Numbers & units / binary-converter
Number bases
Decimal, binary, hexadecimal, and octal — all four, live as you type. Edit any field and the others follow.
inputs
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10
2
16
8
converted
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How it works
Edit any field; the rest update via parseInt(value, base) + value.toString(base). Invalid characters are filtered as you type.
Privacy
Everything runs locally in your browser. Your numbers never leave the page.
Tips
- Hex accepts upper and lower case (auto-uppercased).
- Octal is restricted to 0–7.
- Click any value to copy it.