Your belt size is not your pant size, and it is not the length of the strap. It is the distance from the buckle fold to the hole you actually fasten — for most people that lands at your trouser waist plus about two inches. Get that one number right and a vegetable-tanned belt fastens on the middle hole, leaves room on either side, and never needs to be returned.
That two-inch gap trips up more buyers than any other detail. A belt wraps around your waistband, your shirt, and the bunched fabric of your trousers, so it always reads larger than the bare-skin number a tailor would quote you. Brands then size the belt to the middle of five holes, which adds another layer of arithmetic. Below is the method we give every customer before they order, the chart that converts between systems, and the four mistakes that put a belt back in the post.
What is my belt size, exactly?
Belt size is the measured distance from the fold of leather at the buckle to the centre hole of the strap, recorded to the nearest quarter inch. It is not the overall length of the belt, and it does not include the buckle. A belt labelled “36” should fasten comfortably on its middle hole at a 36-inch working point, with two holes of slack on the loose side and two on the tight side.
This definition matters because the same physical belt can be described three different ways. Measured tip to tip it might read 44 inches. Measured from the buckle fold to the far tip it might read 41. Measured the correct way — buckle fold to centre hole — it reads 36, and only that last number tells you whether it will fit. When a maker states a size, they mean the centre-hole figure (Custom Leather Belts). When you measure your own belt, you have to measure it the same way or the comparison is meaningless.
Method 1: measure a belt you already own (most accurate)
The single most reliable way to find your size is to measure a belt that already fits you well. Pant sizing drifts by two or three inches between brands, and people wear their trousers at different heights, so a belt you have proven on your own body beats any conversion from a label.
- Pick the belt you reach for most, and the hole you actually use. Not a belt that is too tight, not one you fasten on the last hole in desperation. The everyday one.
- Lay it flat on a table, face down. Pull it straight so there is no curl left from rolling it up.
- Find the buckle fold. This is the crease where the leather wraps around the buckle bar. Do not start at the buckle’s metal edge, and never include the buckle in the measurement.
- Measure from that fold to the hole you fasten most often. Run a flexible tape along the centre of the strap. That distance, to the nearest quarter inch, is your belt size (Proper Cloth).
- Round to the nearest even number for whole-inch sizing. If you measure 35.5, order a 36. Most leather belts are produced in even sizes — 30, 32, 34, 36, 38 — because holes sit an inch apart and even numbering keeps the centre hole on a round figure.
If your favourite belt has stretched or you fasten it on the tightest hole, add an inch before you round; a worn belt under-reports the size you should buy next. Measure to the quarter inch, not the nearest whole inch — half an inch is a full half-hole of error, enough to push the fastening point off-centre.
Method 2: measure your waist (when you have no belt to copy)
If you have no belt worth copying, measure your true waist where the belt will sit, then add two inches. The added inches account for the waistband, the shirt tucked beneath it, and the slack that puts you on the middle hole rather than the first.
- Wear the trousers you would wear with the belt. Mid-rise chinos and low-rise jeans put the belt at different circumferences; measure for the pair you actually wear.
- Thread a soft tape through the belt loops at the height the belt will sit, all the way around.
- Pull it snug but not tight — you should be able to slip a finger under it. Read the number to the nearest quarter inch.
- Add two inches. A 34-inch waist reading becomes a 36-inch belt (Torino Leather Company).
This is the same logic behind the well-worn shortcut of taking your pant size and adding two. The shortcut works often enough to be useful, but it inherits every inaccuracy in your trouser label. A pair of jeans marked 34 can measure anywhere from 33 to 37 at the waistband depending on the brand and how many times it has been washed. Measure the body, not the tag, and the plus-two rule becomes reliable instead of approximate.
The belt size chart
Use this to convert between the systems you will see on labels. Belt sizes are quoted in US inches, European centimetres, or letter sizes, and a single brand may use any of the three. The inch figure is the centre-hole measurement; the waist column is the bare trouser waist that maps to it.
| Trouser waist (in) | Belt size (US in) | EU size (cm) | Letter size |
|---|---|---|---|
| 26 | 28 | 70 | XS |
| 28 | 30 | 75 | S |
| 30 | 32 | 80 | S |
| 32 | 34 | 85 | M |
| 34 | 36 | 90 | M |
| 36 | 38 | 95 | L |
| 38 | 40 | 100 | L |
| 40 | 42 | 105 | XL |
| 42 | 44 | 110 | XL |
| 44 | 46 | 115 | XXL |
Two notes on reading the chart. The EU figure is the belt size, not the waist — a European 90 equals a US 36 and lands on a 34-inch waist (Leather Italiano). Letter sizes are the bluntest system because each letter covers a four-inch span; an L on one brand can be a 38 belt and on another a 40. When a maker offers numeric inches, take them over a letter every time.
