Which error is shown for division by zero?

In Microsoft Excel, the #DIV/0! error appears when a formula attempts to divide a number by zero or a cell that is empty (which Excel treats as zero). This error acts as a warning that the operation is mathematically undefined—division by zero has no valid result.

For example, entering =10/0 or =A1/B1 where B1 is empty will result in the #DIV/0! error instead of a number. Excel displays this error to indicate that the data isn't valid or is missing .