To get the best fit when buying a belt on-line, it is important to select the correct size based upon an accurate measurement. Your belt size is not the same as your pants or waist size. Because your belt goes around you and your pants, your tucked in shirt, and your underwear, your belt size is usually one or two inches larger than your pants or waist size.
Because sizing varies with different methods, it is recommended you don't order the size taken from another belt without measuring it first.
What we are trying to determine here is your WAIST SIZE, i.e. the size to use for length when placing your order. The BELT LENGTH from end to end is not considered for measurement purposes because it also includes the width of the buckle itself plus few additional inches of leather that every belt must have to the left of the buckle once it’s fastened: from the last (widest) punched hole to the very end of the strap tip, a belt should measures 10cm / 4 inches for standard belts with five holes and 12,5cm / 5 inches for those with three holes (Hermes style) respectively. Enough to tuck under your first belt loop, or the loop of the belt if it has one, is a good rule of thumb.
When it comes to measuring your waist size, there are different options according to your wearing habits and belt/buckle types.
From this center hole most of our belts (except for Hermes style straps with 3 total holes) have two punched holes longer (at one inch increments) and two punched holes shorter (at one inch increments); this arrangement gives you the widest relevant range in adjusting your belt.
By using this method, you can be 100% confident that your new belt will fit you perfectly. Besides, in most cases it will let you save your old buckle (unless sewn on the strap) and use it on your new belt (if the buckle is detachable).
Making Sure you are NOT wearing a belt while doing this, put a measuring tape through your pant/skirt loops and wrap it around your waist. Because you don’t want your new belt to interfere with your breath, inhale deeply and then measure your girth. Where the tape end meets the rest of the band, you will read your bodily circumference. That will be the size you need to provide when ordering your new belt.
Tape measure your waistline according to where you intend to wear the belt ( waist, hips or somewhere in between ):
For more accurate sizing, we strongly suggest you to take your measurements WITHOUT wearing garments. The size to use for length when placing your belt order will equal your bodily circumference PLUS the girth of your underwear, shirts, pants or skirt (usually 1 to 2 inches).
(for MEN ONLY!! – LADIES: please disregard this section and follow directions on Option 2 or 3)
Based on your pants size, pick your belts one or two sizes larger to get a good fit: if you wear a 36” trouser waist, a belt labeled 38"-40” will probably be in the right neighborhood. This works some of the times, but it is not the most accurate way.
Worldwide How to Measure Your Belt Size v1.0
Guide By La Petite Croisette™