Why the centre hole, and how the five holes work
Belts are sized to the middle of five holes because that position gives you two inches of give in both directions. Standard leather belts carry five holes punched an inch apart, which is a four-inch total adjustment range (Elliot Rhodes). Fasten on the centre hole and you can move two holes tighter or two holes looser as the day and the season ask.
That buffer is not vanity sizing. Your waist circumference naturally swings half an inch to a full inch across a single day — after a meal, with water retention, between morning and evening. Anchoring your everyday fit on the middle hole means a large lunch moves you out one hole rather than off the belt entirely. It also means a belt bought at the right size stays usable through the ordinary five-or-six-pound fluctuations of a year, which is part of why a well-sized full-grain belt lasts a decade rather than a season.
If you already know you are mid-cycle on a diet, or your weight tends to move in one direction, you can buy to the hole you expect to settle on rather than the one you wear today. Tell us in the order note and we will punch accordingly. A vegetable-tanned strap can also be re-punched later — adding a hole to a 4 to 5 mm bridle belt is a five-minute job for any cobbler, and one reason we cut belts longer at the tip than the last hole, leaving room to extend.
The four mistakes that cause returns
Most returned belts come back for one of four reasons, and all four are avoidable with the methods above.
Measuring the belt tip to tip. This is the costliest error. The full strap, buckle to far tip, runs 8 to 12 inches longer than your true size (Torino Leather Company). Order off a tip-to-tip number and you will receive a belt two or three sizes too big, with the tip flapping past the first keeper loop. Always measure buckle fold to centre hole.
Ordering your pant size instead of pant size plus two. A 36 belt on a 36-inch waistband fastens on the tightest hole with the tip barely reaching the loop. One holiday dinner and it does not close at all. The two-inch addition is what puts you on the middle hole with room to move.
Buying short because it “technically closes.” A belt that only fastens on the loosest hole has no slack and looks wrong — too little tail past the buckle. You want the tip to pass the keeper and reach toward the first belt loop on your trousers. If you are between sizes, size up: an inch of extra tail is invisible, an inch too short is unwearable.
Measuring over a bulky waistband or none at all. Measure for the trousers you will actually wear the belt with, threaded through the loops. A waist taken over a suit, then a belt worn with jeans, will read two systems apart. Match the measurement to the use.
A small honest caveat on women’s belts: the same buckle-fold-to-centre-hole method applies, but waist-belts worn high at the natural waist and hip-belts worn low need separate measurements taken at the height each will sit. The plus-two rule is built around trouser belts threaded through loops; for a free-standing waist belt, measure the actual circumference where it will rest and skip the addition.
A quick worked example
Say you measure your favourite jeans belt from the buckle fold to the hole you use and get 35.25 inches. Round to the nearest even size: that is a 36. Cross-check against your body — your trouser waist measures 33.5, plus two is 35.5, which also rounds to a 36. The two methods agree within a quarter inch, so a 36 is correct, and it will fasten on the middle hole. If the two methods had disagreed by more than an inch, the belt measurement wins, because it is the one proven on your body.
For the belts these numbers apply to, see the collection; for how a 4 to 5 mm full-grain strap is built to last and to be re-punched, see our materials and the 10-year care guide.
Frequently asked questions
Is my belt size the same as my pant size? No. Belt size is roughly your trouser waist plus two inches, because the belt wraps over your waistband and shirt and is sized to the middle of five holes. A 34-inch waist takes a 36 belt.
Do I include the buckle when I measure a belt? No. Measure from the fold of leather at the buckle bar to the hole you fasten most often. The buckle and the strap beyond the last hole are not part of your size.
What if I’m between two sizes? Size up. The extra inch shows only as a slightly longer tail past the buckle, which is normal. A belt that runs short fastens on the last hole with no room to adjust and is effectively unwearable after a single large meal.
Why is the middle hole the target fit? Five holes punched an inch apart give a four-inch adjustment range. Fastening on the centre leaves two holes of give in each direction, which covers the half-inch-to-inch your waist swings across a day and the ordinary weight changes of a year.
How do European and letter sizes convert? A European 90 equals a US 36 belt; subtract roughly 50 from the cm figure to estimate the US inch size. Letter sizes are broad — a Medium spans about 32 to 36 — so choose a numeric inch size whenever the option exists.
Can a leather belt be re-punched if my size changes? Yes. Adding a hole to a full-grain vegetable-tanned strap takes any cobbler a few minutes, and we cut our belts with extra length past the last hole so the strap can be extended rather than replaced.
Published 6 June 2026. Last updated 6 June 2026 by Nicholas Glazer.