JSON formatter

Validate and format JSON locally for easier reading and debugging.

Your inputs stay in this browser. This tool sends only an anonymous use total after a successful result.

How to use the json formatter

Enter the requested values, review the units and assumptions, then calculate the result. The tool validates practical limits before running.

Does JSON leave my browser?

No. Formatting and parsing happen locally in this browser.

Count words and characters in any text without uploading it.