JSON to TOML Converter
Convert JSON configuration objects into TOML tables with typed tables and explicit checks for unsupported null values.
Your input is sent to this site only after you choose Convert on server. The conversion runs for this request and no history is saved. Upload up to 4 MiB combined; Office files have a 2 MiB limit.
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Edit the example text or paste your own content.
How to use JSON to TOML Converter
- Choose the example or select your input files in the required format.
- Check the options, then select Convert on server to upload and process the input.
- Review the result and download the converted file.
What this conversion produces
Prepare TOML configuration from a JSON object while retaining nested tables, strings, booleans and finite numbers. Paste the configuration and download a TOML file that can be reviewed in a text editor. Property names are handled by the serializer rather than manually concatenated, which helps preserve punctuation and escape characters in keys and string values.
Supported input and practical limits
TOML has no null value, so null anywhere in the input is rejected. The root must be an object, and the serializer determines which arrays and nested structures are representable. Numbers must stay within JavaScript’s safe integer range when integral; larger identifiers should be strings. This converter does not infer date-time values from strings. The text limit is 2 MiB with a maximum nesting depth of 32.
Example input
{"app":{"name":"Utilixio","enabled":true},"server":{"port":3000,"hosts":["localhost","example.com"]}}What should I know before converting?
TOML has no null value, so null anywhere in the input is rejected.
Is input uploaded?
This tool sends input to this site’s conversion API after you select Convert on server. Files use bounded workers and, when needed, private temporary folders deleted after processing or cancellation. No conversion history is saved. The converter does not upload files to a third-party conversion service.