideal Weight Calculator
Health & Fitness — Calculate your ideal body weight using multiple formulas.
Investment Return Calculator
Finance — Calculate the return on your investment including dividends and capital gains.
L
Length Converter
Math & Conversion — Convert between inches, feet, yards, miles, centimeters, meters, and kilometers.
Loan Repayment Calculator
Finance — Calculate monthly payments, total interest, and amortization for any loan type.
M
Markup Calculator
Business & Operations — Calculate selling price from cost and desired markup percentage.
Mean, Median, Mode Calculator
Math & Conversion — Calculate central tendency measures for any data set.
Mortgage Calculator
Finance — Estimate your monthly mortgage payment including principal, interest, taxes, and insurance.
N
Number Base Converter
Tech & IT — Convert numbers between decimal, binary, hexadecimal, and octal simultaneously. Essential for programming, computer science, and digital electronics students.
O
Ohm's Law Calculator
Science — Calculate voltage, current, resistance, and power in electrical circuits.
One Rep Max Calculator
Health & Fitness — Estimate your one-rep max based on weight and reps performed.
P
Password Generator
Everyday — Generate random passwords with customizable length and character sets.
Percentage Calculator
Everyday — Calculate percentages, percentage changes, and percentage of a number.
Percentage Change Calculator
Everyday — Calculate the percentage change between two values to measure increases or decreases.
Power Bill Calculator
Everyday — Calculate your electricity cost by appliance — enter wattage and daily usage to see monthly and annual power bill costs at your electricity rate.
Probability Calculator
Statistics — Calculate the probability of events, combinations, and permutations.
Profit Margin Calculator
Business & Operations — Calculate gross profit margin, net profit margin, and markup percentage.
Pythagorean Theorem Calculator
Math & Conversion — Find the missing side of a right triangle using the Pythagorean theorem.
Q
Quadratic Equation Solver
Math & Conversion — Solve any quadratic equation ax² + bx + c = 0 with real or complex roots.
R
Random Number Generator
Everyday — Generate random numbers within a specified range for games, decisions, or sampling.
Recipe Scaler
Cooking & Kitchen — Scale recipe ingredients up or down for any number of servings.
Rent Affordability Calculator
Everyday — Calculate how much rent you can afford based on your income, the 30% rule, and monthly expenses. Also shows bond and move-in costs.
Retirement Calculator
Finance — Estimate how much you need to save for a comfortable retirement.
ROI Calculator
Business & Operations — Calculate Return on Investment for any business decision or investment.
Roman Numeral Converter
Math & Conversion — Convert between Roman numerals and regular numbers instantly. Converts both directions — numbers to Roman numerals and Roman numerals to numbers.
Running Pace Calculator
Health & Fitness — Calculate pace, finish time, or distance for running.
S
Sample Size Calculator
Statistics — Determine the right sample size for surveys and statistical studies.
Savings Goal Calculator
Finance — Figure out how much to save monthly to reach your financial goal.
Screen PPI Calculator
Everyday — Calculate screen pixel density (PPI) to compare display sharpness and quality.
Shoe Size Converter
Everyday — Convert shoe sizes between US Men's, US Women's, UK, and EU sizing systems.
Simple Interest Calculator
Finance — Calculate interest earned on a fixed principal without compounding.
Speed Distance Time Calculator
Science — Calculate speed, distance, or time given the other two values.
Standard Deviation Calculator
Statistics — Calculate mean, variance, and standard deviation for a data set.
T
Temperature Converter
Math & Conversion — Convert between Fahrenheit, Celsius, and Kelvin temperature scales.
Tip Calculator
Everyday — Calculate tip amounts and split bills between multiple people.
Typing Speed Calculator
Everyday — Calculate your typing speed in WPM, adjusted WPM, accuracy, and characters per minute.
W
Water Intake Calculator
Health & Fitness — Calculate your recommended daily water intake based on weight and activity.
Weight Converter
Math & Conversion — Convert between ounces, pounds, kilograms, grams, and more.
Z
Z-Score Calculator
Statistics — Calculate the Z-score and understand standard normal distribution position.
Show 60 more (123 left)
