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Data Converter
Convert between JSON, YAML and CSV — all six directions, in your browser.
Everything here runs entirely in your browser. Nothing you type, paste, or upload is ever sent to a server, logged, or stored.
About the Data Converter
Converts between JSON, YAML and CSV in all six directions, so a file in whichever format you were given becomes the one you actually need.
When you would use it
- Turning an API response into a spreadsheet-friendly CSV.
- Converting a configuration file between YAML and JSON.
- Flattening nested data to look at it as a table.
What it does not tell you
The three formats do not describe the same things, so a conversion is not always lossless. CSV has no nesting and no types — everything becomes a string, and deep structures have to be flattened or dropped. YAML carries comments and anchors that JSON cannot represent, and they are lost on the way through. Check the output when the input was not flat.