Is my CSV data private?

Yes, all parsing runs entirely in your browser. No data is sent to any server. Your CSV content stays on your device.

Does it support custom delimiters?

Yes, you can use comma, semicolon, pipe, or tab as delimiters. Useful for TSV and European CSV formats.

Will headers be included?

If your CSV has a header row, those become the JSON keys. You can toggle header detection on or off.

What is the output format?

The output is a JSON array of objects, with each CSV row becoming one object and each column header becoming a key.

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CSV to JSON Converter

Convert CSV spreadsheet data to JSON format instantly. Supports custom delimiters, auto-detect headers. Free & private.

Has Headers Row

Comma (,)

Semicolon (;)

タブ

Pretty Print

CSV Input

JSON Output

CSV to JSON — Free Online Converter

Instantly convert CSV files into JSON arrays. Upload a spreadsheet or paste CSV text with any delimiter. The first row is treated as keys unless you disable headers. Resulting JSON can be pretty-printed or minified.

よくある質問

Comma, semicolon, and tab are supported. Select the appropriate delimiter before converting for accurate results.

Yes. Numeric values are automatically converted to numbers in the JSON output. Boolean values (true/false) are also converted automatically.

CSV to JSON Converter

CSV to JSON — Free Online Converter

よくある質問

What delimiters are supported?

Are numbers automatically typed?

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