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XLSM to JSON Converter

Convert XLSM files to JSON in seconds, free and unlimited.

🔒 Files are processed on your device. Nothing is uploaded.

How to convert XLSM to JSON

  1. Click Choose files or drop your XLSM files into the box. You can add several at once.
  2. Make sure JSON is selected as the output format.
  3. Press Convert, then download your JSON files.

XLSM

Excel workbook with macros enabled.

JSON

JavaScript Object Notation, the standard data format of web APIs.

Spreadsheets are converted with SheetJS. Formulas are kept as their calculated values; formats with a single table (CSV, HTML) export the first sheet.

Other XLSM conversions

Convert other files to JSON

FAQ

Is converting XLSM to JSON free?

Yes. Unlimited conversions, no sign-up, no watermark.

Are my files uploaded to a server?

No. FieldConvert processes files inside your browser, so your XLSM files never leave your device. That makes it private and fast, because there is no upload or download wait.

Is there a file size limit?

Only your device's memory. Files up to about 2 GB work in most desktop browsers.