Percentage Calculator

Calculate percentages, find what percent one number is of another, and compute percentage change.

What is X% of Y?
What is % of ?
Answer 50
X is what % of Y?
is what % of ?
Answer 25%
Percentage Change
From to
Change +50%
X% of what is Y?
% of what is ?
Answer 250

How to Use

  1. Choose the type of percentage calculation you need
  2. Enter your numbers in the input fields
  3. Results update instantly as you type
  4. All four calculators work independently

Percentage Formulas

X% of Y = (X / 100) × Y
X is what % of Y = (X / Y) × 100
% Change = ((New − Old) / Old) × 100
X% of what is Y = Y / (X / 100)
Percentages are used everywhere: discounts, taxes, tips, statistics, grades, and finance.