Helmet Size Calculator
Determine your helmet size from head circumference and shape.
Inputs
in
Results
Helmet Size
Medium
Size Code
M
Head ShapeIntermediate Oval
Circumference22.4 in
Hat Size (US)7.13
Suggested BrandsShoei, Bell, AGV
How to Use This Calculator
- Enter Head Circumference and select your Head Shape (Round Oval, Intermediate Oval, or Long Oval).
- Review Helmet Size and Size Code.
- Use Head Shape and Circumference (in) to inform your decision.
- Check Hat Size (US) and Suggested Brands for additional guidance.
What each input means
- Head Circumference
- Measure around your head just above the eyebrows and ears.
- Head Shape
- Look at your head from above: round, slightly oval, or noticeably elongated.
How this is calculated
Worked example, using the default values
- Identify Input ParametersHead Circumference = 57, Head Shape = 2 = 2 input(s) provided
- Calculate Helmet SizeMedium = Medium
- Calculate Size CodeSize CodeM = M
- Calculate Head ShapeIntermediate Oval = Intermediate Oval
- Calculate CircumferenceCircumference22.4 = 22.4
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