CSV to JSON Converter
Convert CSV files to JSON free — instantly, with no sign-up, no watermark and no upload.
Zero server uploads. The CSV to JSON conversion happens inside your browser, so your file never leaves your device and nothing is stored by us.
Drop your CSV file here
or click to browse — accepts .csv
Instant and free
No account, no watermark and no file size limit — as fast as your device allows.
Completely private
Everything runs in your browser, so your files are never uploaded anywhere.
Works everywhere
Chrome, Edge, Safari and Firefox on Windows, macOS, Linux, Android and iOS.
Why convert CSV to JSON?
Developers and data analysts convert CSV to JSON to feed spreadsheet exports into APIs, JavaScript apps, NoSQL databases and test fixtures. Each row becomes an object keyed by the header names.
How are the column headers handled?
The first row is treated as the header, and every following row becomes one JSON object with those headers as its keys.
Are my CSV files uploaded anywhere?
No. The conversion runs inside your browser using your own device's processing power, so the file never leaves your computer or phone and nothing is stored on a server.
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