Cap Size for 60–65 cm Heads: EU, US and UK Conversion
The world is full of wonder — and one of its small wonders is finally finding a cap that fits. If your head measures 60, 62 or 63 centimetres, you know that feeling in a way most people never will.
Every maker measures their own way. One brand's L is another brand's M, XL on an American site rarely matches XL on a European label, and 7 3/4 tells you nothing without a conversion. This guide turns centimetres into European, American and British sizes, explains what to actually look for, and shows you where the traps are — the ones that stop most caps from fitting bigger heads.
Why head circumference in centimetres always wins
The simplest rule to remember: trust centimetres, not letters. L and XL don't mean the same thing across two different brands. One brand starts XL at 59 cm, another at 61, and a third doesn't even offer XL. A letter is shorthand. A number is a fact.
Between 60 and 65 cm, every single centimetre matters. One more or one less isn't a question of style — it's the difference between a cap you take off after an hour and a cap you forget you're wearing. A pinched band, marks on your forehead, a crown that slides around — nearly always the wrong number, not the wrong style.
Most global brands cap their XL at 59 or 60 cm, even when the label proudly says extra large. For anyone above 60 cm, that means one of two things: either the snap won't close, or the crown sits on top of your head like a small papal cover. Measure your head once, properly, and you're done wondering what one size fits all is really supposed to mean.
One more thing worth saying out loud. XXL on caps is rare. Most brands don't think it's worth producing, so anyone with a head over 63 cm is quietly shut out at the front door of the shop. We've been through that ourselves, which is why anything above 63 cm has been part of our XL range from the start.
Cap size chart: cm to EU, US and UK
European sizing goes straight by centimetres. American sizing uses inch fractions (7, 7 1/8, 7 1/4 and up). British sizing tends to sit a fraction below the American number for the same head. The chart below covers the full range, but the interesting rows are at the bottom — from 60 cm upwards.
| Circumference (cm) | EU | US | UK |
|---|---|---|---|
| 54 | 54 | 6 3/4 | 6 5/8 |
| 56 | 56 | 7 | 6 7/8 |
| 58 | 58 | 7 1/4 | 7 1/8 |
| 59 | 59 | 7 3/8 | 7 1/4 |
| 60 | 60 | 7 1/2 | 7 3/8 |
| 61 | 61 | 7 5/8 | 7 1/2 |
| 62 | 62 | 7 3/4 | 7 5/8 |
| 63 | 63 | 7 7/8 | 7 3/4 |
| 64 | 64 | 8 | 7 7/8 |
| 65 | 65 | 8 1/8 | 8 |
A few numbers worth memorising: 60 cm is roughly US 7 1/2, 62 cm is US 7 3/4, and 63 cm is US 7 7/8. Above 63 cm, most makers' charts simply stop — which is exactly why the XXL shelf is so thin across the market.
A quick word on American sizing. Those fractions come from an old hatter's convention where size was calculated from the diameter of the head in inches, not the circumference. So 7 3/4 isn't a 7 3/4-inch circumference — it's a diameter, and the circumference in centimetres is π times larger. Luckily the chart handles the maths for you. Just read across from the left-hand column.
Cap 62 cm and 63 cm: what XL really means on a bigger head
When you see an XL cap in a high-street chain, it usually means a circumference of 58 to 60 cm. For a 62 or 63 cm head, that simply isn't enough. The closure barely fastens, the crown perches on top, and half an hour in your forehead starts to ache.
Our XL caps are built around 61 cm and sit comfortably anywhere from 60 to 63 cm. Deeper crown, wider inner band, longer adjustment strap — so the buckle, snapback or velcro actually closes where other brands run out. The same proportions carry over to the classic black trucker in XL, which is the one I wear most myself.
To picture what those two extra centimetres do in practice — it's the difference between a cap that settles neatly just above the brow and one that stays perched above the forehead like a little crown. Customers write in again and again to say the cap finally behaves like a proper piece of clothing, not a half-measure.
For heads between 62 and 65 cm, we make XXL. It's the only size in our range that goes above 63 cm, and honestly, there aren't many of those out there. Head size should never limit your choices — and it doesn't.
Gorra, casquette, pet, keps: same head, different language
Ever shop from foreign sites? A small glossary helps. A cap is a gorra in Spanish, a casquette in French, a pet in Dutch and a keps in Swedish. But the number after the word is the same everywhere. A gorra 62 cm, casquette 62 cm, pet 62 cm and keps 63 cm are all head circumferences in centimetres — just in a different language.
In German a cap is a Kappe, in Italian a cappellino, in Polish a czapka z daszkiem. All these markets use EU sizing in centimetres, so the number off your tape measure drops straight into the site without conversion. On British and American shops, expect product descriptions to keep pulling you into fractions.
Where markets really differ is in how makers describe the size. European shops usually quote circumference in cm, American ones almost always use inch fractions, and British sites tend to borrow the American convention, just a fraction lower for the same head. On our XL snapback caps you'll always find both — so you never have to hunt for the conversion.
When you're buying abroad, stick to centimetres. Don't trust XL, XXL, or the LG shorthand. For one maker it's 58 cm, for another it's 62. The number is the only thing that won't cheat you.
How to measure your head properly (and why most people get it wrong)
You'll want a soft tailor's tape. If you don't have one at home, take a piece of string, wrap it around your head once, mark the overlap, and hold it against a ruler. Same result, a few seconds slower.
Run the tape about a centimetre above your ears and across the widest point at the back of your head — exactly where the band of a cap naturally sits. It should be firm, not tight. One finger has to slide underneath. And keep it level, not on an angle. A tilted line quietly adds a couple of centimetres and throws the whole thing off.
A practical tip: measure with dry hair, worn the way you'd normally wear it under a cap. A bun, a ponytail or wet hair add two or three centimetres of noise — and that's exactly the gap between L and XL.
Measure twice and take the larger number. Heads swell slightly through the day, and a few millimetres of room beats a tight forehead at five in the afternoon. If you land right between two sizes, always take the bigger one. There's a detailed walk-through with photos on our size guide page.
What to do if the cap doesn't fit when it arrives
The first test is simple. A well-fitting cap is firm, not tight. One finger should slip between your forehead and the band, and there should be no red mark when you take it off. If it pinches, it's too small. If it floats, it's too big.
Try it on at home, on dry hair, indoors. You don't need to tear off the labels — a few minutes on your head doesn't stop a return. You have 14 days from delivery. Email info@headofwonder.com and we'll sort it out. If you're unsure between two sizes before you order, just write to us or take a look at our help page — no reason to send it back if we can save you the trip.
Returns don't need paperwork gymnastics. As long as the cap hasn't been worn out in the world, you're fine. We refund the same way you paid, as soon as the parcel arrives and we've checked it.
No compromises. If something doesn't fit, we handle it quickly and personally — and in almost every case you leave happier than you arrived. If you're looking for a gentle start in XL, try the black-and-white XL baseball cap, which fits most heads in the 60–63 range.
You'll find the full range of XL and XXL caps for 60–65 cm heads in our shop. If you're not sure about your size, write to me at info@headofwonder.com. I answer personally and I'm glad to help — I've lived with this problem for fifteen years.