Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal bases client-side instantly.
Frequently Asked Questions
Is this base converter free to use?
Yes, the base converter is completely free with no login or usage limits.
Does it work offline?
Yes. Conversions happen entirely in your browser using JavaScript's built-in number parsing — nothing is sent to a server.
Which number bases are supported?
You can convert between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Editing any one field instantly updates the other three.
What happens if I type an invalid value for a base?
Characters that aren't valid for the selected base (like '2' in binary) are simply ignored during parsing, so the other fields won't update until you enter a valid value.