I needed a belt so went out to get one. Hey: belts have sizes. I wasn’t aware of that. What size are you? The first thought was to take the belt with a size that matched the number of my jeans/waist size. Suddenly, I was reminded of a trick my dad taught us when we were younger:
Your waist’s circumference approximately equals the length of your arm. That’s approximately 2 times your lower arm (from hand to elbow). The length of the much needed belt is generally 2 times the length of your arm or, 3 times the length of your lower arm.
Punching a hole in a belt goes so much easier with a drill.