Binary & hex converter
Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36.
How it works
Type a number in any field and the others update instantly. Very large whole numbers are supported without losing precision.
Frequently asked questions
Is this tool free?
Yes. It’s free to use, with no account and nothing to install.
Is my data private?
Yes. This tool works entirely on your device: nothing you enter or open is sent to a server.
Does it work on a phone?
Yes. It works in the browser of any recent phone, tablet or computer.