CSVJSON

CSV to JSON converter

Convert CSV files to JSON right in your browser. Nothing is uploaded, so it’s fast and private.

Drop files inside the box. They stay on your device. How we know

Open in its own tab

Nothing is uploaded
Files are converted inside your browser tab.
Works offline
Once the page has loaded, turn off Wi-Fi and it still converts.
Free, up to 50 at once
No sign-up, no watermark, no waiting.

How to convert CSV to JSON

1
Drop your CSV files into the box, or tap Choose files.
2
Check the settings if you like.
3
Download each JSON file, or all of them as one ZIP.

About the formats

CSV

CSV is a plain-text table: one row per line, values separated by commas. Spreadsheets and databases import and export it.

JSON

JSON is the structured text format used by web APIs and apps.

Questions

JSONCSVJSON to CSV

Updated October 17, 2026