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data · convert
CSV to JSON
Paste or upload CSV — first row becomes the keys; see the JSON before downloading.
A little guidance. A better result.
How to use CSV to JSON
First row becomes keys — JSON previewed before download.
Prepare your input
Paste CSV with a header row.
Use the workspace
Inspect the JSON keys and records in the preview.
Check your result
Download and check quoted cells and missing values.
Know the limits
Use unique headers: duplicate column names cannot remain distinct keys in a JSON object.
Where does my input go?
This browser tool processes your input on your device. Optional analytics is a separate choice; it is not needed to use the tool. Keep your original until you have checked the result.
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