JSON to CSV
JSON to CSV
Paste a JSON array of objects (or one object) to get spreadsheet-ready CSV. Nested objects and arrays are written as JSON text inside the cell.
The JSON to CSV Converter turns JSON data into a comma-separated file that Excel, Google Sheets, and every other spreadsheet or database tool can open. Developers receive data as JSON, but reports, audits, and everyday analysis usually happen in rows and columns. This tool makes that handover instant.
Give it an array of objects and it builds a header row from all the keys it finds, in the order they first appear, then one row per object. A single object works too and produces one data row. Values that contain commas, quotes, or line breaks are quoted properly following the standard CSV rules, so your spreadsheet reads them back exactly.
Nested objects and arrays cannot fit a flat grid, so they are written as compact JSON text inside their cell, and the tool says so openly rather than silently dropping data. Everything is converted locally in your browser, with no upload and no file size account limits for typical data.
How to use
- Paste a JSON array of objects, or a single object.
- Click Convert to CSV.
- Check the row and column counts in the status line.
- Copy the CSV, or download it as a .csv file and open it in your spreadsheet.
Frequently asked questions
What if objects have different keys?
The header includes every key found in any object. Objects missing a key get an empty cell in that column, so the grid always lines up.
How are nested values handled?
Objects and arrays inside a value are written as JSON text within the cell. CSV is a flat format, so this keeps the data visible and recoverable instead of discarding it.
Which separator and quoting does it use?
Commas separate fields, and any field containing a comma, quote, or newline is wrapped in double quotes with inner quotes doubled, matching the common CSV standard.
Is my data uploaded?
No. The conversion runs in your browser only.