CSV ↔ JSON
Convert between CSV and JSON.
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How to use CSV ↔ JSON
CSV ↔ JSON converts between formats right in your browser, keeping structure and content intact so you can move data between tools without a subscription.
Step by step
- 1Paste the source content or upload the file.
- 2Confirm the detected input format.
- 3Convert and inspect the preview.
- 4Copy or download the converted output.
What to expect
- A faithful conversion of the content — structure preserved, styling normalised.
- Warnings when something in the source can't be represented in the target format.
- Instant results for typical file sizes.
Common use cases
- Moving data between a spreadsheet, an app and a database.
- Publishing notes written in one format on a platform that wants another.
- Preparing an import file that a system will accept.
Privacy & data
Everything runs locally in your browser. Your file is never uploaded to a server, so nothing leaves your device.
Frequently asked questions
Related tools — send your output onward