How to get your perfect belt size, the quick, no nonsense way. If you’re replacing an old belt or checking someone’s size for a Christmas gift, here’s the simplest way to get it right first time: While you’re wearing your favourite jeans or trousers, put on one of the belts you use currently. Fasten it where it feels comfortable and make a note of the hole you’re using. Take the belt off, lay it flat, and measure from that hole to the point where the leather folds back through the buckle. That n