Binary, octal, decimal and hexadecimal — the four bases most used in computing.
Yes. Number Base Converter is completely free with no sign-up, no watermarks and no usage limits.
No. Number Base Converter runs entirely in your browser, so your data never leaves your device.
Only your device's available memory — there are no server-side limits because nothing is uploaded.
Convert a number between binary, octal, decimal and hexadecimal, in your browser.