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JSON ↔ CSV Converter

Convert JSON to CSV and CSV to JSON bidirectionally.

Input (JSON)

Output (CSV)

About this tool

Processing happens directly in your browser. No files are uploaded to the server.

JSON ↔ CSV Converter transforms a JSON array of objects into a CSV spreadsheet and back. Headers are automatically derived from JSON keys. Quoted CSV fields with commas are handled correctly.

How to use

1 Choose the direction: JSON → CSV or CSV → JSON.
2 Paste your data into the input box.
3 Click Convert to get the result.
4 Copy the output or use it directly.

Frequently asked questions

What JSON structure is supported?

An array of objects with consistent keys. Example: [{\"name\":\"Alice\",\"age\":30},{\"name\":\"Bob\",\"age\":25}]

Are CSV fields with commas handled?

Yes. Values containing commas are automatically quoted.

Is my data uploaded?

No. Conversion runs locally in your browser.

Can I convert large files?

Yes, within browser memory limits.