About this tool

The Percentage Calculator handles three common percentage problems: finding what percent one number is of another, calculating a percentage of a total, and working out percentage change between two values. It is built for students, small business owners, and anyone who needs quick, accurate percent math without pulling out a spreadsheet or second-guessing their arithmetic.

Reach for this tool when you need to figure out a tip, a discount, a tax amount, a grade, or how much something has gone up or down in price. If you find yourself writing out a fraction and staring at it, this is the faster path.

How to use it

1. Choose the type of percentage calculation you need from the available options.
2. Enter your first number into the corresponding input field.
3. Enter your second number or the percentage value where prompted.
4. Click Calculate to see your result displayed instantly below the inputs.
5. Review the answer and copy it or use the reset button to start a new calculation.

Pro tips

• For percentage change, always enter the original value first and the new value second to get the correct increase or decrease direction.
• You can chain calculations by using a previous result as the input for your next percentage problem without clearing the page.

FAQ

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