Learning how to convert hexadecimals to decimals.

Hi all. I have done a search regarding this topic, but I haven't found anything... So if there is already an existing thread regarding this issue, my apologies, and please redirect me to such thread.

Well, I'd like to learn the basics about how conversion between decimals and hexadecimals work in Dragon Ball Xenoverse. How to convert a decimal number into hexadecimal... Example: 25 06 F0 3F = 1.87519

I open this thread so that this way we could learn how Z-souls, clothing stats, etc hexadecimal system works, in order to change them into the exact values that we want.

Here are a few presets that were shown in the Z-Souls thread.


By looking at the tables in the Z-Souls, clothing stats, etc. tables, I come to the conclusion that a stat is made by 4 digits, 00 00 00 00.
So what I'd like to learn, is how to convert numbers from one to another. To know if there is an specific table, or rules to follow in order to do such conversion.
I've searched for tutorials about how to convert decimals into hexadecimals, tried using windows hex calculator and other online websites, without any results.
It doesn't seem to be the same type of conversion, since whenever I try to do a convertion, it doesn't show me the same results as in the table shown here.
In those tables 1=1, 2=2, etc. When here, its a total different way, and I don't know what I'm missing to understand it.

I don't like maths at all, so I am kinda regretting doing this. And I wonder if I will be able to understand how it works if someone cares to explain how this conversion system works.
But I want to know how to edit stats properly, so knowing how hexadecimals work is part of the learning proccess, needed to understand how this works.

I think this is all I have to say for now. If someone has also another kind of questions/issues regarding about this system, they can post their questions here, so that other people can see and reply to them. I hope this will be a class/lesson we can all learn from, in one way or another. Thanks so much in advance.

Regards.