All calculators & tools
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$ Finance & Money 14
Mortgages, loans, savings, investing and business math.
Mortgage Calculator Popular
Estimate your monthly mortgage payment including taxes, insurance and HOA.
$Loan & EMI Calculator Popular
Calculate the equated monthly instalment (EMI), total interest and total cost of any loan.
$Compound Interest Calculator Popular
See how your money grows with compound interest and regular monthly contributions.
$Savings Goal Calculator
Find out how much to save each month to reach any savings goal on time.
$Retirement Calculator Popular
Project your retirement nest egg and see if you're on track for the income you want.
$Credit Card Payoff Calculator
Find out how long it will take to pay off a credit card and how much interest you'll pay.
$ROI Calculator
Calculate return on investment and annualized return (CAGR) for any investment.
$Inflation Calculator
See how inflation erodes purchasing power over time.
$Salary to Hourly Calculator
Convert between annual salary, monthly, weekly, daily and hourly pay.
$Tip & Split Calculator
Work out the tip and split the bill between any number of people.
$Discount Calculator
Calculate sale prices, stacked discounts and how much you save.
$Sales Tax / VAT / GST Calculator
Add or remove sales tax, VAT or GST from any price.
$Profit Margin Calculator
Calculate gross margin, markup and profit per unit.
$Break-Even Calculator
Find how many units you must sell to cover fixed costs.
∑ Math & Algebra 9
Percentages, equations, fractions, statistics and more.
Percentage Calculator Popular
Five percentage calculators in one: percent of, what percent, percent change, increase and decrease.
∑Scientific Calculator Popular
A free online scientific calculator with trig, logs, powers, roots and factorials.
∑Quadratic Equation Solver
Solve ax² + bx + c = 0 with real or complex roots, discriminant and vertex.
∑GCD & LCM Calculator
Find the greatest common divisor and least common multiple of two or more numbers.
∑Prime Factorization Calculator
Break any whole number into its prime factors and check if it's prime.
∑Statistics Calculator
Mean, median, mode, range, variance and standard deviation for any data set.
∑Fraction Calculator
Add, subtract, multiply and divide fractions and mixed numbers — simplified automatically.
∑Exponent & Logarithm Calculator
Compute powers, roots and logarithms in any base.
∑Ratio & Proportion Calculator
Solve proportions A : B = C : X and simplify ratios.
♥ Health & Fitness 4
BMI, calories, ideal weight and hydration.
BMI Calculator Popular
Calculate Body Mass Index in metric or imperial units, with healthy weight range.
♥Calorie Calculator (TDEE)
Estimate your daily calories for maintenance, weight loss or gain.
♥Ideal Weight Calculator
Compare ideal body weight from four classic formulas.
♥Water Intake Calculator
Estimate how much water to drink each day.
⏱ Date & Time 4
Ages, date differences, deadlines and durations.
Age Calculator Popular
Calculate your exact age in years, months, days — and days until your next birthday.
⏱Date Difference Calculator
Count days, weeks and business days between two dates.
⏱Add or Subtract Days Calculator
Find the date that is N calendar or business days from any date.
⏱Time Duration Calculator
Calculate hours and minutes between two times, minus breaks.
⇄ Converters 3
Units, number bases and Roman numerals.
⚄ Random & Games 3
Secure random numbers, dice, coins and passwords.
Random Number Generator Popular
Generate cryptographically secure random numbers in any range — unique or with repeats.
⚄Dice Roller & Coin Flip
Roll d4, d6, d8, d10, d12, d20 dice or flip coins online.
⚄Password Generator
Create strong random passwords and PINs — generated locally, never sent anywhere.
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