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Free Calculators & Converters

Quick, accurate calculators for everyday questions: how old am I, what is 15% of a price, how much is my loan EMI, how many days between two dates, and how many centimetres in an inch.

Age Calculator

Exact age in years, months and days, plus next birthday.

Percentage Calculator

X% of Y, percentage change, increase and decrease.

BMI Calculator

Body Mass Index in metric or imperial units.

Unit Converter

Length, weight, temperature, area, volume, speed & more.

Date Difference Calculator

Days between dates, business days, add or subtract time.

Loan EMI Calculator

Monthly EMI, total interest and amortization schedule.

Random Number Generator

Random integers or decimals in a range, dice and coin flips.

Discount Calculator

Sale price, savings, stacked discounts and sales tax.

All calculators & converters at a glance

ToolWhat it does
Age CalculatorCalculate your exact age in years, months and days from your date of birth. See total days, weeks and hours lived, the weekday you were born and your next birthday.
Percentage CalculatorFree percentage calculator: find X% of a number, what percent one number is of another, the percentage change between two values, or add and subtract a percent.
BMI CalculatorCalculate your Body Mass Index in metric (kg, cm) or imperial (lb, ft, in) units. See your WHO weight category and the healthy weight range for your height.
Unit ConverterConvert units of length, weight, temperature, area, volume, speed, time, data storage, pressure and energy. Precise factors, formulas and quick reference tables.
Date Difference CalculatorCount the days, weeks, months and years between two dates, including business days without weekends. Add or subtract days, weeks, months or years from any date.
Loan EMI CalculatorCalculate the monthly EMI for a home, car or personal loan. See total interest, total payment and a full year-by-year and month-by-month amortization schedule.
Random Number GeneratorGenerate random numbers between any minimum and maximum, with unique (no repeats) and sorted options, decimals, and quick dice roll and coin flip buttons.
Discount CalculatorWork out the sale price and how much you save after a percentage discount, with optional extra stacked discount and sales tax. Reverse mode finds the original price.
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