📖 Read the full Number Base Converter guide — how it works, examples & FAQ →
How to use this tool
- Type a number.
- Pick the input and output bases.
- Copy the converted value.
Example
255 (base 10) → FF (base 16)
Why it's private
This tool runs entirely in your browser using JavaScript. Whatever you paste is processed on your own device — it is never uploaded to a server, logged, or stored. Built by Calabi, which also strips AI metadata and C2PA signals from images and video.