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CSV to JSON Converter

Convert CSV files to JSON in seconds, free and unlimited.

🔒 Files are processed on your device. Nothing is uploaded.

How to convert CSV to JSON

  1. Click Choose files or drop your CSV files into the box. You can add several at once.
  2. Make sure JSON is selected as the output format.
  3. Press Convert, then download your JSON files.

CSV

Comma-separated values: plain-text tables accepted by every spreadsheet and database.

JSON

JavaScript Object Notation, the standard data format of web APIs.

Spreadsheets are converted with SheetJS. Formulas are kept as their calculated values; formats with a single table (CSV, HTML) export the first sheet.

Other CSV conversions

Convert other files to JSON

FAQ

Is converting CSV to JSON free?

Yes. Unlimited conversions, no sign-up, no watermark.

Are my files uploaded to a server?

No. FieldConvert processes files inside your browser, so your CSV files never leave your device. That makes it private and fast, because there is no upload or download wait.

Is there a file size limit?

Only your device's memory. Files up to about 2 GB work in most desktop browsers.