What is the JSON ↔ CSV Converter?
A bidirectional converter between JSON and CSV formats. JSON→CSV takes a JSON array of objects and produces a spreadsheet-ready CSV. CSV→JSON takes tabular data with a header row and produces a JSON array of objects where each row becomes an object with keys from the header.
How to Use It
1
Open the tool
Go to JSON & API and scroll to the JSON ↔ CSV Converter section.
2
Select direction
Choose JSON→CSV to convert to spreadsheet format, or CSV→JSON to convert to JSON objects.
3
Paste your data
For JSON→CSV: paste an array of flat objects. For CSV→JSON: paste CSV data with a header row as the first line.
4
Copy and use
Copy the output CSV or JSON. Paste CSV into a spreadsheet app or JSON into your code.
Pro Tips
💡The JSON input must be an array of objects (
[{...},{...}]), not a single object or nested structure.💡Column headers in the CSV come from the keys of the first JSON object. Make sure all objects have consistent keys.
💡Values containing commas or double quotes are automatically escaped per RFC 4180 — you don't need to handle this manually.
Frequently Asked Questions
What JSON structure is supported?
An array of flat objects:
[{"name":"Alice","age":30},{"name":"Bob","age":25}]. Nested objects are not automatically flattened.Does the CSV include headers?
Yes — headers are auto-generated from the keys of the first JSON object and placed on the first CSV row.
Can I open the result in Excel?
Yes — save the CSV output as a
.csv file and open it in Excel, Google Sheets or LibreOffice Calc.Is my data uploaded anywhere?
No — all conversion happens in your browser. Your data never leaves your machine.
Convert JSON ↔ CSV now
Open the converter and export your data to a spreadsheet or import CSV as JSON — free, no login.
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