CSV to JSON Converter
Convert CSV data to JSON format. Auto-detect delimiters and use first row as headers.
How to Use CSV to JSON Converter
- 1Paste your CSV data into the input editor or upload a .csv file.
- 2The delimiter is auto-detected, or you can select comma, tab, or semicolon.
- 3Toggle whether the first row should be used as JSON keys.
- 4Click "Convert" to generate the JSON output.
- 5Copy the JSON or download it as a .json file.
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Frequently Asked Questions
What delimiters are supported?▾
The tool supports comma (,), semicolon (;), tab, and pipe (|) delimiters. By default, it auto-detects the delimiter from the first line.
Does the first row become JSON keys?▾
Yes, by default the first row is used as headers (object keys). Each subsequent row becomes a JSON object with those keys.
How are quoted fields handled?▾
Fields enclosed in double quotes are handled correctly, including fields that contain the delimiter character or newlines.
Is my data secure?▾
Yes, all processing runs in your browser. No CSV data is sent to any server.
Can I convert large CSV files?▾
Yes. The tool handles CSV data of any length with no hard limit. For very large files, processing happens in your browser and may take a moment depending on your device.
What happens with empty cells?▾
Empty cells are converted to empty strings in the JSON output. The column key is still included in each object, just with an empty value.
Does this work on mobile devices?▾
Yes. The CSV to JSON converter runs entirely in your browser and works on any device with a modern browser, including phones and tablets.