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JSON to CSV Converter

Free online JSON to CSV: convert JSON arrays/objects to CSV with nested field flattening and download. Local processing for data analysis.

How to use: 3 simple steps

Step 1

Paste JSON

Paste JSON array/object.

Step 2

Convert

Click to CSV.

Step 3

Download

Get the CSV file.

Key features

Local processing

All processing runs locally in your browser; data is never uploaded.

Free

Free to use, no limits.

FAQ

What input does JSON-to-CSV support?
JSON arrays (recommended) and single objects; nested objects flatten to parent.child fields, arrays serialize to JSON strings.
Can the CSV open in Excel?
Yes — open or import directly; field names become headers and data aligns in rows for analysis.
How are nested fields handled?
Nested objects expand to parent.child columns (e.g. user.name), keeping complex data structured.
Is online conversion safe?
Safe — runs locally, data never uploads, suitable for business data and API responses.
What is it best for?
API export, data analysis, Excel processing, reports, migration and cleaning.
Are there limits on free use?
No. Free, no registration, unlimited, large JSON supported.
Can I download the file?
Yes — one-click .csv download, or copy the table content.
Are special characters handled?
Yes — commas, quotes and newlines auto-escape to prevent column shifts.