This article describes the formula syntax and usage of the BIN2DECfunction in Microsoft Excel.
Converts a binary number to decimal.
The BIN2DEC function syntax has the following arguments:
Number Required. The binary number you want to convert. Number cannot contain more than 10 characters (10 bits). The most significant bit of number is the sign bit. The remaining 9 bits are magnitude bits. Negative numbers are represented using two's-complement notation.
If number is not a valid binary number, or if number contains more than 10 characters (10 bits), BIN2DEC returns the #NUM! error value.
The example may be easier to understand if you copy it to a blank worksheet.
How do I copy an example?
Select the example in this article.
Important Do not select the row or column headers.
Selecting an example from Help
In Excel, create a blank workbook or worksheet.
In the worksheet, select cell A1, and press CTRL+V.
Important For the example to work properly, you must paste it into cell A1 of the worksheet.
To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
After you copy the example to a blank worksheet, you can adapt it to suit your needs.