JSON to CSV Converter
Runs in your browser — your files are never uploaded.
Turn a JSON array of objects into a spreadsheet-ready CSV. OkConverter collects the full set of keys across your objects to build the header row, then writes one CSV row per object with proper RFC 4180 quoting. Everything runs locally in your browser — your data is never uploaded.
How to convert JSON to CSV
- 1
Drop your .json file onto the box, or click to choose one.
- 2
OkConverter builds the header from your object keys and writes one row per record.
- 3
Click "Download" to save your .csv file.
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Frequently asked questions
What JSON shape is expected?+
An array of objects works best — each object becomes a row. A single object is exported as one row. Nested objects and arrays are stored as JSON text inside the cell.
What if objects have different keys?+
OkConverter uses the union of all keys as the header, so every column appears. Missing values are left blank for the rows that lack them.
Are my files uploaded?+
No. The conversion runs entirely in your browser on your device — your JSON is never uploaded.