Dev Tools
JSON ⇄ CSV Converter
The JSON to CSV Converter turns an array of JSON objects into a clean CSV table, or takes a CSV file and turns it back into JSON, so you can move data between spreadsheets, databases, and APIs without writing a single line of parsing code. It's built for developers debugging API responses, analysts who need to open a data export in a spreadsheet, and students learning how structured data is shaped.
Everything happens locally in your browser — the JSON or CSV you paste in is parsed and converted on your own device, and nothing you enter is ever uploaded to a server or stored anywhere. That makes it safe to use with real production data exports, not just toy examples.
How to Use the JSON ⇄ CSV Converter
- Open the JSON ⇄ CSV Converter tool.
- Paste your JSON array or CSV data into the input box.
- Choose the conversion direction (JSON to CSV or CSV to JSON).
- Copy or download the converted result.
Frequently Asked Questions
Does this tool support nested JSON objects?
It's designed for flat arrays of objects with consistent keys; deeply nested objects should be flattened first for a clean CSV table.
Is my data uploaded anywhere when I convert it?
No — the conversion runs entirely in your browser's JavaScript engine, so your JSON or CSV never leaves your device or touches a server.
What happens if my JSON objects have different keys?
The converter collects every unique key across all objects and uses them as CSV columns, leaving cells blank where a particular object doesn't have that key.