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DEC2OCT function: Description, Usage, Syntax, Examples and Explanation

What is DEC2OCT function in Excel?

DEC2OCT function is one of Engineering functions in Microsoft Excel that converts a decimal number to octal.

Syntax of DEC2OCT function

DEC2OCT(number, [places])

The DEC2OCT function syntax has the following arguments:

  • Number: The decimal integer you want to convert. If number is negative, places is ignored and DEC2OCT returns a 10-character (30-bit) octal number in which the most significant bit is the sign bit. The remaining 29 bits are magnitude bits. Negative numbers are represented using two’s-complement notation.
  • Places(Optional):  The number of characters to use. If places is omitted, DEC2OCT uses the minimum number of characters necessary. Places is useful for padding the return value with leading 0s (zeros).

DEC2OCT formula explanation

  • If number < -536,870,912 or if number > 536,870,911, DEC2OCT returns the #NUM! error value.
  • If number is nonnumeric, DEC2OCT returns the #VALUE! error value.
  • If DEC2OCT requires more than places characters, it returns the #NUM! error value.
  • If places is not an integer, it is truncated.
  • If places is nonnumeric, DEC2OCT returns the #VALUE! error value.
  • If places is negative, DEC2OCT returns the #NUM! error value.

Example of DEC2OCT function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.

Formula Description Result
=DEC2OCT(58, 3) Converts decimal 58 to octal 072
=DEC2OCT(-100) Converts decimal to octal. 7777777634

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