Of course, there’s no reason we can’t just store decimal digits. That’s call binary coded decimal or BCD and that has some advantages, too.

Learn how to use Windows Calculator to convert Decimal to Binary in Windows 11/10. You have to use the Programmer mode to do this.

Warnings Excel will only produce binary numbers with up to 10 bits. This means that it can only convert decimal numbers greater than -513 and less than 512.