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ExcelDec2HexFunction
The Excel DEC2HEX Function
Related Function:
Hex2Dec 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 Dec2Hex function converts a decimal number into a Hexadecimal (Base 16) number.
The format of the function is :
DEC2HEX( number, places )
Where the number argument is the decimal number that is to be converted to hexadecimal, and the
places argument is the number of characters that you want the returned hexadecimal number to have.
If this is greater than the minimum, the hexadecimal number will be padded out using leading zeros.
If the places argument is omitted, then by default, the minimum number of places is used in
the returned hexadecimal number.
+ Display Hexadecimal Summary:
Hexadecimal
The Hexadecimal
(Base 16) Numeral System uses the digits 09 and the characters af.
The following table shows the first 32 hexadecimal values, along with the equivalent decimal values:
Hexadecimal 
1 
2 
3 
4 
5 
6 
7 
8 
9 
a 
b 
c 
d 
e 
f 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
1a 
1b 
1c 
1d 
1e 
1f 
20 
Decimal 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
32 
For further information on the hexadecimal numeral system, see the
Wikipedia Hexadecimal Page
Dec2Hex Function Examples
The following spreadsheet shows examples of the Excel Dec2Hex function. The format of the functions
are shown in the spreadsheet on the left and the results are shown in the spreadsheet on the right.
Formulas:

A 
1 
=DEC2HEX( 10 ) 
2 
=DEC2HEX( 31 ) 
3 
=DEC2HEX( 16, 10 ) 
4 
=DEC2HEX( 16 ) 
5 
=DEC2HEX( 273 ) 

Results:

A 
B 
1 
A 

2 
1F 
Result is 1*16 + 15 
3 
0000000010 
Result is 1*16 + 0 
4 
FFFFFFFFF0 
Result is 16^9 + 15*16^8 + 15*16^7 + ... + 15*16 + 0 
5 
111 
Result is 1*16^2 + 1*16 + 1 

Note that, in the above example spreadsheet, the negative hexadecimal number in cell A4 is represented by
two's complement notation.
Further information and examples of the Excel Dec2Hex function can be found on the
Microsoft Office website.
Dec2Hex Function Common Errors
If you get an error from your Excel Dec2Hex function this is likely to be one of the following :
Common Errors
#VALUE!



Occurs if either the supplied number argument or the supplied [places] argument is not numeric.

#NUM!



Occurs if the supplied [places] argument ≤ 0.

#NAME?



Occurs when Analysis ToolPak addin is not enabled in your Excel.
You will need to enable the addin if you want to use the Excel engineering functions.
+ Show How to Do This in Excel 2003:
 From the Tools dropdown menu, select the option AddIns ...
 An 'AddIns' window will pop up. From this, select the option Analysis ToolPak and click OK
+ Show How to Do This in Excel 2007:
 Click the Microsoft button on the top left of your spreadsheet and select
the Excel Options button
 From the menu on the left hand side, select AddIns
 In the 'Manage:' box, select Excel Addins and click Go...
 An 'AddIns' window will pop up. From this, select the option Analysis ToolPak and click OK
+ Show How to Do This in Excel 2010:
 Click the File tab (top left of your spreadsheet) and select Options
 From the menu on the left hand side, select AddIns
 If the window that pops up doesn't show the 'Addins' list, use the 'Manage:'
dropdown menu (at the bottom of the window) to select Excel Addins. Click Go...
 From the 'AddIns' window, select the option Analysis ToolPak and click OK
