# Thread: Conversion from HEX to DEC

1. ## Conversion from HEX to DEC

Just for those of you that don't know or that just need a little refresher like me

The simplest way to go from hex to dec is to go to binary first behold the table below!

HEX DEC BINARY
0 0 0000
1 1 0001
2 2 0010
3 3 0011
4 4 0100
5 5 0101
6 6 0110
7 7 0111
8 8 1000
9 9 1001
A 10 1010
B 11 1011
C 12 1100
D 13 1101
E 14 1110
F 15 1111

OH NO I stopped at 15 now what eh?

Ill show ya

Lets take the HEX number 1C8........

Ok, now well take that number and transfer it into binary

1 C 8

0001 1100 1000

Ok now the binary in Dec

0 0 0 1 1 1 0 0 1 0 0 0
^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
2048 1024 512 256 128 64 32 16 8 4 2 1

So if we add all those little ones and zero's up we get (drum roll please)

456 and if I put that into my little windows calc and convert it into hex I get 1C8

TA DA!

Thanks for reading I hope this can make things a little clearer for hex or worked as a nice refresher,

-=Legacy Boy=-
I am such a 733T H@XOR with my new puuter that I got for christmas!

2. There's an even easier way:
1C8 -> (1 x 16^2) + (12 x 16^1) + (8 x 16^0) = 456

Far simpler and less prone to errors.

3. Yea If you have a calculator at your exam, I had to work this crap out by hand it was just easyer for me to do it this way but thanks for the input,

LB

4. It's hardly difficult to do 16^2 - use long multiplication if you have to. I doubt that you'd have to convert more than 4 hex figures to decimal (e.g. FF6CA).

5. Acually I had to put mac address together and just random big numbers,
I did not have fun

LB,

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