Helmet Size Calculator

Helmet Size Calculator delivers precise helmet sizing based on head circumference, cranial shape, face profile, and hair volume. Advanced fit logic highlights pressure risks, stability, comfort, and buying confidence, helping riders choose the right helmet size with clarity and confidence assured!

STREET
RACE
OFF-ROAD
CM
INCH
RECOMMENDED
—
CIRC: — CM
01 Primary Result
Final Helmet Size
—
Based on effective circumference.
Tolerance—
Eff. Circ—
Size Confidence
—
Certainty based on variance.
Variance—
Factors—
Sizing Advice
—
Fit strategy recommendation.
Reason—
Strategy—
02 Dimensional Fit
Shape Match Index
—
Compatibility with standard lids.
Deviation–%
IdealIntermediate
Forehead Pressure
—
Risk of “hotspot” pain.
Source—
Fix—
Cheek Compression
—
Pad pressure estimate.
Break-in—
Pads—
03 Stability & Retention
Retention Score
—
Stability on head at speed.
Factor—
Speed—
Roll-Off Risk
—
Security against forward rotation.
Gap—
Check—
Shell Utilization
—
EPS Liner thickness efficiency.
Type—
Weight—
04 Comfort & Usability
Eyewear Compat.
—
Glasses temple clearance.
Fit—
Pressure—
Ventilation Eff.
—
Airflow potential based on fit.
Flow—
Type—
Noise Isolation
—
Wind noise sealing potential.
Seal—
Rating—
05 Buying Intelligence
Brand Direction
—
Sizing tendency by shape.
Trend—
Driver—
Return Prob.
—
Risk of fit failure.
Risk—
Factor—
Market Liquidity
—
Resale ease for this size.
Demand—
Value—
COPIED TO CLIPBOARD

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