Centimetres
What size hat is 63 cm?
A head circumference of 63 cm (24.8 in) matches the following fitted size and letter band.
A 63 cm head takes US fitted hat size 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
for a 63 cm head
In cm…
63
= 24.8
UK size
7 7/8
= US minus 1/8
EU size
63
≠ 63 — EU rounds the chart row's cm
Between sizes? Go up one size for a non-adjustable hat.
Sizes near 63 cm
| US | UK | Head (cm) | Head (inches) | EU | Letter |
|---|---|---|---|---|---|
| 7 7/8 hat size | 7 3/4 | 62.5 | 24 5/8 | 63 | XXL |
| 8 hat size | 7 7/8 | 63.5 | 25 | 64 | XXL |
| 8 1/8 hat size | 8 | 64.5 | 25 3/8 | 65 | XXL |
Check any measurement
The converter turns cm or inches into every hat system, live as you type.