Convert JSON data to CSV format with customizable options
JSON to CSV
Convert JSON data to CSV format with customizable options
JSON Input
Conversion Options
CSV Output
Advanced JSON to CSV Converter
Features:
- • Large file support (up to 100MB)
- • Smart nested object flattening
- • Multiple delimiter options
- • Real-time validation & preview
- • Progress tracking for large datasets
Supported Formats:
- • JSON arrays of objects
- • API responses with data arrays
- • Nested object structures
- • Mixed data types
- • Complex array handling
Paste a JSON array and download a ready-to-open CSV in seconds
Paste your JSON array into the left panel or drag in a .json file. The tool validates it immediately and shows the object count, estimated output size, whether nested objects are present, and max nesting depth. Choose your delimiter — comma, semicolon, tab, or pipe — then decide whether to include a header row and whether to flatten nested objects into dot-notation columns like user.address.city. Hit Convert and the CSV renders in the right panel. The progress bar tracks large files in 1,000-row chunks so the page stays responsive.
Array handling and why it matters for your data shape
The Array Handling dropdown controls what happens when a value in your JSON is itself an array. Stringify wraps it in quotes as-is. Join collapses it to a comma-separated string in one cell. Expand creates additional rows. Pick the option that matches how the downstream spreadsheet or database expects the data. Copy or Download CSV when done — both buttons appear once the conversion completes.