CSV to JSON
Convert CSV to JSON, free and private — your data never leaves your browser.
100% private: this tool runs entirely in your browser. Your file never leaves your device — nothing is uploaded, nothing is stored.
Download your file now — we never store anything, so it will be gone once you leave or refresh this page.
How to convert CSV to JSON
To convert CSV to JSON: 1) paste your CSV or drop a CSV file, 2) click Convert to JSON, 3) download the result. It's free, needs no signup, and runs entirely in your browser so your data never leaves your device. CSV is tabular, so nested fields are flattened to dot-notation columns (e.g. address.city, tags.0) and expanded back when converting from CSV.
Frequently asked questions
- How do I convert CSV to JSON?
- To convert CSV to JSON: 1) paste your CSV or drop a CSV file, 2) click Convert to JSON, 3) download the result. It's free, needs no signup, and runs entirely in your browser so your data never leaves your device. CSV is tabular, so nested fields are flattened to dot-notation columns (e.g. address.city, tags.0) and expanded back when converting from CSV.
- Is this CSV to JSON converter free?
- Yes, it is completely free with no signup, no watermarks and no limits.
- Is my data uploaded anywhere?
- No. The conversion runs directly in your browser using deterministic parsers — no AI, no API key, and nothing is ever uploaded to a server.