JSON to CSV Converter
Flatten arrays of JSON objects into clean CSV output, ready for any spreadsheet. Nested fields are flattened automatically so nothing in your data gets dropped during conversion.
How to use the JSON to CSV Converter
- Paste a JSON array of objects into the input area.
- Press convert to generate CSV rows from the objects.
- Review the header row and the flattened nested columns.
- Copy the CSV or save it for spreadsheet use.
When the JSON to CSV Converter is useful
- Turning API response data into reports for non-technical stakeholders.
- Preparing analytics exports for tools that only accept CSV imports.
- Comparing records side by side, which is easier in a grid than in raw JSON.
- Archiving structured data in a universally readable format.
How the JSON to CSV Converter works
The converter walks the array, collects every key it encounters, and builds a column for each, flattening nested objects into compound names like address.city. Values that are arrays or objects become serialized text inside their cell. The header row uses the first-seen key order for predictability. Conversion is a local operation, so exported customer data never touches a network.
Limits to keep in mind
Extremely heterogeneous arrays produce many sparse columns; review the output shape before sharing widely.
Frequently asked questions
What JSON shapes does it accept?
An array of objects converts most cleanly; a single object is treated as a one-row array.
How are nested fields handled?
They are flattened into dotted column names so each nested value gets its own column.
Are commas inside values escaped?
Yes, output follows standard CSV quoting so values containing commas or quotes remain intact.
Last reviewed: October 2026.