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Percentage Quiz
Random percentage problems — find X% of Y, percentage change, and more. 60-second timer. Tracks correct count and accuracy. Best score saved locally.
100% Private & Secure
This tool runs in your browser.
Your data is never uploaded or stored.
Percentage Quiz
Quick-fire percentage challenges in 60 seconds.
Three types: "What is X% of Y?", "N increased by X%", and "A is what % of B?". +10 points per correct answer.
How to use
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Click Start to begin.
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Solve percentage problems as fast as you can.
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See your score after 60 seconds.
Why use this tool?
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Fast, instant results — no waiting, no page reloads.
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Clean, focused interface designed for developers.
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100% private — everything runs in your browser, nothing is uploaded to any server.
Frequently Asked Questions
What types of problems are asked?
Find X% of Y, X increased by Y%, and percentage change.
Is there a tolerance for answers?
Answers must be exact (whole numbers or one decimal place).