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Convert decimal number to IP address

Author Sun Last modified

If you have a string of decimal numbers such as 192168421 that you need to convert to an IP address as192.168.42.1, how can you quickly solve this job with an Excel formula？
doc decimal to ip 1

Convert decimal number to IP address with formula

Formula syntax

=MID(number,1,num_of_digit)&"."&MID(number,start_position2,num_of_digit)&"."& MID
(number,start_position3,num_of_digit)&"."&MID(number,start_position4,num_of_digit)

Arguments

  • Number: Required, the decimal number that you want to convert to an IP address.
  • 1: Required, it indicates to extract start from the first letter.
  • Num_of_digit: Required, the number of digits needed to be extracted.
  • Start_position2: Required, for the second part of the IP address, the position you want to extract numbers from.
  • Start_position3: Required, for the third part of the IP address, the position you want to extract numbers from.
  • Start_position4: Required, for the fourth part of the IP address, the position you want to extract numbers from.

Here are some examples in below table for you better understanding the formula.

Decimal IP Address
 Formula
10255211 10.255.22.11 =MID(C2,1,2)&"."&MID(C2,3,3)&"."&MID(C2,6,2)&"."&MID(C2,8,1)
172161134 172.16.11.34 =MID(C3,1,3)&"."&MID(C3,4,2)&"."&MID(C3,6,2)&"."&MID(C3,8,2)
1921681225 192.168.1.225 =MID(C4,1,3)&"."&MID(C4,4,3)&"."&MID(C4,7,1)&"."&MID(C4,8,3)
17211255255 172.11.255.255 =MID(C5,1,3)&"."&MID(C5,4,2)&"."&MID(C5,6,3)&"."&MID(C5,9,3)

Sample File

doc sampleClick to download sample file

Relative Functions

  • Excel DECIMAL function
    The DECIMAL function converts a text representation of a number in a base into its equivalent decimal number. Take a instance, 11 is a text representation of 3 in base 2, using the formula =DECIMAL(11,2) convert 11 into decimal number 3.

Relative Formulas

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