OCT2BIN 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 Oct2Bin function converts an Octal (Base 8) number into a Binary (Base 2) number.

Syntax: OCT2BIN( number, [places] )

Where the function arguments are as follows:

number The octal number that is to be converted to binary.
[places] An optional argument, which specifies the number of characters that you want the returned binary number to have.

If this is greater than the minimum, the binary number will be padded out using leading zeros.

If omitted, the returned binary uses the minimum number of places.

Note that the number argument must be no 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.


Oct2Bin Function Examples

The following spreadsheet shows examples of the Excel Oct2Bin 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.

1 =OCT2BIN( “5” )
2 =OCT2BIN( “0000000001” )
3 =OCT2BIN( “2”, 10 )
4 =OCT2BIN( “7777777770” )
5 =OCT2BIN( “16” )
1 101
2 1
3 0000000010
4 1111111000
5 1110


Oct2Bin Function Errors

If you get an error from your Excel Oct2Bin function this is likely to be one of the following :

#VALUE! Occurs if the supplied [places] argument is not recognised as a number
#NUM! Occurs if either:

the supplied number argument is not recognised as an octal number or contains more than 10 characters
the resulting binary number requires more places than is specified by the supplied [places] argument
the supplied [places] argument ≤ 0
#NAME? Occurs when Analysis ToolPak add-in is not enabled in your Excel.

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