Data
JSON to CSV / CSV to JSON Converter
Turn arrays of objects into CSV, or CSV tables into JSON. Nested values are flattened with dotted keys so spreadsheet tools can still open the file.
How to use it
- Choose JSON → CSV or CSV → JSON.
- Paste content or upload a file.
- Review the preview and any flattening notes for nested objects.
- Copy the result or download it.
Example
A JSON array of orders becomes a CSV with columns such as id, customer.name, and totals.amount. Nested arrays are serialized as JSON strings so no rows are silently dropped.
Privacy
Conversion happens locally. Uploaded files are read in the browser and are not stored on our servers.
FAQ
How is nested JSON handled?
Object paths are flattened with dotted keys (customer.email). Arrays of objects become multiple logical rows only when the root value is an array. Nested arrays inside a row are stored as JSON text so the table stays rectangular.
Will this work with Excel?
Yes. Download CSV and open it in Excel, Google Sheets, or Numbers. If a locale expects semicolons, change the delimiter in the tool before downloading.
What if my CSV has quoted commas?
The parser respects RFC 4180-style quoting, so values containing commas, quotes, or line breaks are preserved.
Next step
Need this wired into a real system?
Estimators and converters help you think. Delivery still needs contracts, environments, and an owner.