Percentage Calculator

Three common percentage calculations in one tool

What is % of ?
is what % of ?
From to

About This Tool

Calculate percentages quickly for discounts, tips, grades, and more. Find what percent one number is of another, calculate percentage increase or decrease, and solve any percentage problem.

How to Use

  1. Choose the type of percentage calculation you need.
  2. Enter your numbers in the input fields.
  3. Get your answer instantly.

Frequently Asked Questions

How do I calculate what percentage one number is of another?

Divide the part by the whole, then multiply by 100. For example, 25 out of 200 is (25/200) x 100 = 12.5%. This tool does it for you.

How do I calculate percentage increase?

Subtract the old value from the new value, divide by the old value, multiply by 100. Example: from 50 to 75 is a 50% increase.