Number Base Converter Online (Binary, Octal, Decimal, Hex)
Runs 100% in your browser — your files never leave your device.
Bitmasks, color channels, memory addresses, permission flags — the daily traffic between decimal and hex. Type a number, pick the source and target bases, and get the conversion instantly, computed with arbitrary precision so values past 2⁵³ stay exact. Swap the direction with one click.
How it works
- 1
Type a number
Digits valid for the source base — hex letters in either case.
- 2
Pick the bases
Binary, octal, decimal, hexadecimal — swap direction any time.
- 3
Copy the result
The converted value appears live; one click copies it.
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