Percentage Calculator

Calculate percentages, percentage change, and difference

percentagepercentratio

📖 How to Use

Select a calculation mode (percentage, percentage change, etc.)
Enter the values
Click Calculate to get the result

📐 Formula

What % is X of Y = (X/Y)×100%
X% of Y = X/100 × Y
Percentage change = (new−old)/|old| × 100%

❓ FAQ

How do I calculate a discount?▾

Use the "X% of Y" mode, where X is the discount percentage and Y is the original price.

How do I calculate percentage increase or decrease?▾

Use the "Percentage Change" mode. Enter the original and new values to get the change.

🔗 Related Calculators

Fraction Calculator

Add, subtract, multiply, and divide fractions

📐

Trigonometry Calculator

sin, cos, tan and other trig functions

🏷️

Discount Calculator

Calculate discounted price and savings

📐

Slope Calculator

Calculate slope and line equation from two points

About Percentage Calculator

This tool is completely free, no registration required. Works directly in your browser. Supports both PC and mobile devices.

Percentage Calculator is a free online tool that works on both PC and mobile. No registration or download required — just open in your browser. Results are accurate and reliable for everyday use and professional reference.