Helmet Size Charts: Helpful Guidelines
Comprehensive Overview of Helmet Size Chart: Our detailed size charts are designed to help customers make informed decisions about their helmet purchases. Each chart provides essential measurements and helpful guidelines, ensuring you select the perfect fit for your needs. Whether you’re browsing or using our user-friendly resources, this guide will empower you to make informed choices with confidence and ease.
Table of Contents
ToggleUniversal Helmet Size Chart
| Size | Head Circumference (in) | Head Circumference (cm) | Typical Age / Notes |
|---|---|---|---|
| Junior Small (JS) | 19–20 | 48–51 | Children 4–6 years |
| Junior (J) | 20–21 | 51–54 | Children 7–10 years |
| Youth (Y) | 21–22 | 54–56 | Children 11–14 years |
| Adult Small (S) | 22–23 | 56–58 | Teenagers & adults with smaller heads |
| Adult Medium (M) | 23–24 | 58–61 | Standard adult head size |
| Adult Large (L) | 24–25 | 61–64 | Larger adult head size |
| X Large (XL) | 25–26 | 64–66 | Extra-large adult head size |
| 2X Large (XXL) | 26–27 | 66–69 | Oversize adult head |
The table above provides a Universal Helmet Size Chart, covering sizes from Junior through to Adult, including oversize adult options. It is designed to give you a clear overview of typical helmet sizing based on head measurements in inches and centimetres. Adjustable straps, padding, and internal fit systems may affect the fit, so always check measurements carefully. This makes it easier to find the right fit across age groups when shopping online.
However, please note that sizing can vary slightly between brands, so this chart should be used as a general reference only. If a specific product has a brand-supplied size guide, you’ll find it listed in the product description—we recommend referring to that first for the most accurate fit.
Considering More Than Just Size
In addition to head circumference, it is also important to consider the type of helmet, padding, and its intended use. For example:
- Cricket, football, or hockey helmets – Designed for sport-specific protection, often including high-density foam and reinforced shells for impact resistance.
- Cycling or multi-sport helmets – Lightweight and ventilated, optimised for comfort and mobility while still protecting against impacts.
- Oversized adult helmets – Provide extra coverage for larger heads or taller players, ensuring a secure fit and maximum protection.
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Adjustable straps and padding – Allow fine-tuning of the fit for comfort, stability, and safety. Proper adjustment ensures the helmet stays in place during movement or impacts.
Choosing the Right Size
- If you’re between sizes or unsure, we generally recommend sizing up for added comfort and full coverage.
- This is particularly helpful for growing children, youth, or players with larger head sizes.
Why This Guide Matters
We know that finding the right helmet size can sometimes be a challenge — especially with the wide range of different sports, brands, and helmet models that may have slightly different standards. That’s why we’ve created this comprehensive Helmet Guard Size Chart Guide to help you make confident, informed decisions when shopping online with us.
Final Note
This general guide is a helpful starting point, but it’s important to remember that helmet sizes can vary slightly between brands, styles, and padding thickness. Whenever possible, we strongly recommend checking the brand-specific size guides provided on our product pages for the most accurate fit.
✅ Pro Tips for Measuring Helmets
- Measure head circumference: Use a flexible tape measure to wrap around the widest part of your head, just above the eyebrows and ears. Measure in centimetres or inches and compare it with the helmet size chart for the best fit.
- Check internal padding and adjustability: Helmets should feel snug against your head without causing pressure points. Adjust internal padding, straps, or retention systems to ensure the helmet stays secure without slipping during movement.
- Try for a proper fit: Once fitted, the helmet should remain stable even with sudden head movement, tilting, or mild shaking. A poorly fitting helmet can compromise safety and comfort.
- Consider sport-specific requirements: Different sports may require additional reinforcement, faceguards, or visors. Check the helmet type against your sport’s regulations to ensure it meets protective standards.
- When in doubt, size up: For youth players, growing individuals, or oversized adult helmets, choosing a slightly larger size can provide extra comfort, allow for adjustable padding, and maintain proper protection.
Brand-Specific Size Guides
On our website, you’ll find these brand-specific size guides directly under the product description on each product page. These charts are provided by the manufacturers and are the most accurate reference for that particular brand. If a brand-specific guide is listed, we encourage you to follow it rather than relying solely on this general chart.
Below is a list of brands currently stocked by A7 Sports, each offering its own brand-specific size chart for reference:
Masuri Helmet Size Chart
Our inventory is continuously updated to feature the latest product lines, technological advancements, and seasonal collections from leading global brands. We work closely with top manufacturers to ensure our customers have timely access to new releases and high-performance gear as soon as they hit the market.
For the most up-to-date selection, including limited editions and seasonal launches, we recommend checking back regularly or subscribing to our updates.
Note: Brand availability may vary based on current stock and specific product lines. For the most accurate and up-to-date information, please refer to the individual product pages or contact our customer service team directly.
Still have questions? Our customer support team is happy to help—feel free to reach out before placing your order.

