How do I calculate a percentage of a number?

Enter the percentage and the number in the "What is X% of Y?" section. The result updates instantly as you type.

How do I find the percentage change between two numbers?

Use the "Percentage change from X to Y" mode. Enter the original and new values to see the increase or decrease as a percentage.

No. All calculations run entirely in your browser using JavaScript. Nothing is sent to a server.

Three common percentage calculations in one place. Results update instantly as you type.

What is X% of Y?

What is% of?

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