Excel to JSON Converter

Turn an Excel sheet into JSON your code can use straight away: an array of objects, one per row, with keys taken from your header row. Pick the sheet, check the preview, and copy or download.

Read the guide: How to Convert Excel to JSON
Open a workbook to begin
Drag an Excel file here, or

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How it works

  1. 1

    Open a workbook

    Drop in an XLSX or XLS file and choose the sheet you want.

  2. 2

    Set the header row

    Confirm the first row holds your column names, which become the keys in each object.

  3. 3

    Copy or download JSON

    Get a tidy array of row objects, ready for an API request, a config file or an app.

Instant & 100% private — nothing is uploaded

Everything runs locally in your browser. Your files are processed on your own device and are never sent to a server, so there are no upload waits, no size limits from us, and nothing is ever stored or logged.

Frequently asked questions

What does the JSON look like?
It is an array of objects, one object per data row. Each object uses your header-row cells as keys, so a sheet with Name and Email columns becomes objects like {"Name": "...", "Email": "..."}. That is the shape most APIs and apps expect.
What happens to empty cells?
An empty cell becomes an empty string or is left out, so the structure stays consistent across rows. Numbers stay numbers and text stays text, which means you can use the result without re-parsing every field.
Can I use the first row as data instead of headers?
Yes. If your sheet has no header row, you can switch to a mode that keys each value by its column letter or position instead, so no row is lost.
Is my file sent to a server?
No. Everything runs locally in your browser. Your file is read and processed on your own device, nothing is uploaded, and nothing is logged or stored.