One question we get a lot here is what size belt to buy. Unfortunately this is one question that is tough to give a definitive answer on. First off fit on belts is subjective as people like to have their belt longer or shorter and also based on what you are wearing the belt with. If you just wear light weight slacks and shirts you’ll need a smaller belt than if you wear heavy jeans and thick shirts. Also if you use your belt for carrying items you may need some extra length also.
If you are trying to figure out how to properly fit your belt and buy the right size there are a few guidelines that will help you get the right size. The most general rule is to buy the belt one size bigger than your pant size you wear. In 90% of the cases this will be the correct size. Take into account if you will be carrying items on the belt or if you will be wearing thicker pants or shirts and you may need to go up another size.
One thing you can’t do is measure an old belt or go off an old belts size. If you’ve had the belt awhile and have put on some weight then they can gradually stretch with you over time and can stretch as much as 1-2 sizes. Also be cautious of reviews customers leave about fit as again it is subjective and your not sure how they are using the belt.
So follow these guidelines and you should be able to get a good fit on your belt and avoid an exchange.