CSV to JSON

Paste CSV with a header row and get a clean JSON array.

JSON → CSVCSV → JSON

Input

Output

How to use CSV to JSON

Header as keysThe first row becomes the property names.
Typed valuesNumbers and true/false are converted to real JSON types.
Auto delimiterComma, semicolon and tab-separated data are detected automatically.

Can I convert data copied from Excel?

Yes. Copying cells from Excel gives tab-separated text, which is detected automatically.

What about quoted values with commas?

Quoted fields and escaped quotes follow the CSV standard (RFC 4180).

Is my data uploaded?

No. Everything runs in your browser.

Beautify, minify and validate JSON instantly with syntax highlighting and precise error locations.

Convert text and files to Base64 and back. UTF-8 safe, URL-safe variant and data URL output included.

Percent-encode text for safe URLs or decode %-sequences back to readable text, with a query-string breakdown.

Compute MD5 and SHA checksums for text or any file — and check a download against its published hash.

Create random v4 or sortable v7 UUIDs in bulk — cryptographically secure and generated in your browser.

Paste a JSON Web Token to read its claims, check if it has expired and verify HMAC signatures — privately.