Percentage Calculator

✔ Reviewed by the 67858.com editorial teamUpdated October 27, 2026Methodology

X% of Y, what percent A is of B, and the reverse.

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Quick answer: Three of the most-searched percentage questions answered at once — no mode switching.

How to use the Percentage Calculator

Enter your figures in the fields above — results update instantly as you type.
Choose your currency symbol (the maths is the same in any currency).
Use Share result to save a link that reloads your exact inputs, or Print for your records.
Compare scenarios by changing one input at a time and noting how the main result moves.

Formula

X% of Y = X ÷ 100 × Y A as % of B = A ÷ B × 100

Worked example

15% of 240 is 36; 36 is 15% of 240; and 240 is 15% of 1,600.

Frequently asked questions

Percent vs percentage points?

Going from 10% to 12% is a 2 percentage-point rise but a 20% relative increase.

Shortcut for 10%?

Move the decimal one place left: 10% of 240 is 24.

Assumptions & limits

Results are estimates based on the inputs you provide and the formula shown, rounded for display. They do not account for every fee, tax rule or market condition. This tool is educational and is not financial, tax or legal advice — confirm important decisions with a qualified professional.

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