JSON ↔ CSV

Convert JSON arrays to CSV and back — with delimiter and quote options.

JSON array

CSV output

Output will appear here as you type.

Features

Converts both ways — a JSON array of objects to CSV rows, and raw CSV back into typed JSON records.
Auto-detects the delimiter when parsing CSV, so semicolon and tab files import without manual setup.
Handles comma, semicolon, tab, and pipe delimiters plus a header-row toggle for European and TSV exports.

How it works

Pick a direction: JSON → CSV to flatten an array of objects, or CSV → JSON to parse spreadsheet text into records.
Set the delimiter (comma, semicolon, tab, or pipe) and toggle whether the first row holds column headers.
Watch the converted output update live, then copy it or download the .csv / .json file.

Your files never leave this page

Every conversion runs entirely in your browser using WebAssembly. There is no upload, no server-side processing, no analytics, and no cookies. Open DevTools → Network during the operation and you will see zero outbound traffic.

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Topics covered

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