BIN2DEC Function

Basic Description

Hexadecimal (base 16), decimal (base 10), octal (base 8), and binary (base 2) are the most commonly used numeral systems in engineering and computing. Therefore, Excel has provided functions to convert numeric values to and from each of these systems. The Excel Bin2Dec function converts a Binary (a base-2 number) into a decimal number.

Syntax: BIN2DEC( number )

Where the number argument is the binary number that is to be converted to decimal. Note that the supplied number argument must not be more than 10 characters (40 bits) long. The most significant bit of this value denotes the sign of the number and the remaining 39 bits denote the magnitude. Negative numbers are represented using two’s complement notation.

 

Bin2Dec Function Examples

The following spreadsheet shows examples of the Excel Bin2Dec function. The format of the function is shown in the spreadsheet on the left and the result is shown in the spreadsheet on the right.

 Formulas:
A
1 =BIN2DEC( “10” )
2 =BIN2DEC( “11” )
3 =BIN2DEC( “0000000010” )
4 =BIN2DEC( “1111111110” )
5 =BIN2DEC( “110” )
 Results:
A B
1 2   Result is   1*2 + 0
2 3   Result is   1*2 + 1
3 2   Result is   1*2
4 -2   Result is   -2^9 + 2^8 + 2^7 + … + 2 + 0
5 6   Result is   2^2 + 2 + 0

 

 

Bin2Dec Function Common Errors

If you get an error from your Excel Bin2Dec function this is likely to be one of the following :

#NUM! Occurs if the supplied number argument is not recognised as a binary number, or contains more than 10 characters
#NAME? Occurs when Analysis ToolPak add-in is not enabled in your Excel.

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