Helmet Size Calculator
Find Helmet Size
cm
Formula
XS: 53–54cm | S: 55–56cm | M: 57–58cm | L: 59–60cm | XL: 61–62cm | XXL: 63–64cm
Frequently Asked Questions
How do I measure my head for a helmet?
Wrap a flexible tape measure around the widest part of your head, about 1 inch (2.5 cm) above your eyebrows and ears. This is your head circumference.
What helmet size is medium?
Medium helmets typically fit head circumferences of 57–58 cm (22.4–22.8 inches). This is the most common adult size.
Do helmet sizes differ between brands?
Yes, sizing can vary between manufacturers. Always check the specific brand's size chart. Some brands run small or large compared to the standard XS-XXL scale.
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