JSON to CSV Converter (with Flattening)
Convert JSON to CSV directly in your browser. Supports nested JSON flattening, array handling, and instant CSV download — no upload, no tracking.
orders/0/orderId, tags/1.When should you use this JSON to CSV tool?
- Convert API responses (JSON) into CSV for reporting
- Export JSON data to spreadsheets (Excel / Google Sheets)
- Flatten nested JSON objects into CSV columns
- Convert JSON arrays into spreadsheet-friendly columns (e.g., orders/0/amount)
- When you want a private, client-side converter with no uploads
Example use case:
You have an API response with nested objects like user/name and user/address/city. This tool flattens nested keys into CSV headers automatically, so you can quickly analyze the data in a spreadsheet.
Tip: Arrays are exported as indexed columns like tags/0, tags/1 and orders/0/amount — perfect for Excel and Google Sheets.
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JSON to CSV Converter FAQ
Yes. The conversion runs in your browser. Your JSON is not uploaded to any server.
Yes. Nested objects are flattened into dot-notation columns like user.name and user.address.city.
It supports a single JSON object (1 row) or an array of objects (multiple rows).
You can choose: Join (e.g. a|b|c), JSON (store the array as JSON text), or Index (items.0, items.1...).
It can handle large JSON depending on your browser/device. For huge files, use preview rows for faster UI, and download for the full CSV.
Yes. Download the CSV and import/open it in Excel or Google Sheets.