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Binary & Hex Speedrun

Convert between decimal, binary and hexadecimal as fast as you can. Score depends on speed and accuracy. A fun way to practice number base conversions for developers.

Medium 2 min Programming
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Convert binary to decimal โ€” fast

Score: Correct:

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Aug 09

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About Binary & Hex Speedrun

Convert between decimal, binary and hexadecimal as fast as you can. Score depends on speed and accuracy. A fun way to practice number base conversions for developers.

This free tool is designed to be quick, fun, and effective. It runs entirely in your browser, so your data never leaves your device and no account is required. Play once or come back daily to track your progress and improve your score.

Binary & Hex Speedrun - Frequently Asked Questions

Bit manipulation, memory layout, network masks and debugging all require quick mental conversion between decimal, binary and hexadecimal. Speed comes from daily practice.
Memorize the powers of two (1, 2, 4, 8, 16, 32, 64, 128) and add the values where a 1 appears. For hex, group binary digits by fours.
Every correct answer earns points scaled by how fast you answer. A streak bonus rewards consecutive correct answers. Finish with the highest score you can in one minute.
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