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Percentage Calculator

Your inputs

Result = value × percentage / 100 for the first question; the second divides the part by the whole and multiplies by 100, and the third divides the part by the percentage.

Live results

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Result visualization

Answer all three classic percentage questions — find a percentage of a value, find what percentage one value is of another, or find the whole from a part and its percentage — with worked steps for each, calculated live as you type. Free, instant, no signup.

100% free · No sign-up · No daily limits · No watermarks · Processed in your browser — files never leave your device

UNDERSTAND YOUR RESULTS

Percentage Calculator guide

Answer all three classic percentage questions — find a percentage of a value, find what percentage one value is of another, or find the whole from a part and its percentage — with worked steps for each, calculated live as you type. Free, instant, no signup.

📖 From the blog: How to calculate a percentage — the three questions everyone asks

How to use this tool

  1. Enter Percentage, Value, Whole value (Y), Question.
  2. Change a value to update the results and illustration. Check any validation message before using the output.
  3. Copy the results or download CSV. Reset restores the example values.

A worked example

25% of 200 is 50, and the remaining 75% is 150. The same tool answers the other two classic questions: 25 is 12.5% of 200, and 50 is 25% of 200.

What you can do with this tool

How it works

Result = value × percentage / 100 for the first question; the second divides the part by the whole and multiplies by 100, and the third divides the part by the percentage.

Frequently asked questions

How should I interpret the illustration?

It is a visual aid, not a replacement for the numeric output. Some charts compare values with different units, and those magnitudes are not directly comparable.

Can I use the result without checking the inputs?

Check units, signs, assumptions and rounding first. The tool cannot know whether the values you enter describe the real situation correctly.