Size breakdown
7 7/8 hat size in cm and inches
US 7 7/8 is an eighth-size fitted label: 24 5/8 inches of head circumference, or 62.5 cm in metric.
US fitted
7 7/8
circumference 24 5/8 in ÷ π
Head circumference
62.5 cm
= 24 5/8
UK size
7 3/4
= US minus 1/8
EU size
63
= cm rounded
Letter size: about XXL. XXL.A head measured up to 0.3 cm from 62.5 cm matches this size; between sizes, take the next size up for a non-adjustable hat.Letter sizes vary by brand; check the brand's own chart.
Where 7 7/8 sits on the hat sizes chart
This size and its neighbours, so you can compare at a glance:
| US | UK | Head (cm) | Head (inches) | EU | Letter |
|---|---|---|---|---|---|
| 7 3/4 hat size | 7 5/8 | 61.5 | 24 1/4 | 62 | XXL |
| 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 |
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