CSV ↔ JSON Converter
5 toolsConvert CSV to JSON and back.
Runs in your browser — your files and text stay on your device
Convert CSV to JSON and back. Check how headers and commas inside quoted fields come through before you rely on the output. The data is processed in your browser, so spreadsheets with private data aren't uploaded.
Output
How to convert between CSV and JSON
- 1Choose a direction.
- 2For CSV → JSON: paste CSV with a header row.
- 3For JSON → CSV: paste a JSON array of flat objects.
- 4Copy the result on the right.
Frequently asked questions
Does the CSV parser handle quoted fields?
Yes — quoted fields can contain commas or line breaks, with escaped quotes handled correctly.
What JSON shape does JSON → CSV expect?
A flat array of objects; nested objects/arrays aren't supported.
Is my data uploaded anywhere?
No — parsing happens entirely in your browser.