Free data tool
Convert to JSON
Turn CSV, TSV, key-value text, or existing JSON into clean, formatted JSON in seconds.
Convert structured text into usable JSON
JSON is widely used for APIs, configuration files, data imports, and application development. This converter helps you transform common text formats without manually adding brackets, quotes, and commas.
Choose a format or leave it on auto detect. The converter can format existing JSON, turn delimited rows into an array of objects, and transform simple key-value lines into a JSON object.
Supported input formats
- JSON: validates and formats an existing JSON object or array.
- CSV: uses the first row as property names and converts following rows into objects.
- TSV: converts tab-separated rows using the same header-based structure.
- Key-value: converts lines such as
name: Resnovainto object properties.
Frequently Asked Questions
Is my data uploaded or stored?
No. Conversion happens entirely in your browser. The content you enter is not uploaded or saved by this tool.
Does the CSV converter support quoted values?
Yes. Quoted fields, commas inside quoted values, and escaped double quotes are supported.
Can I download the result?
Yes. Once conversion succeeds, you can copy the output or download it as a .json file.