- .xlsb
- Free
- Nothing uploaded
An XLSB file is an Excel workbook saved in a compact binary form. It is often used for very large workbooks because it opens and saves faster than .xlsx. Not every program can read it, but this page can.
How to open an XLSB file
- Add the fileDrag it onto the page above or choose it from your device.
- Read the sheetsSwitch between sheets and scroll through the data.
- Convert if neededSave a copy as .xlsx or CSV so any program can open it.
Good to know
The viewer reads the data and shows formulas on request. If the workbook contains macros, they are not run. For very large files, see viewing large Excel files.
Frequently asked questions
What is an XLSB file?
An Excel workbook in a compact binary format, often used for large workbooks.
Can I open XLSB without Excel?
Yes. This page reads it directly in your browser.
Does it run macros?
No. The file is read as data only and nothing in it is run.
Is my file uploaded?
No. It stays on your device.