Convert decimal MAC address into hexadecimal MAC address

问题

I have been searching for a method to convert a decimal MAC address into a hex one.

So for example 170.187.204.0.17.34 to AA:BB:CC:00:11:22.

Credits goes to Convert HEX to Decimal value? w/ an example.

I put my decimal value into columnA (starting A2) and the hexadecimal equivalent should go into columnB (starting B2).

回答1:

With 170.187.204.0.17.34 in A1, apply Text to Columns with . as the delimiter. In A2 copied across to F2:

=DEC2HEX(A1)

in G2: =A2&":"&B2&":"&C2&":"&D2&":"&E2&":"&F2

Or, in B2 and dealing with hex for 0:

=SUBSTITUTE(DEC2HEX(MID(A2,1,FIND(".",A2)-1))&":"&DEC2HEX(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),1,FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))-1))&":"&DEC2HEX(MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),1,FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))-1))&":"&DEC2HEX(MID(MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)),1,FIND(".",MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)))-1))&":"&DEC2HEX(MID(MID(MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)),FIND(".",MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)))+1,LEN(A2)),1,FIND(".",MID(MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)),FIND(".",MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)))+1,LEN(A2)))-1))&":"&DEC2HEX(MID(MID(MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)),FIND(".",MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)))+1,LEN(A2)),FIND(".",MID(MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)),FIND(".",MID(MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)),FIND(".",MID(MID(A2,FIND(".",A2)+1,LEN($A2)),FIND(".",MID(A2,FIND(".",A2)+1,LEN($A2)))+1,LEN(A2)))+1,LEN(A2)))+1,LEN(A2)))+1,LEN(A2))),":0:",":00:")

回答2:

As much as I enjoyed reading through @pnuts ' code, this may be a simpler solution:

=DEC2HEX(MID(A2,1,3),2)&":"&
 DEC2HEX(MID(A2,FIND("^",SUBSTITUTE(A2,".","^",1))+1,3),2)&":"&
 DEC2HEX(MID(A2,FIND("^",SUBSTITUTE(A2,".","^",2))+1,3),2)&":"&
 DEC2HEX(MID(A2,FIND("^",SUBSTITUTE(A2,".","^",3))+1,3),2)&":"&
 DEC2HEX(MID(A2,FIND("^",SUBSTITUTE(A2,".","^",4))+1,3),2)&":"&
 DEC2HEX(MID(A2,FIND("^",SUBSTITUTE(A2,".","^",5))+1,3),2)

Line one takes advantage of the fact that DEC2HEX truncates its parameter:

Given 170.187.204.0.17.34, MID returns 170, which is already an integer.
Given 1.9.1.1.1.1, MID returns 1.9, which DEC2HEX truncates to 1.

Lines two through six SUBSTITUTE the nth "." with "^" and then FIND that character, returning the next 3 characters. Given 170.187.204.0.17.34, these MID functions return:

These are then fed to DEC2HEX.

And we simply concatenate everything with colons.

Output: AA:BB:CC:00:11:22

来源：https://stackoverflow.com/questions/25814863/convert-decimal-mac-address-into-hexadecimal-mac-address

标签

excel

hex

excel-formula

decimal