How Are Empty Cells Handled?

They become empty strings so every record keeps the same set of keys — predictable for code that consumes the output.

Is Anything Uploaded?

No. The workbook is read entirely in your browser.

Excel To JSON Converter

Convert a worksheet into JSON records keyed by its header row — parsed locally, never uploaded.

Excel Workbook

Convert a worksheet into clean JSON, entirely in your browser.

Choose An Excel File Or Drop It Here.xlsx workbooksFirst Row Contains Column Names

JSON Output

Awaiting Workbook

Load a workbook to see JSON here.

With column names on, each row becomes an object keyed by the header row; otherwise you get an array of row arrays.

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What Is the Excel To JSON Converter?

The Excel To JSON Converter turns any worksheet into JSON: with headers on, each row becomes an object keyed by the first row's column names; with headers off you get an array of row arrays. Multi-sheet workbooks include a sheet picker.

How It Works

Drop in an .xlsx file, pick the worksheet, toggle whether the first row holds column names, then copy or download the JSON.

When to Use It

Use it to seed APIs, fixtures and configuration from spreadsheets your team maintains in Excel.

Frequently Asked Questions

How Are Empty Cells Handled?: They become empty strings so every record keeps the same set of keys — predictable for code that consumes the output.
Is Anything Uploaded?: No. The workbook is read entirely in your browser.

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