Number Base Converter
Binary, octal, hexadecimal and base 5.
About Number Base Converter
Convert numbers between decimal and other bases: binary, base 3, base 5, octal and hexadecimal. Useful practice for computer science students and programmers working with hex colours and memory addresses.
How to play Number Base Converter
- Convert numbers between bases.
- Choose a mode: Classic (10 timed questions), Speed run (60 seconds), Survival (three lives) or Daily (the same questions for everyone today).
- Tap an answer or press 1–4. Faster correct answers score more, and three in a row adds a streak bonus.
- Review every answer at the end, and share your daily result without spoilers.
Number Base Converter FAQ
Is there a daily Number Base Converter challenge?
Yes. Daily mode gives everyone the same questions each day, resetting at your local midnight, with a shareable result grid.
Is Number Base Converter free to play?
Yes. Number Base Converter is free in your browser on OFF PLAY, with nothing to download or install.
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