Does this handle nested JSON objects?

Currently, the parser works best with flat arrays of JSON objects (which directly map to CSV rows). Highly nested data may require flattening first.

Are my CSV spreadsheets sent to a server?

Absolutely not. This tool is built using offline browser technologies (PapaParse). Your spreadsheets and data are completely private.

Can I format messy JSON code here?

Yes! Even if you aren't converting to CSV, you can paste messy, minified JSON into the left pane and click the "Prettify" icon to format it perfectly.

JSON Data

CSV Data

JSON <-> CSV Converter

Conversion Directions

Strictly Offline

All file parses, flattens, or unparses execute inside your browser client memory. No datasets or parameters are sent online.

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How to Use the JSON <-> CSV Tool

Convert JSON to CSV and CSV to JSON instantly in your browser. Supports nested objects and arrays. Free, offline, no uploads, no account required.

1
Paste your JSON array or CSV text into the respective editor pane, or use the "Upload" icon to load a file.
2
Click the "JSON to CSV" or "CSV to JSON" action button in the sidebar to perform the data conversion.
3
Review the results in the opposite pane, then click the "Download" icon to save the new file to your computer.

Why Choose Our JSON <-> CSV?

Bi-Directional Conversion

Seamlessly translate complex JSON arrays into flat CSV spreadsheets, or turn tabular CSV data into structured JSON objects.

Robust Error Handling

Instantly catch and highlight syntax errors in your JSON payloads or malformed rows in your CSV files before conversion.

Direct File Export

Download your newly converted .json or .csv files instantly, or upload existing local files directly into the editor.

100% Client-Side

Working with customer data? Our parsing engine runs entirely in your browser memory, ensuring strict data privacy.

Frequently Asked Questions

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