The fastest number-base converter for developers
AG Radix is a free developer tool that converts binary, octal, decimal and hex, plus any base from 2 to 36, instantly with no sign-up or install.
Enter a value in one place and it is converted into the four standard bases and your chosen arbitrary base in real time, and each result can be copied with one click. Calculations run on JavaScript BigInt, so even very large integers are handled exactly with no digit limit.
It offers an interactive bit grid that is handy for embedded and low-level work. Pick an 8/16/32/64-bit width and click individual bits to change the value instantly, so you can inspect and edit masks, flags and register values visually.
Every calculation happens entirely inside your browser, and no value you enter is ever sent to or stored on a server.