Determine belt length

In our shop, belts are measured and made based on the waist size. Determining this is easy: simply take a tape measure and place it around your waist like a belt (just make sure it's at the right height). If you don't have a tape measure handy, use a piece of string and measure it afterwards.

If you have a well-fitting belt, it's even easier and more accurate: Measure the distance from the tip of the buckle's prong to your "favorite hole," the one you use most often (you can easily tell by the wear on the hole on a used belt).

It's not about the highest precision :-)