Flatten JSON arrays into clean, spreadsheet-ready CSV instantly. 100% client-side privacy, custom delimiters, and proper quoting — built for developers and analysts.
| name | age | city | |
|---|---|---|---|
| John Doe | 30 | New York | [email protected] |
| Jane Smith | 25 | Los Angeles | [email protected] |
| Bob Johnson | 35 | Chicago | [email protected] |
Try these sample datasets
A JSON to CSV converter turns structured JSON data — typically an array of objects from an API response or database export — into comma-separated values you can open in Excel, Google Sheets, or any spreadsheet tool. Our free JSON to CSV converter runs entirely in your browser: paste your JSON, and it builds the column headers from your object keys, quotes fields correctly, and produces a download-ready CSV file. No signup, no uploads — your data never leaves your device.
Objects with different keys? No problem — the converter unions all keys across your array into one consistent header row, leaving missing values blank.
All JSON to CSV conversion happens in your browser. API responses with sensitive data never leave your device.
Fields containing commas, quotes, or line breaks are quoted and escaped per RFC 4180, so Excel and Google Sheets open the file perfectly.
Arrays of objects, arrays of arrays, inconsistent keys, and nested values (serialized inline) all convert without manual cleanup.
Turn a JSON API response into a CSV your non-technical teammates can open in Excel in seconds.
Convert MongoDB or Firebase JSON exports into CSV for import into SQL databases, BI tools, or CRMs.
Move logs and analytics events from JSON into spreadsheets for pivot tables, charts, and quick exploration.
Everything you need to know about our online JSON to CSV converter.
Arrays of objects work best — each object becomes a row and keys become columns. Arrays of arrays convert row-by-row, and a single object becomes a one-row CSV. Nested objects and arrays are serialized as JSON strings inside their cell.
The converter builds the header row from the union of all keys found across the array, in first-seen order. Rows that lack a key simply get an empty cell.
No. Any field containing the delimiter, quotation marks, or line breaks is automatically wrapped in quotes with inner quotes doubled (e.g. "Said ""hello"""), following the RFC 4180 convention Excel expects.
Never. The conversion runs entirely in your browser's JavaScript engine. You can disconnect from the internet and it still works — ideal for confidential API data.
Some Excel locales (mostly European) expect semicolons instead of commas. Switch the delimiter to semicolon and re-download, or use Excel's Data → From Text import wizard.
Our free JSON to CSV converter turns raw JSON into Excel-ready CSV without scripts, regex, or uploads. Bookmark this json to csv online tool and skip the manual reformatting forever.
No registration, no tracking of your content, no server uploads. Don't just take our word for it:
Your files and text are processed entirely on your device. Nothing is ever sent to us.
Once loaded, this tool keeps working with your Wi-Fi turned off. Try it.
Open your browser's DevTools → Network tab. You'll see zero requests carrying your data.
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