CSV to JSON Converter
Paste CSV and get a clean JSON array of objects, using the first row as the keys. Quoted fields, embedded commas and line breaks are handled correctly, and it all runs in your browser — your data is never uploaded.
- 🔒 100% private — no uploads
- 🆓 Free, no watermark
- 📱 Works on any device
How to convert CSV to JSON
- 1
Paste your CSV
Drop CSV text into the box, or type it. The first row is treated as the column headers.
- 2
Get JSON instantly
Each following row becomes a JSON object keyed by the headers, with quotes, commas-in-quotes and escaped quotes parsed correctly.
- 3
Copy the result
Copy the formatted JSON with one click. Everything stays on your device.
Why use CSV to JSON Converter?
Handles real-world CSV
Quoted fields, commas and newlines inside quotes, and doubled "" escaped quotes are all parsed per the usual CSV rules — not naive comma-splitting.
Header row → keys
The first row becomes the object keys, so you get an array of tidy, named objects ready to use in code.
100% private
Everything runs locally in your browser with JavaScript. Your input is never uploaded, stored or seen by anyone — it even works offline once the page has loaded.
Works on any device
No install and no account. Runs in any modern browser on Windows, macOS, Linux, Android or iPhone.
CSV looks simple — parsing it isn’t
Naive comma-splitting falls apart the moment a value contains a comma, a quote or a line break. Real CSV wraps such fields in double quotes and doubles any embedded quotes ("Doe, John" or 5""8"" for an inch mark), and a quoted field can even span lines. This converter parses those rules properly, which is why an address column or a free-text notes field survives the trip to JSON intact.
From spreadsheet to code
The usual workflow: export a sheet from Excel or Google Sheets as CSV, paste it here, and get a JSON array ready for an API request body, a test fixture, a database seed or a quick jq/JavaScript session. Because the first row becomes the keys, name your columns the way you want your fields named before exporting and the JSON comes out clean.
Frequently asked questions
How is the CSV mapped to JSON?
The first row is used as the field names, and every other row becomes one JSON object with those names as keys. The result is a JSON array of objects.
Is my data uploaded to a server?
No. The tool runs entirely in your browser, so whatever you paste stays on your device. It’s safe for tokens, secrets and confidential data, and works offline once loaded.
Does it handle commas and quotes inside values?
Yes. Fields wrapped in double quotes can contain commas and line breaks, and a doubled "" inside a quoted field is read as a literal quote — the standard CSV conventions.