Excel to JSON

Convert Excel spreadsheets into a clean JSON array, right in your browser. Free, private, nothing uploaded.

Drop files here or click to browse

Converted on your device. Nothing is uploaded — no size limit.

Frequently asked questions

Are my files uploaded to a server?

No. Everything is processed entirely inside your browser. Your files never leave your device or get sent anywhere.

How are rows mapped to JSON?

The first row is treated as keys (headers) and every following row becomes a JSON object, producing an array of objects.

Can I use this for APIs or imports?

Yes — the output is standard JSON you can paste into code, seed a database, or feed to an API.