Free Online Percentage Calculator

Instant, accurate, and easy-to-use percentage calculations

X% of Y
X is what % of Y
Percentage change
10% of 100 = 10
GST Calculator Profit/Loss Calculator

How It Works

Our percentage calculator offers three different calculation types:

  • X% of Y: Calculate a percentage of a number (e.g., 15% of 80)
  • X is what % of Y: Find what percentage one number is of another (e.g., 10 is what percent of 50)
  • Percentage change: Calculate the percentage increase or decrease between two numbers