How to Measure Your Head for a Fitted Hat: Get It Right the First Time
Fitted caps have no adjustment, so the measurement is the whole order. We take it more carefully for that reason, and so should you.
Wrap a soft tape around your head a finger's width above the ears, across the middle of the forehead, level all the way round, snug but not compressing — then divide the result by 3.14 to get your approximate fitted size. A 22-inch head is a size 7. The care matters here in a way it doesn't on adjustable caps, where a quarter-inch error disappears into the closure.
- A finger's width above the ears, mid-forehead. That line is where the hat actually sits.
- Level all the way round. A tilted tape reads short.
- Circumference ÷. 3.14 = fitted size.
- Made in the USA, no minimums. One hat is a real order.
The Method
- Use a soft tape. A tailor's tape, or string or paper marked and measured against a ruler.
- Position a finger's width above the ears. Roughly where a cap's sweatband sits.
- Cross the middle of the forehead. Not at the hairline, not down on the brows.
- Keep it level. Check the back sits at the same height as the front.
- Snug, not tight. The tape should sit where the sweatband will, without compressing.
- Measure over the hair as you normally wear it.
- Read to the nearest eighth of an inch, which matters here more than on any other construction.
Take it three times and use the largest reading. Repeat measurements almost always vary slightly, and the largest is usually the one with the tape correctly level.
Our general method is at how to measure your head.
Measure three times and take the largest. Readings vary, and the short ones are usually a tilted tape rather than a genuinely smaller head.
Converting to a Fitted Size
| Inches | Centimeters | Fitted size |
|---|---|---|
| 21 1/4 | 54 | 6 3/4 |
| 21 5/8 | 55 | 6 7/8 |
| 22 | 56 | 7 |
| 22 3/8 | 57 | 7 1/8 |
| 22 3/4 | 58 | 7 1/4 |
| 23 1/8 | 59 | 7 3/8 |
| 23 1/2 | 60 | 7 1/2 |
| 23 7/8 | 61 | 7 5/8 |
| 24 1/4 | 62 | 7 3/4 |
Sizes advance in eighths, roughly three eighths of an inch of circumference per step.
The math behind it. Fitted sizes derive from head diameter rather than circumference, so dividing your measurement by pi gives the size directly. Our detail is at fitted hat sizes explained.
Why Precision Matters Here
On an adjustable cap, a quarter-inch measuring error vanishes into the closure. On a fitted cap it can be the difference between two sizes.
Sizes advance in eighths, which is about three eighths of an inch of circumference. That is a small enough step that a tilted tape or a tape pulled tight can shift you a full size.
Two errors account for most of it. A tilted tape reads short, producing a size too small — the most common mistake by a wide margin. And a compressed tape, pulled tight rather than sitting snug, also reads short.
Both err in the same direction, which is why the guidance is to take the largest of several readings rather than the average.
The two common measuring errors — a tilted tape and a tape pulled too tight — both read short. That is why fitted caps ordered from a self-measurement tend to arrive too small.
Between Two Sizes
Common, since eighths are a fine gradation, and the answer is consistent.
Size up. A slightly loose fitted cap settles with wear as the crown and sweatband relax; a slightly tight one presses at the sweatband and never becomes comfortable.
If you are consistently between sizes across multiple brands, that is a signal fitted may be the wrong construction. Stretch-fit covers a band rather than a point, and adjustable covers two and a half inches. Either solves the problem permanently.
Our comparison at fitted vs stretch-fit hats covers the alternative.
Round up when between fitted sizes. A loose fitted cap settles with wear; a tight one presses at the sweatband indefinitely and does not break in.
- A tilted tape. Reads short and produces a size too small.
- Pulling the tape tight. Also reads short, for the same reason.
- Measuring flat against the scalp. The hat sits over hair.
- Sizing down between sizes. Round up and let the crown give.
What the Measurement Does Not Capture
- Hair changes. A haircut, growing it out or wearing it differently all move effective circumference.
- Sweatband thickness. A padded band takes up internal space, so the same size fits smaller.
