Percentage Calculator

Calculate what percent one number is of another, find a percentage of a value, and work out percentage increases or decreases.

Percentage (%)

Of value

Result

Value (X)

Total (Y)

Result

20%

From

Change

+25%

Frequently asked questions

How do I calculate a percentage of a number?

Multiply the number by the percentage and divide by 100. For example, 20% of 150 is 150 × 20 ÷ 100 = 30.

Calculate your exact age in years, months and days.

Find the difference between two dates, or add/subtract days.

Calculate your Body Mass Index in metric or imperial.

Estimate monthly payments and total interest on a loan.