When it comes to popular methods, the standard would be the ‘size up’ technique. This is basically purchasing a belt an inch or two larger than your exact waist measurement. Take for instance; if your waist or trouser/pant size is 32, the ideal size of belt to purchase would likely be 34. Since we do not manufacture sizes in the odd range (27, 29, 31, etc.), you would need to opt for a belt two-inches larger. If however your waist size is in the odd range, you would then require to purchase a belt just a size up. For instance; a 32 size belt for a 32 inch waist.
The first step is to take accurate belt measurements. Use a belt that you wear regularly or often enough. The way to go about it is to take a measuring tape and begin at the part of the belt where the buckle is fixed. Extend the tape to the hole you usually close your belt at. This should be a good estimate of your waist size! All belt measurements are done from center or third hole to buckle. Center hole fitting allows for increased size flexibility.