JSON to CSV
Free online JSON to CSV converter. Flatten nested objects with dot notation, choose custom delimiters, and download instantly. 100% browser-based, no upload needed.
What is JSON to CSV conversion?
JSON to CSV conversion transforms structured JSON data into comma-separated values (CSV), a flat table format widely used in spreadsheets, databases, and data analysis tools.
How do I convert JSON to CSV?
Paste or upload your JSON data, configure options like delimiter and header preferences, then click convert. The CSV output is generated instantly and ready to download.
Is this JSON to CSV converter free?
Yes, it is completely free with no registration, no usage limits, and no watermarks on the output.
How are nested JSON objects handled?
Nested objects are flattened using dot notation. For example, {"address":{"city":"NYC"}} becomes a column named "address.city" with the value "NYC".
What delimiters can I choose?
You can choose from comma (,), semicolon (;), or tab (\t) as the field separator in the CSV output.
Is my JSON data uploaded to a server?
No. All conversion happens entirely in your browser. Your data never leaves your device, ensuring complete privacy.
Can I open the CSV in Excel or Google Sheets?
Yes. The generated CSV file is standard and compatible with Microsoft Excel, Google Sheets, LibreOffice Calc, and any other spreadsheet application.
What are common use cases for JSON to CSV?
Common uses include migrating data between systems, preparing API responses for analysis, converting NoSQL exports for spreadsheet use, and generating reports from JSON data.
How are JSON arrays converted?
Each element in a JSON array becomes a separate row in the CSV. Object properties within the array are flattened into columns using dot notation.
Can I use this tool offline?
Yes. Once the page is loaded, all processing runs locally in your browser with no internet connection required.
How to Use JSON to CSV
Convert JSON arrays or objects into CSV right in your browser. Nothing is uploaded — all flattening and delimiter handling happens locally on your device.
- Paste your JSON array into the input editor on the left; the CSV preview appears in the output panel on the right.
- Open the "Delimiter:" dropdown and pick "Comma (,)", "Semicolon (;)", or "Tab" to match the tool you will import into.
- Tick "Include headers" if you want the first CSV row to contain the column names.
- Enable "No quotes" when your target program misreads quoted fields and your values contain no commas.
- Copy the generated CSV from the output panel or download it as a .csv file.
Excel in many European locales expects semicolon-delimited files, so choose "Semicolon (;)" if comma-separated output opens in a single column.
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