Number Formatter
Format numbers with thousand separators, fixed decimals, locale, and scientific options.
How to Use
- Type a number or list (newline-separated).
- Pick options; output updates live.
Notes
About the Number Formatter
The Number Formatter gives you a fast, free answer for everyday maths and number work without sending anything off your device. Format numbers with thousand separators, fixed decimals, locale, and scientific options.
How it works
Type in what you have, and the answer shows up right away. Change anything and it updates by itself. Everything runs in your browser, so it is fast and nothing you type is sent away.
Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.
Frequently Asked Questions
Locales?
Uses Intl.NumberFormat — all browser locales supported.
How do I use the Number Formatter?
Just type your numbers. The answer shows up right away — there is no button to press. Change anything and it updates by itself.
Does it cost anything or need an account?
No. The tool is completely free, there is no account to create, and it keeps working offline after the page first loads.
Is anything I type uploaded?
No. The tool works entirely on your device, so the values you enter never leave your browser.
Common Use Cases
Reports
Consistent formatting.
Last updated: