Number base converter
Type a number in binary, octal, decimal, hexadecimal or any base from 2 to 36 and see it in all the others at once. Numbers of any size, negative numbers too.
Runs in your browser. Your files are never uploaded or stored.
Something not working, or missing an option?
How to use Number base converter
- Type a number in any of the fields.
- Read it in every other base, or pick a base for the last field.
- Copy the one you need.
Questions
Can I paste 0x or 0b numbers?
Yes. The 0x, 0o and 0b prefixes, spaces and underscores are all accepted.
Are my files uploaded?
No. The tool runs inside your browser, and the page is blocked from sending data anywhere. You can check by turning off your internet connection: it keeps working.
Open-source parts
This tool uses only features built into your browser: no third-party code.