CSV to JSON

Spreadsheet data in, structured JSON out.

Input

Output

What this does

DEVS: PapaParse auto-detects delimiters and headers, outputs an array of objects. Client-side, no upload.

Paste CSV, get JSON. The first row becomes object keys. Each subsequent row becomes an object. Numbers and booleans are typed automatically.

Common use cases

Feeding spreadsheet data into a web app. Most APIs expect JSON. Most humans export CSV. This bridges the gap.

Building JSON fixtures for tests. Grab data from a spreadsheet, convert to JSON, drop it into your test suite.

Migrating configuration data. Legacy systems love CSV. Modern systems love JSON.

Things to know

European CSVs use semicolons instead of commas. The parser auto-detects the delimiter. Quoted fields with commas inside them are handled correctly. For very large files (100K+ rows), use the download button instead of scrolling.

Privacy

Your data never leaves your browser. No upload, no server processing.