How the CSV is read
- The first row becomes the property names.
- Commas, semicolons and tabs are detected automatically, including Excel exports from European locales.
- Quoted values with commas or line breaks inside them are handled correctly.
How to use the CSV to JSON Converter
- 1Paste your CSV or drop a .csv file.
- 2The result appears instantly.
- 3Copy the JSON or download it as a .json file.
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Frequently asked questions
Are my files uploaded anywhere?
No. Everything runs inside your browser on your own device. Nothing is sent to a server, so it works even offline once the page has loaded.
Are numbers kept as numbers?
Yes. With “Detect numbers & booleans” on, numbers, true/false and empty cells become real JSON values. Turn it off to keep everything as text.