すべてのツール
コンバーター
Percentage Calculator
Calculate percentages easily: find X% of Y, what percent X is of Y, or percentage change.
About Percentage Calculator
A percentage calculator performs three common percentage operations: finding what X percent of Y is, determining what percentage X is of Y, and calculating the percentage change between two values. These calculations are fundamental in finance, statistics, shopping discounts, grade calculations, and everyday math.
How to Use
Select one of the three calculation modes. Enter the required values in the input fields. The result calculates instantly as you type. Copy the result with one click. Switch between modes to perform different percentage operations.
Common Use Cases
- •Calculating shopping discounts (e.g., 30% off $80)
- •Determining grade percentages (e.g., 45 out of 60)
- •Computing percentage change in stock prices or sales
- •Calculating tax amounts on purchases
- •Finding tip amounts at restaurants