Number Base Converter Privacy: All processing runs locally
Convert numbers between any base from 2 to 36. Enter custom source and target bases.
Valid digits: 0-9
Valid digits: 0-9, A-F
How It Works
The Number Base Converter supports conversion between any number base from 2 (binary) to 36 (using digits 0-9 and letters A-Z). This is the most flexible number system converter available.
Common bases:
- Base 2 (Binary) — digits 0-1, used by computers
- Base 8 (Octal) — digits 0-7, used in Unix permissions
- Base 10 (Decimal) — digits 0-9, everyday counting
- Base 16 (Hexadecimal) — digits 0-9 and A-F, used in programming
- Base 36 — digits 0-9 and A-Z, maximum supported base
For bases above 10, letters A through Z represent values 10 through 35. Input is case-insensitive. The conversion first parses the input number in the source base to an intermediate decimal value, then converts that value to the target base. All processing happens locally in your browser.