8 Hat Size: Inches, CM & Hats That Fit

A size 8 hat fits about a 25⅛-inch (63.8 cm) head, the largest size most fitted lines make. Exact range and hats that fit.

A 8 hat fits a head circumference of about 25⅛ inches (63.8 cm), covering heads from roughly 24.9 to 25.3 inches (63.3–64.3 cm). Size 8 is the largest size most major fitted lines make, and the end of the road for almost every snapback.

8 hat size in inches and cm

Hat size Head (inches) Head (cm)
7⅞ 24¾ (24.5–24.9) 62.8 (62.3–63.3)
8 25⅛ (24.9–25.3) 63.8 (63.3–64.3)
8⅛ 25½ (25.3–25.7) 64.8 (64.3–65.3)

The maths: 25.13 in ÷ 3.1416 = 8.000, which is 8 (written 8 on a lot of labels). Full range on the hat size chart.

How common is a 8 head?

In the US Army's ANSUR II survey (4,082 men and 1,986 women measured), the median head circumference was 57.4 cm for men and 56.0 cm for women, and the 95th percentile was 60.1 cm for men and 59.7 cm for women. A size 8 head (63.3–64.3 cm) is over 3 cm above the men's 95th percentile. It's rare enough that ANSUR II's published summary doesn't give a percentile for it. One of our customers, Mark W., put it plainly in his review: "I have a size 8 head."

8 in New Era, Flexfit and Richardson sizes

Brand / model Your size
New Era 59FIFTY (fitted) 8 (25 in / 63.5 cm), the largest size listed
New Era 39THIRTY (stretch) No: L/XL max 24⅝ in
New Era 9FORTY (adjustable) No: max 23⅞ in
Flexfit 6277 XL/2XL, at the top (listed to size 8)
Flexfit 110 (one size) No: max 7⅞
Richardson 112 XL No: about 7⅞ max

Brand figures come from each maker's published size chart. Details and caveats in our fitted hat size chart by brand.

Do one-size caps fit a 8?

No. Every one-size cap we checked tops out at 7⅞ or lower. At size 8, your options from the big three are a New Era 59FIFTY in 8 or a Flexfit XL/2XL, both at the very end of their charts. Soraya W. found the limit: "I am an 8 in traditional New Era sizing and even an 8 is slightly small."

Does MONGO fit a 8?

Yes. A size 8 is right in the middle of MONGO's range (7½–8½, 60–68 cm). Middle snap, deep crown, no squeeze.

Try the XL Performance Snapback 2.0 ($59.99, 7 colours) or the XL Foam Trucker ($44.99). Free US shipping and a 30-day fit guarantee: if it doesn't fit, we cover the return shipping.

Neighbouring sizes

8 hat size FAQ

What is size 8 hat in cm?

About 63.8 cm, covering heads from roughly 63.3 to 64.3 cm. New Era lists its size 8 fitted as 63.5 cm.

What hat size is 25 inches?

A 25-inch head is a size 8 (25 ÷ 3.1416 = 7.96).

What hat size is 64 cm?

64 cm (25¼ in) is a size 8.

Is a size 8 hat big?

Yes. It's more than 3 cm above the men's 95th percentile in the ANSUR II survey, and it's the largest size most fitted lines make.

Does New Era make a size 8?

Yes. New Era's 59FIFTY chart goes up to 8 (25 in / 63.5 cm), and that is the largest size it lists.