Centimetres
What size hat is 64 cm?
64 cm on the tape converts to this hat size — no maths needed on your end.
A 64 cm head takes US fitted hat size 8 1/8 — your measurement sits between two sizes, so this is the next size up (the safe choice for a non-adjustable hat).
US fitted
8 1/8
for a 64 cm head
In cm…
64
= 25.2
UK size
8
= US minus 1/8
EU size
64
≠ 64 — EU rounds the chart row's cm
Between sizes? Go up one size for a non-adjustable hat.
Sizes near 64 cm
| US | UK | Head (cm) | Head (inches) | EU | Letter |
|---|---|---|---|---|---|
| 8 hat size | 7 7/8 | 63.5 | 25 | 64 | XXL |
| 8 1/8 hat size | 8 | 64.5 | 25 3/8 | 65 | XXL |
| 8 1/4 hat size | 8 1/8 | 65.4 | 25 3/4 | 65 | XXL |
Check any measurement
The converter turns cm or inches into every hat system, live as you type.