Percentage Calculator

Calculate percentages, ratios, and proportional values with our easy-to-use percentage calculator.

Basic Percentage Calculator

Percentage = (Part / Whole) × 100

How to Use

Basic Percentage

Calculate what percentage one number is of another.

Percentage Increase

Find the percentage increase from one value to another.

Percentage Decrease

Calculate the percentage decrease between two values.

Ratio to Percentage

Convert ratios to percentages for easy comparison.

Common Examples

  • Test scores: 85 out of 100 = 85%
  • Sales tax: $8.50 on $100 = 8.5%
  • Discount: $20 off $100 = 20%
  • Population growth: 1,100 to 1,200 = 9.09%
  • Price increase: $50 to $60 = 20%
  • Attendance: 80 out of 120 = 66.67%