Percentage Calculator

Fast, free, accurate and 100% private. Works on any device.

Percentage Calculator

Enter your values below and click the button for instant results.

Percentage

Calculate

Value A

Value B / Percent

Result

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About Percentage Calculator

This Percentage Calculator is fast, accurate and 100% private. All calculations run locally in your browser, so your information never leaves your device. No sign-up, no downloads, works beautifully on mobile and desktop.

FAQ

What is the formula for percentage change?▶

Percentage change = (B - A) / A * 100. A positive result means an increase, negative means a decrease.

How do I find what percent A is of B?▶

Divide A by B and multiply by 100. For example 25 is 25% of 100.