What Size Belt Should I Buy?

Buy a belt two inches larger than your trouser waist. A 34 waist takes a 36 belt. That rule is right most of the time, and it works because a belt size is measured from the buckle fold to the middle hole, not from tip to tail. A 36 belt is closer to 40 inches of actual strap.

The rule breaks when your trousers lie about their waist, and plenty of them do. So measure. Thread a soft tape through the belt loops of the trousers you actually wear, pull it snug, and read the number. Round up to the next even size. That is your belt size, and it beats the label on the waistband every time.

Key takeaways

• Trouser waist plus two inches. A 34 waist takes a 36 belt.
• Belt size is the distance from the buckle fold to the middle hole, not the length of the strap.
• If you are unsure, measure through the belt loops. Waistband labels are not reliable.
• Between sizes, size up. A long belt can be shortened. A short one cannot be lengthened.
• Past 46, size runs are style by style rather than line wide.

Why is a belt two inches bigger than your pants?

Because the belt goes around the trousers, not around you. Those two inches cover the fabric, the waistband, a tucked shirt, and the fact that the strap has to reach past the buckle and lie flat under a loop.

Buy your exact waist size and the pin lands in the first hole with nothing left over. It looks borrowed. Two inches up and the pin sits in the middle hole with a few inches of tail, which is what a belt is supposed to look like.

What does a belt size actually measure?

The number on the box is the distance from the buckle fold, the crease where the leather wraps the buckle, to the middle hole. It is not the length of the leather, which is what confuses people who check a belt against a tape measure and decide the brand got it wrong.

A strap typically carries five holes an inch apart, so a 36 fastens at roughly 34 at the tightest and 38 at the loosest. That is your working range, and it is why one size off is survivable and two sizes off is not.

How do you measure a belt you already own?

Lay it flat, face down. Start the tape at the fold where the leather turns around the buckle. Do not include the buckle. Measure to the hole you actually use, not the tip and not the last hole. That number is your size, rounded up if it lands odd. One caveat: if the hole you use is the first or the last one, that belt was the wrong size to begin with and you should not size off it.

What if you are between sizes?

Size up. Any leather shop can punch another hole or cut the strap down and reset the buckle for very little money. Nobody can add leather back.

Fit beats brand here. A belt two inches too long is an inconvenience. Two inches too short is a gift for somebody else.

Does the answer change for jeans or dress trousers?

A little, and it is worth knowing which direction. Low rise jeans sit below your natural waist, where men are usually wider, and denim is thick. Add another inch or two if the belt is going to live in jeans. Dress trousers sit higher and use thinner cloth, so the plain two inch rule holds. Buying one belt for both means sizing for the jeans and accepting a longer tail on the dress trousers. Width is a separate decision, covered in the guide to buying a men's leather belt.

What if your size is 48 or above?

The math is identical. The list of belts is shorter, and most of the category stops at 44.

Select styles here are cut 48 through 60, spanning the same leathers as the rest of the line: aniline, embossed calfskin, pebble grained and burnished calf, kipskin, soft deertan glove, braided leather and linen, woven cotton, woven stretch, and caiman. Extended sizing is style by style rather than something every belt offers, so check the style rather than assuming the size run. Everything cut long sits in Extended Sizes.

Where to start once you have the number

Belts run $65 to $575, median $120. For suits and tailored trousers, start in Dress Belts. For denim and chinos, Casual Belts. Every product page lists the sizes that style is cut in, so you can check before you decide rather than after it ships.

Common questions

What size belt do I need for a 34 inch waist?

A 36. If your 34 trousers actually measure 36 at the waistband, which is common, buy a 38.

Do leather belts stretch?

Smooth leather relaxes slightly in the first few weeks and then stops. Woven and stretch belts have give built in by design. Neither moves enough to justify buying a size down. How a belt ages after that is covered in making a leather belt last ten years.

How do I buy a belt for someone whose size I do not know?

Find a belt he already wears and measure it from the buckle fold to the worn hole. Failing that, buy something that does not need a size. A card case or a money clip sidesteps the problem, and those sit in Gifts Under $100.

Get the number right first

Everything else about a belt is a preference. The size is not. Measure once, write it down, and shop the full belt collection knowing the thing you buy will fasten where it should.