JSON to CSV Converter
Last updated: 2026 · Free online tool
What is JSON to CSV Converter?
Free online tool to convert between JSON arrays and CSV with file download
How to Use
- 1 Select Direction — Choose JSON to CSV or CSV to JSON.
- 2 Set Options — Configure the delimiter (comma, tab, semicolon) and whether to include header rows.
- 3 Enter Data and Convert — Paste data into the left input panel and click 'Convert'.
- 4 View Results and Download — The converted result appears on the right. Use the CSV download button to save as a file.
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Frequently Asked Questions
Yes, nested objects are flattened using dot notation. For example, {address: {city: 'Seoul'}} becomes the 'address.city' column.
All values in CSV are strings, so all values in the converted JSON are also strings. Additional processing is needed for number or boolean types.
Each object in the top-level array becomes one CSV row. Array values within objects are converted to strings.
Yes, UTF-8 encoding is used so Korean characters are properly included. Downloaded CSV files are also UTF-8.
Some Excel versions may not display Korean correctly without UTF-8 BOM. In that case, manually specify UTF-8 in Excel's 'Import Data' feature.