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Convert CSV to JSON Online
Convert a CSV export into JSON records locally in your browser with header detection and type-safe review.
Problem
A spreadsheet or CSV export needs to become JSON for an API request, seed file, test fixture, or app import.
What to do
CSV is row-based and JSON is object-based. A converter maps headers to object keys so each row becomes a predictable JSON record.
- 1Paste the CSV or drop the file.
- 2Confirm delimiter and header settings.
- 3Copy or download the generated JSON array.
Use the browser tool
CSV → JSON parses a CSV (with automatic delimiter detection and header handling) into a clean JSON array of objects. Optionally infer types so numbers and booleans come through correctly. Ideal for turning a spreadsheet export into an API-ready payload — entirely in your browser.
People also ask
- How do I convert CSV to JSON?
- Paste your CSV into the input panel (or drop a file), adjust the options if needed, then copy or download the JSON from the output panel. The conversion happens instantly in your browser.
- Is my data uploaded or stored anywhere?
- No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
- Is CSV to JSON Converter free?
- Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.