Free JSON to CSV Converter
Developers and data analysts often need to switch between JSON and CSV. This tool handles the conversion instantly with no server involved.
Why use this?
- Convert JSON ↔ CSV both ways
- Preview before downloading
- Also available as a server API for scripts and pipelines
How it handles your data
JSON arrays of flat objects convert cleanly to CSV rows and columns. Nested objects (an object inside another object) are converted to their string representation rather than flattened into separate columns — for deeply nested data, consider restructuring it first or processing it with a script.
Common uses
Exporting API responses into a spreadsheet for non-technical teammates, preparing data for import into tools that only accept CSV, or converting a CSV export back to JSON for use in a script — all without installing anything or writing conversion code.
FAQ
Does it flatten nested JSON objects into columns?
No — nested objects are converted to their text representation, not split into separate columns. For flat JSON (no nested objects), conversion is clean and direct.
Is there a size limit?
Very large files may slow down the browser since everything processes locally, but there's no artificial cap.
Can I automate this instead of using the browser tool?
Yes — a free API endpoint (/api/csv-json) is available for scripts and pipelines, documented on the API page.