CSV to JSON Converter
Convert your CSV data to JSON format instantly and securely in your browser.
Convert CSV Spreadsheets to JSON
Paste CSV data or upload a file and get a valid JSON array in one click — the first row becomes the object keys, every following row becomes an object, and quoted fields are handled correctly.
Copy the JSON or download it as a .json file, ready to feed into your app, API, or database import. Everything runs locally in your browser.
Valid JSON output
The converter produces properly escaped, valid JSON arrays — paste it straight into code or an API payload.
Paste or upload
Work from pasted text or drop in a CSV file; download the JSON result when you are done.
Private by design
Conversion runs entirely in your browser with JavaScript — spreadsheets you paste or upload are never sent to a server.
How to use
- Paste your CSV data or upload a CSV file.
- Click Convert to JSON.
- Copy the JSON or download it as a file.
Frequently Asked Questions
Does the first row become the keys?
Yes. The header row is used as the property names for each JSON object; every data row becomes one object in the array.
How are commas inside fields handled?
Standard CSV quoting rules apply — fields wrapped in quotes can contain commas and line breaks safely.
Can I upload a CSV file instead of pasting?
Yes. Drop a .csv file into the tool or paste the text directly — both work the same way.
Is my CSV data uploaded anywhere?
No. Parsing and conversion happen locally in your browser — nothing leaves your device.
Is the converter free?
Yes, free with no signup.
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