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CSV to JSON

Turn CSV rows into a JSON array of objects, with quoted fields and embedded line breaks handled correctly.

Convert CSV to JSON

Paste CSV to begin.
Parsing runs locally in your browser; nothing is uploaded.

How to use the CSV to JSON

  1. Paste the CSV data you want to convert.
  2. Pick a delimiter, or leave auto detect on, and set the header options.
  3. Click Convert to JSON, then copy the JSON or download it as a file.

Features

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Frequently Asked Questions

Common questions about the free online csv to json.

Paste your CSV data, choose a delimiter if auto detect struggles, and click Convert to JSON.
Yes. Fields wrapped in double quotes may contain the delimiter, line breaks and doubled quotes, exactly as the CSV standard describes.
The tool inspects the first non empty line and picks the delimiter that occurs most often outside quotes, falling back to a comma.
With type detection on, values such as 42, 3. 5, true, false and null become JSON numbers, booleans and null.
Untick First row is the header and the output becomes an array of arrays with one array per row.
A short row gets null for the columns it does not contain, so every object in the result keeps the same keys.
Yes, click Download .json to save the converted result as a file on your device.
No. Everything is parsed locally in your browser, and nothing is ever uploaded.
Windows, Unix and old Mac line endings are all normalised, so files from any system work.
Yes, it is free and unlimited with no account required.

Last updated: October 10, 2026