Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal in one place.
Programmers constantly move numbers between bases — binary for bits, hexadecimal for colours and memory, decimal for humans, octal for permissions. Number Base Converter translates a value between binary, octal, decimal and hexadecimal in one place.
How to use number base converter
- 1. Enter a number and its base.
- 2. See it in binary, octal, decimal and hexadecimal.
- 3. Copy the representation you need.
When to use Number Base Converter
Read a hex or binary value
Convert a hex colour or binary flag into decimal to understand it.
Work with permissions
Move between octal and other bases when dealing with file permissions.
Learning and debugging
See a number across bases while studying or troubleshooting.
Frequently asked questions
Which bases are supported?
Binary (base 2), octal (base 8), decimal (base 10) and hexadecimal (base 16).
Can I convert from any base to any base?
Yes — enter your number in its base and read it in all the others.
Is my input uploaded?
No — conversion runs in your browser.