Motorcycle helmet size guide for Philippine riders
Helmet size starts with head circumference, but the number is only a starting point. Different helmet models can fit different head shapes, so measure first, use the exact model's chart and then check how the helmet sits on your head.
Source check: 2026-09-09How to measure your head for a motorcycle helmet
Use a soft measuring tape and keep it level around the widest part of your head. SHOEI's fitting instructions place the tape about 2 cm above the eyebrows, above the ears and around the most prominent point at the back of the head.
Record the measurement in centimeters and compare it with the size chart for the exact helmet model you want. Do not assume that a Medium from one brand or product family will fit exactly like a Medium from another.
Quick check
- Measure more than once and use a consistent result
- Keep hair in the way you normally wear it while riding
- Use the exact model's size chart
- If you fall between sizes, try both when possible
What a correctly fitted helmet should feel like
A new helmet should feel snug around the crown and cheeks without creating a sharp pressure point. When you move the helmet, your skin should move with it rather than the shell sliding freely around your head.
Wear the helmet for several minutes before deciding. A size that feels loose in the shop is unlikely to become tighter with use because comfort padding normally settles rather than expands.
Quick check
- Cheek pads should contact the cheeks
- The crown should feel evenly supported
- The helmet should not rotate easily around your head
- The retention strap should fasten securely without uncomfortable pressure
Head shape matters as much as the size label
Two riders with the same circumference can need different helmet models because internal head shape varies. A pressure point at the forehead or sides can be a shape mismatch rather than a reason to simply buy a larger helmet.
This is why MotoIndex keeps model-specific size charts where a reliable source exists instead of publishing one universal brand chart.
Recheck fit when buying online
An online size chart can narrow the choice, but it cannot confirm your head shape or cheek-pad fit. Confirm the seller's return or exchange policy before removing tags or protective film, and inspect the exact helmet when it arrives.
For a helmet sold in the Philippines, also check the applicable PS or ICC conformity marking on the unit rather than relying only on the online listing.
Sources used for this guide
Open the original manufacturer or Philippine government source when you need to verify a current requirement or fit instruction.
Frequently asked questions
How do I know my motorcycle helmet size?
Measure your head circumference around the widest area, compare it with the exact model's size chart and then try the helmet on when possible. The size label alone does not confirm fit.
Should a new motorcycle helmet feel tight?
It should feel snug and stable without a sharp or painful pressure point. If the helmet moves easily while your head stays still, it may be too large.
Are helmet sizes the same across brands?
No. Size charts and internal shapes can vary by brand and model, so use the chart for the exact helmet rather than assuming a familiar letter size will fit.
What if I am between two helmet sizes?
Use the manufacturer's model-specific guidance and try both sizes when possible. Fit and head shape should decide rather than automatically choosing the larger size.