Flatten JSON records into a CSV table, with nested values preserved as JSON.
Drop a file here, or paste your data. Maximum 10 MB. Text files must use UTF-8.
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JSON numbers use JavaScript precision. Quote large identifiers to preserve their digits. Duplicate object keys keep the last value.
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[{"name":"Ada","city":"Pune","active":true},{"name":"Lin","city":"Tokyo","active":false}]What is JSON to CSV Converter?
Flatten JSON records into a CSV table, with nested values preserved as JSON.
Rows are JSON objects. Column names come from the union of their keys. Nested objects and arrays are stored as JSON strings within cells, so nested structure is not silently discarded.
Why use JSON to CSV Converter?
Use this tool to inspect a small dataset or prepare data for another application without installing software. Processing takes place in this browser. No account is required.
How to use JSON to CSV Converter
- Paste your input, upload a file, or load Sample Data.
- Choose any applicable options and select Convert.
- Review the output, then copy or download it.
Example
Input
[{"name":"Ada","city":"Pune","active":true},{"name":"Lin","city":"Tokyo","active":false}]Output
name,city,active Ada,Pune,true Lin,Tokyo,false
Common problems
A top-level object becomes one row. Arrays of primitives use a value column. For mixed arrays, normalize records first. CSV has no type system: consumers decide how to interpret each cell.
Frequently asked questions
Is my conversion data uploaded?
No. Conversion inputs and outputs remain in this browser. Contact form messages are handled separately by WordPress.
Can I process large files?
The default limit is 10 MB. Browser memory and data complexity can impose lower practical limits.
Do I need an account?
No account is needed to use this tool.
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