- Crown depth. A deeper crown sits further down and feels looser at the same measurement.
- Head shape. Round and oval heads of the same circumference fit a fitted cap differently.
- Shrinkage. Cotton moves permanently in heat, which on a fitted cap changes the size.
The hair point is worth planning around. If you are between hairstyles or expect to change, adjustable or stretch-fit accommodates it where fitted does not.
Measuring Someone Else
Different from measuring yourself, and easier in most respects.
Self-measurement has a built-in problem. You cannot see whether the tape is level at the back, which is the error that produces short readings. Having someone else take it removes that entirely.
Three things help when measuring another person. Stand behind rather than in front, which keeps the tape level and is less awkward. Ask them to look straight ahead, since tilting the head shifts the tape position. And say the number aloud and write it down immediately, because a measurement remembered is a measurement misremembered.
For a fitted team order, measuring people in pairs works well — each person measures the next, and the readings are more consistent than self-taken ones.
If a measurement is being reported to you remotely, ask for the number in centimeters. It is a finer gradation than inches and less prone to rounding, which matters when eighths decide the size.
Checking the Fit When It Arrives
A correctly sized fitted cap should sit with the sweatband resting evenly all the way round, the crown settled onto the head rather than perched, and no pressure points at the temples or forehead.
Marginally snug on day one is usually correct. A new cap relaxes slightly as the crown and sweatband settle, so a hat that feels close is generally right.
Pressure at the temples means too small. That does not resolve with wear.
Lifting at the back or perching means the crown is too shallow, which is a depth problem rather than a size one and going up will not fix it.
Our comparison at measuring beanie size covers the construction where precision matters least.
What We Tell Customers Who Ask
With no minimum order, ordering one hat to check the size before a larger fitted run costs one hat and removes the main risk of the whole construction.
Cold wash and air dry, without exception. Unwashed cotton can shrink close to half a size on first wetting, and there is no adjustment to absorb it.
Wool-blend fitted caps give slightly under tension and are more forgiving than stiff cotton at the same size. For anyone between sizes, that give can be enough.
For a fitted order we would take the measurement three times, use the largest reading, round up if between sizes, and specify a garment-washed blank so the size holds.
We round up when a measurement falls between fitted sizes, because both common measuring errors read short and a loose cap settles where a tight one does not. Free digital proof, free artwork setup on twelve or more, no minimums.
Measuring your head for a hat, fitted hat sizes explained, fitted vs stretch-fit hats.
Frequently Asked Questions
How do I measure my head for a fitted hat?
Wrap a soft tape a finger's width above the ears, across the middle of the forehead, level all the way round and snug without compressing. Measure over the hair as you normally wear it.
How do I convert my measurement to a fitted size?
Divide the circumference by 3.14. Fitted sizes derive from head diameter, so a 22-inch head is about 7 inches across, which is a size 7.
Why does measuring matter more for fitted caps?
There is no adjustment to absorb an error. Sizes advance in eighths — about three eighths of an inch of circumference — so a small measuring error can shift you a full size.
Why do self-measured fitted caps often arrive too small?
Both common errors read short. A tilted tape and a tape pulled tight both under-measure, which is why the guidance is to take several readings and use the largest.
What if I am between two sizes?
Size up. A slightly loose fitted cap settles with wear; a slightly tight one presses at the sweatband and does not break in.
How should a fitted cap feel when it arrives?
Marginally snug is usually correct, since a new cap relaxes slightly. Pressure at the temples means too small, and perching or lifting at the back is a crown depth problem rather than a size one.
Is there a minimum order?
No, which makes ordering a single hat to check the size before a larger run practical.
No adjustment means the measurement is the order. Order custom fitted hats — start on the quick order page — every size from 6 3/4 to 8, garment-washed to hold their fit. Free digital proof before production, free artwork setup on twelve or more, no minimums. Browse custom hats.
Popular pick: New Era 59FIFTY.
Popular blank: Richardson 112 Snapback Trucker.
★★★★★ 4.9/5 · 23,000+ reviews · Made in the USA
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