Sun Hat Size Chart
Enter your head circumference (in inches) to find your recommended hat size:
| Head Circumference (inches) | Head Circumference (cm) | Hat Size |
|---|---|---|
| 21 1/4 – 21 5/8 | 54 – 55 cm | Small (S) |
| 21 5/8 – 22 | 55 – 56 cm | Medium (M) |
| 22 1/4 – 22 5/8 | 57 – 58 cm | Large (L) |
| 22 5/8 – 23 | 58 – 59 cm | X-Large (XL) |
| 23 1/4 – 23 5/8 | 59 – 60 cm | XX-Large (XXL) |
Looking for the perfect fit? Check Out These Best-Selling Sun Hat.

How to measure your head for a sun hat
- Use a soft measuring tape or a string to wrap around the widest part of your head, typically just above your ears and eyebrows.
- Make sure the tape is level and snug but not tight.
- Compare your measurement with the chart to find your size.
Best Selling Sun Hat in 2026
Looking for the best Sun Hat? We've handpicked the top-rated, best-selling options available on Amazon right now. Whether you're comparing sizes or searching for the perfect fit, these picks are loved by thousands of happy customers.
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Keep in mind that hat sizes may vary slightly between brands, so always check if the manufacturer has its own size guidelines.
