Percentage Calculator

Calculate percentages quickly and easily

What is X% of Y?

Result:

0

X is what % of Y?

Result:

0%

Percentage Increase/Decrease

Percentage Change:

0%

About Percentage Calculator

A percentage calculator is a useful tool that helps you quickly calculate percentages for various everyday situations. Whether you're calculating discounts while shopping, figuring out tips at restaurants, or analyzing data for work or school, our percentage calculator makes it simple and fast.

What is a Percentage?

A percentage is a way of expressing a number as a fraction of 100. The word "percent" comes from the Latin "per centum," which means "by the hundred." Percentages are denoted using the percent sign (%). For example, 50% means 50 out of 100, or half.

How to Calculate Percentages

There are several common percentage calculations:

Finding X% of Y: Multiply the percentage (as a decimal) by the value. For example, 20% of 100 = 0.20 × 100 = 20
Finding what % X is of Y: Divide X by Y and multiply by 100. For example, 25 is what % of 200? → (25 ÷ 200) × 100 = 12.5%
Percentage Increase/Decrease: Calculate the difference, divide by the original value, and multiply by 100. For example, increase from 100 to 150 → ((150-100) ÷ 100) × 100 = 50% increase

Common Uses of Percentage Calculations

Percentages are used in many real-world situations:

  • Calculating discounts and sales prices when shopping
  • Figuring out tips at restaurants
  • Understanding interest rates on loans and savings
  • Analyzing test scores and grades
  • Calculating tax amounts
  • Measuring percentage changes in data and statistics
  • Determining profit margins in business

Why Use Our Percentage Calculator?

Our percentage calculator is designed to be fast, accurate, and easy to use. You don't need to remember formulas or do manual calculations. Simply enter your numbers and get instant results. The calculator works on all devices, including smartphones and tablets, so you can calculate percentages anywhere, anytime.