I custom make all belts so my measurement system is a little different than others.
I generally measure from the end of the belt buckle to the middle hole of the tip of the belt.
We use 5 holes so the center whole is the one you should use. The best way to measure is to take a belt that fits you currently and measure as I have described, using the hole that you use the most. Because our belts are custom made we can make any length even or odd numbers. So if you order a say 36-38 inch belt we would make a 38" to the center hole unless you specify otherwise such as a 37" or 36". Please add those in the comments section of your order. If you have any questions please email us at firstname.lastname@example.org or call 918-525-2112.