Base Converter
Convert numbers between Binary, Hex, etc.
Decimal
10
Binary
1010
Hex
a
Octal
12
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Works well with
Related tools
How to use
How to use Base Converter
Jump between binary, decimal, hex, and octal without reaching for a terminal.
- 01
Enter a number in any supported base.
- 02
See conversions update across all bases instantly.
- 03
Copy the representation you need for code or homework.
Common questions
What happens if I enter invalid digits?
Each base only accepts valid digits for that base — invalid input is flagged so you can correct it.
Large numbers supported?
JavaScript number limits apply. Extremely large integers may lose precision.
Useful for debugging?
Developers often use it when reading memory addresses, color channels, or bitmask values.
Runs in your browser · Your input is never uploaded · Free with no account