Paste CSV data or upload a CSV file and instantly convert it to clean, formatted JSON — headers are detected automatically, and quoted fields with commas are handled correctly. Great for developers importing spreadsheet data into an app or API.
Spreadsheets export as CSV, but most apps and APIs expect JSON. This tool converts CSV data — pasted directly or uploaded as a file — into a clean JSON array of objects, using the first row as field names automatically.
It correctly handles quoted fields that contain commas (like "Smith, Jr."), so exports from Excel, Google Sheets or Numbers convert cleanly without breaking apart mid-field.
Step 1 — Paste or upload your CSV. Paste CSV text directly, or use the file picker to upload a `.csv` export from a spreadsheet.
Step 2 — Convert to JSON. The first row is used as field names automatically, and each following row becomes a JSON object.
Step 3 — Copy or download the result. Grab the JSON directly, or download it as a `.json` file ready to import into your app or API.
Missing header row. This tool assumes the first row contains column names — if your CSV starts straight with data, the first row of actual data will be used as field names by mistake.
Inconsistent column counts. If a row has fewer or more values than there are headers, some fields may end up empty or misaligned — double check your source data.
Unescaped commas inside values. Values containing commas must be wrapped in double quotes in the CSV, otherwise they'll be split into separate fields incorrectly.
Yes. Fields wrapped in double quotes — including ones containing commas — are parsed correctly as a single value, just like a spreadsheet application would handle them.
Yes, use the file upload option to load a `.csv` file, which will be read and converted automatically.
The tool assumes the first row contains field names. If your CSV has no headers, add a header row manually before converting, or the first data row will be used as field names.
No. Parsing and conversion happen entirely in your browser using JavaScript — nothing is sent anywhere, even when uploading a file.
Most spreadsheet tools export data as CSV, but web apps, databases and APIs almost universally expect JSON. Converting bridges the gap between spreadsheet workflows and code.