CSV to JSON / JSON to CSV
Convert between CSV and JSON for pipelines, imports, and quick data checks.
When to use this tool
- Converting a spreadsheet export to JSON for a one-off import.
- Generating a fixture from a CSV pulled from a BI tool.
- Debating schema with PMs using a JSON view of their CSV mockup.
How it works
- Paste the source content.
- Pick the direction (CSV → JSON or JSON → CSV).
- Optionally tweak the delimiter and whether the first row is a header.
- Copy the output to clipboard.
Privacy: This tool runs entirely in your browser. Your input is not sent to our servers.
Output
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Frequently asked questions
Does it escape commas and quotes in CSV output?
Yes. Fields containing delimiters, quotes, or newlines are quoted and internal quotes are doubled per RFC 4180.
Can I convert nested JSON to CSV?
Flat object arrays convert cleanly. For deeply nested JSON, flatten it first (e.g. `user.name` instead of `user: { name }`).
What about BOM characters in CSV?
Leading BOMs are stripped automatically. Add one back manually if your downstream importer requires it.