Calculators

Fast, accurate calculators for everyday math, money, and dates.

Calculate exact age in years, months, and days from a date of birth.

Calculate the average, sum, and count of a list of numbers instantly.

Calculate your Body Mass Index from height and weight, in metric or imperial units.

Calculate the difference between two dates, or add/subtract days from a date.

Calculate a sale price and total savings from a percentage discount instantly.

Add, subtract, multiply, or divide fractions and see the simplified result instantly.

Calculate percentages, percentage of a number, and percentage change instantly.

Calculate the percentage decrease and decrease amount between two values.

Calculate the percentage increase and increase amount between two values.

Simplify ratios, find a missing ratio value, and compare two ratios instantly.

Add or subtract time, or calculate the duration between two times, instantly.