CSV to JSON
Convert CSV to JSON in your browser. Paste or upload a file, auto-detect the delimiter, use the header row for keys, and download pretty or minified JSON.
How it works
- 01Paste your CSV or drop a .csv file.
- 02Confirm the detected delimiter and header setting.
- 03Preview the JSON output, pretty or minified.
- 04Copy it or download the .json file.
Frequently asked questions
How does the CSV to JSON converter work?
It parses your CSV locally, handling quoted fields, escaped quotes and both Windows and Unix line endings, then emits an array of JSON objects using the header row as keys.
Does it detect the delimiter automatically?
Yes. The tool inspects your data and picks the most likely delimiter (comma, semicolon or tab) and you can override that choice manually if the guess is wrong.
What if my CSV has no header row?
Turn off the header toggle and each row becomes a JSON array of values instead of an object. With the toggle on, the first row supplies the property names.
Is my file uploaded to a server?
No. Parsing happens entirely in your browser. Your CSV never leaves your device, so you can convert confidential exports and reports safely.
Can I get minified JSON?
Yes. Switch between pretty-printed JSON for readability and minified JSON for the smallest size, then copy the result or download it as a .json file.