Tools / File Converter / NUMBERS to XLSB Converter

NUMBERS to XLSB Converter

Convert NUMBERS files to XLSB. Free and without uploading.

This tool converts NUMBERS files to XLSB. Apple Numbers spreadsheet.

Binary Excel workbook. All sheets, numbers and dates are carried over. Some formatting, such as cell colours, may be lost in the target format.

Conversion happens inside your browser; your files are never sent to a server.

How to use

1. Drag and drop your NUMBERS files, paste them, fetch one from a link, or use "Choose files".
2. The target format is preselected; you can add several files at once.
3. Press "Convert" and download the XLSB files.

Frequently asked questions

Is anything lost when converting NUMBERS to XLSB?

The content is kept; formatting the target format doesn’t support (such as colours or fonts) may be lost.

How many files can I convert at once?

There is no limit. Download the results one by one or as a ZIP.

Are my files uploaded?

No. Your NUMBERS files are converted to XLSB inside your browser.