CSV to JSON
Convert CSV rows into a JSON array of objects.
Choose your file
Drop your file here
CSV, TSV, TXT files. Nothing is uploaded — your file stays on this device.
Settings
Automatic detection is right almost always. Override it if columns come out wrong.
Off by default: turning "007" into 7 loses information that often matters.
Add a file to continue.
Was this tool helpful?
About CSV to JSON
- What does CSV to JSON do?
- Convert CSV rows into a JSON array of objects.
- Who is it for?
- Analysts and operations teams moving data between systems, developers who need a quick format conversion, and anyone whose CSV keeps breaking when Excel opens it.
- Is it free?
- Yes. CSV to JSON is free with no account, no watermark on your output, no daily cap and no trial period. Because it runs on your own device it costs us nothing to run, which is why there is no catch.
- Is it safe to use with confidential files?
- Yes, and not because we promise to behave. CSV to JSON never sends your file anywhere — the work happens in your browser. There is no upload, so there is no copy of your document in our systems at any point.
- What file formats are supported?
- Input: CSV, TSV, TXT. Output: JSON.
How to use it
- 1
Add your file
Drag it onto the box above, or use Browse files. On a phone you can also take a photo or pick from your camera roll.
- 2
Check the settings
Sensible defaults are already chosen. Most people never need to change them.
- 3
Run it
The progress bar shows real progress, not a decorative animation. Everything happens on your device.
- 4
Preview the result
Look at the output before you download. If it is not right, adjust a setting and run it again — nothing has been saved anywhere.
- 5
Download
Save the file. Closing this tab discards it from memory, so download anything you want to keep.