CSV / JSON converter
Convert quoted CSV tables to JSON records and flat JSON records back to CSV.
Processed locally. No file uploads.
How to use
- Choose a conversion direction
- Paste CSV with unique headers or an array of flat objects
- Convert and download
What you can do
- Convert quoted CSV tables to JSON records and flat JSON records back to CSV.
- Editable input and copyable results.
Useful answers
Are spreadsheet formulas safe?
CSV export escapes cells beginning with formula characters. Nested objects are rejected instead of silently flattened.
What are the limits?
Text input is limited to 200,000 characters. Diff accepts 40,000 characters in total and stops long comparisons. JSON numbers use JavaScript precision.