Excel to JSON Converter

Runs in your browser — your files are never uploaded.

Convert an Excel workbook into a JSON array of objects. OkConverter reads the first sheet, uses the header row as keys, and emits one JSON object per row. Everything runs locally in your browser — your spreadsheet is never uploaded.

How to convert Excel to JSON

  1. 1

    Drop your .xlsx or .xls file onto the box, or click to choose one.

  2. 2

    OkConverter reads the first worksheet and maps each row to a JSON object.

  3. 3

    Click "Download" to save your .json file.

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Frequently asked questions

How are the JSON keys chosen?+

The first row of the worksheet is treated as the header, and each column name becomes a key in every JSON object.

Which sheet is converted?+

The first worksheet in the workbook. Move the sheet you want to the front in Excel if needed before converting.

Are my files uploaded?+

No. The conversion runs entirely in your browser on your device — your spreadsheet is never uploaded.

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