Converters
Number Base
Convert between binary, octal, decimal, and hexadecimal.
Runs entirely in your browser — nothing is uploaded
- Binary (2)
- 11111111
- Octal (8)
- 377
- Decimal (10)
- 255
- Hexadecimal (16)
- FF
- Base 36
- 73
Arbitrary precision — values well beyond 64 bits convert exactly.
Frequently asked questions
Which bases are supported?
Binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16), converted in every direction at once.
Can it handle large numbers?
Yes. Values well beyond the usual 32-bit and 64-bit limits are converted exactly.