Percentage Calculator - Calculate Percentages Online Free

Free online percentage calculator. Calculate percentages, find what percent one number is of another, and compute percentage changes instantly.

How to Use the Percentage Calculator

Choose a calculation type — 3 common scenarios
Enter your numbers
Get instant results — with formula shown

All calculations are done in your browser. Nothing is sent to any server.

Features

What is X% of Y? — find the percentage of a number
X is what % of Y? — find the percentage relationship
What is the % change? — calculate increase or decrease
Instant results — updates as you type
Copy results — one-click to clipboard