What happens if my JSON objects have different fields?

The CSV output includes every field seen across all objects as a column, leaving cells blank for objects missing a particular field.

Does it handle nested JSON objects when converting to CSV?

Simple nested values are represented within the cell — deeply nested structures don't map perfectly to CSV's flat, tabular format by nature.

Can I convert CSV back to JSON as well?

Yes, conversion works in both directions between JSON arrays and CSV tables.

Does JSON ↔ CSV Converter upload my files to a server?

No. JSON ↔ CSV Converter runs entirely in your browser using on-device processing, your files never leave your device.

JSON ↔ CSV Converter

Convert between JSON arrays and CSV tables.

Runs in your browser

JSON input

About this tool

JSON arrays of objects and CSV tables represent the same tabular data differently, and APIs, spreadsheets and data pipelines don't always agree on which one they expect. This tool converts between JSON and CSV in either direction, letting you move data between formats that different tools and systems require.

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