JSON ↔ CSV · TSV · No upload

Free JSON CSV converter

Convert JSON to CSV, CSV to JSON or TSV to JSON directly in your browser. Flowfiles is built for API exports, Excel files and quick transformations without signup or upload.

Delimiter

Include / use headers Pretty JSON Flatten objects

Source data

Result

Ready to convert

Main features

JSON to CSV

Turn JSON arrays and objects into CSV columns.

CSV to JSON

Convert CSV rows into clean JSON arrays.

TSV support

Use tabs when CSV values contain commas.

Local

Data stays on your device.

Frequently asked questions

Is data uploaded?

No. Conversion happens locally in the browser.

Can I use Excel?

Yes. Semicolon delimiters are available for regional Excel settings.

Are nested objects supported?

Yes. Enable flattening to create dotted columns.

Do I need an account?

No. The tool works without signup.

JSON CSV guides

JSON CSV tool Convert JSON to CSV online Convert CSV to clean JSON Convert JSON to CSV for Excel Convert JSON and CSV without upload Convert semicolon CSV to JSON Flatten nested JSON to CSV Convert TSV to JSON Free JSON CSV converter without signup Convert an API JSON response to CSV Turn JSON into a CSV table