Percentage Calculator
Three common percentage calculations — instant & private.
See how it works
Watch a quick simulation of this tool in action — no file needed.
How to use Percentage Calculator
Follow these steps — everything happens instantly in your browser.
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Step 1. Pick a mode: “X% of Y”, “X is what % of Y”, or “% change”.
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Step 2. Type your two numbers into the input fields.
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Step 3. Read the result instantly — no buttons to press.
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Step 4. Use Copy to send the answer to your clipboard.
Why use this tool
Frequently asked questions
Everything you might want to know about percentage calculator.
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