📖 Read the full Number Formatter guide — how it works, examples & FAQ →
How to use this tool
- Enter a number.
- Pick a separator.
- Copy the formatted number.
Example
1234567 → 1,234,567
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.