Convert CSV and JSON files in either direction with quoted values, nested data and batch processing handled locally.
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CSV and JSON are the most common formats for moving structured data between spreadsheets, APIs and business systems. This converter detects the input format and produces the matching output in one step.
Quoted CSV values and changing JSON keys are handled automatically, while all source data stays on your device.
Yes. The CSV parser handles quoted commas, escaped quotes and quoted line breaks.
Use one object or an array of objects. Nested values are kept as compact JSON inside their CSV cell.
No. Conversion happens entirely in your browser.
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.csv,.json,text/csv,application/json · up to 20 MB · max 5 files
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