Skip to main content

Excel DEC2BIN Function

doc stdev function 1

If you want to follow along with this tutorial, please download the example spreadsheet.

doc stdev function 1


The Excel DEC2BIN function converts a decimal number to a binary number.

Syntax and arguments

Formula syntax

DEC2BIN(number, [places])


  • Number: Required, the decimal integer number that needed to be converted to a binary number. If the argument number is a decimal number, it will be truncated to an integer.
  • Places: Optional, the number that specifies the number of characters of the result. If it is greater than the minimum, the binary number will be padded out using leading zeros, such as DEC2BIN(1,5) returns 00001. If it is omitted, DEC2BIN used the minimum number of characters necessary. If the argument number is negative, the places value will be ignored by DEC2BIN function, and returns a 10-character binary number in which the most significant bit is the sign bit, the remaining 9 bits are magnitude bit. If argument places is a decimal number, it will be truncated to an integer.

Return Value

The DEC2BIN function returns a binary number.


1. Return #NUM! error if one of below states occurs:

  • Argument number is > -512 or < 511;
  • Argument places is provided not enough for the argument number, such as DEC2BIN(10,2);
  • Argument places is < = 0.

2. Return #VALUE! error if any arguments are non-numeric values.


Excel 2003 and later

Usage and Examples

Example: Basic Usage

Decimal numbers and places are listed in range B5:B11, to get the corresponding binary numbers based on the places in C5:C11, please copy or enter the below formula to the next cell of the range:


Press Enter key and drag the autofill handle down to get all binary numbers.

doc stdev function 1

If you just use the formula once, you also can directly type arguments in the formula:


Relative Functions:

  • Excel STDEV Function
    The Excel STDEV function returns standard deviation based on a given sample of data.

  • Excel STDEV.S Function
    The Excel STDEV.S function returns standard deviation based on a given sample of data.

  • Excel STDEVP Function
    The Excel STDEVP function returns standard deviation based on the entire population.

The Best Office Productivity Tools

Office Tab - Enable Tabbed Reading and Editing in Microsoft Office (include Excel)

  • One second to switch between dozens of open documents!
  • Reduce hundreds of mouse clicks for you every day, say goodbye to mouse hand.
  • Increases your productivity by 50% when viewing and editing multiple documents.
  • Brings Efficient Tabs to Office (include Excel), Just Like Chrome, Edge and Firefox.
Comments (0)
No ratings yet. Be the first to rate!
There are no comments posted here yet
Please leave your comments in English
Posting as Guest
Rate this post:
0   Characters
Suggested Locations