Percentage calculator.
Find a percentage, compare two values, or calculate the change between them directly in your browser.
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Helpful guide
Percentages without the guesswork
Use the calculator for common percentage questions: finding a percentage of a number, checking what percentage one value is of another, or measuring the change between two values.
How to use it
01
Choose the percentage calculation you need.
02
Enter the values in the two input fields.
03
Read the answer instantly as you change the numbers.
Frequently asked questions
Is this percentage calculator free?
Yes. It runs in your browser and does not require an account.
How do I find a percentage of a number?
Choose What is X% of Y, enter the percentage and number, and the answer will update instantly.
How is percentage change calculated?
Percentage change is calculated as (new value − original value) ÷ absolute original value × 100.