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JSON to CSV Smart Mapper
Convert JSON to CSV online for free. Automatically flatten nested JSON objects using dot notation and download clean spreadsheets. No signup, instant download.
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JSON to CSV Smart Mapper
> Paste nested JSON. We will automatically flatten nested objects using dot notation (e.g. user.name) and convert arrays to semicolon-separated strings.
Frequently Asked Questions
Can this tool handle nested JSON objects?+
Yes — nested objects are flattened using dot notation (e.g. user.address.city becomes a single column).
What's the maximum JSON file size supported?+
The tool runs entirely in your browser and can handle JSON files up to several MB without any upload limits.