Percentage Calculator
What is X% of Y?
% of
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X is what % of Y?
is what % of
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% Change from X to Y
From to
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When to Use This Tool
Shopping discounts
Instantly calculate how much you save on a 30% off sale, or compare discounts across stores before buying.
Investment returns
Calculate percentage gain or loss on stocks, crypto, or property. See if a 12% annual return beats your current savings rate.
Grade calculations
Work out your overall grade percentage from test scores, or see how much a final exam can affect your course grade.
Business metrics
Calculate conversion rates, profit margins, year-over-year growth, and other KPIs that are always expressed as percentages.
How to use Percentage Calculator
1
Navigate to the Percentage Calculator tool above and enter or upload your input data.
2
Configure any available options or settings to match your needs.
3
Click the action button to process your input. Results appear instantly.
4
Copy or download the result. All processing happens in your browser — no data is sent anywhere.
Frequently Asked Questions
Is the Percentage Calculator free to use? ▼
Yes, Percentage Calculator is completely free. No signup, no account, and no payment required. It will always be free.
Does Percentage Calculator work on mobile? ▼
Yes, this tool is fully responsive and works on all devices — mobile, tablet, and desktop. It runs entirely in your browser.
Is my data safe when using Percentage Calculator? ▼
Absolutely. All processing happens in your browser. Your data is never sent to any server and is not stored or logged anywhere.
Do I need to install anything? ▼
No installation required. Percentage Calculator works directly in your browser — just visit the page and start using it instantly.