Percentage Calculator

Calculate percentages instantly. Find percentages, percentage increase or decrease, and add or subtract percentages with our free online calculator.

1. What is X% of Y?

2. X is What Percent of Y?

3. Percentage Increase / Decrease

4. Add or Subtract Percentage

About This Percentage Calculator

This free online Percentage Calculator helps you solve common percentage problems quickly and accurately. Whether you need to calculate a discount, determine percentage growth, compare values, or add and subtract percentages, this tool provides instant results.

It is useful for students, business owners, shoppers, investors, and anyone who works with percentages in daily life. The calculator works on all devices, including desktops, tablets, and smartphones.

Common Percentage Formulas

Percentage of a Number: (X × Y) ÷ 100
Percentage Increase: ((New − Original) ÷ Original) × 100
Percentage Decrease: ((Original − New) ÷ Original) × 100