Step-by-Step: How To Measure Head Size For Helmet Correctly
To measure your head for a helmet, you need to find the widest part of your head. This area is usually about one inch (2.5 cm) above your eyebrows, just above your ears, and around the back of your head. This measurement is known as your head circumference for helmet. It is the most important number for finding a helmet that fits right. Getting this measurement correct is the first and most vital step to ensure proper helmet fit and helmet safety fit. It helps you pick the right size from any helmet sizing guide, whether for a bike or a motorcycle. Taking an accurate head measurement is key to keeping you safe and comfortable.
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Why a Good Helmet Fit Matters
A helmet is more than just a piece of gear; it is your main protector. It keeps your head safe in a crash. A helmet that fits well is very important for many reasons.
- Top Safety: A helmet works by spreading out the force of an impact. If it is too big, it might move around. If it is too small, it will not cover your head fully. A helmet that fits just right stays in place. It can do its job to keep your head safe. This is vital for helmet safety fit.
- True Comfort: You will wear your helmet for long periods. If it feels too tight or too loose, it will be uncomfortable. A too-tight helmet can cause headaches or pressure points. A too-loose helmet will bounce around. It might even block your view. A good fit means you can focus on your ride, not on your helmet.
- Better Performance: A wobbling helmet is a distraction. It can make riding less enjoyable. It can even make it harder to see. With a helmet that fits well, you have a clear view. You can move your head easily. This helps you ride better and safer. For example, in motorcycle helmet sizing, a small wobble can be dangerous at high speeds. For a bike helmet size chart, a good fit means it stays put during jumps or bumps.
Getting the proper helmet fit starts with knowing your head size. This simple step makes sure your helmet will do its job when you need it most. It also makes your rides much better.
Tools You Will Need
You only need a few simple things to measure your head correctly. Make sure you have these items ready before you start.
- Flexible Measuring Tape: This is the most important tool. A cloth or plastic tape measure works best. It bends easily around your head. Do not use a metal construction tape measure. It will not bend right.
- Mirror (Optional, but Helpful): Standing in front of a mirror can help you see if the tape is level. It helps you make sure it is in the right spot.
- Pen and Paper: You will need to write down your measurement. It is good to write it down right away so you do not forget it.
- Another Person (Optional, but Makes it Easier): Asking a friend or family member to help can make the job easier. They can help keep the tape level. They can also read the number for you.
Having these tools ready makes the measuring process smooth. It helps you get the most accurate head measurement.
The Step-by-Step Measurement Guide
Taking your head measurement is simple. Just follow these steps carefully. This will help you find the right head circumference for helmet.
Step 1: Get Ready
First, prepare yourself and your hair.
* Remove anything on your head: Take off hats, scarves, or headbands.
* Clear your hair: If you have long hair, tie it up. But make sure the hair tie is low. It should not be on the part of your head you are measuring. Hair can add bulk. This can lead to a wrong measurement. For example, a big bun could make your head seem bigger than it is. You want to measure your actual head, not your hair.
* Stand straight: Stand in a normal, relaxed way. Look straight ahead. Do not tilt your head up or down. This helps keep your head in a natural shape. This natural shape is what the helmet will sit on.
Step 2: Position the Tape Right
This step is very important for an accurate head measurement. The measuring tape position for helmet needs to be precise.
* Find the widest part: Hold the start of the tape measure (the “0” end) in the middle of your forehead. Place it about one inch (2.5 cm) above your eyebrows. This is usually where your forehead is widest.
* Go around your head: Bring the tape measure around the sides of your head. It should go just above your ears. Then, bring it around the very back of your head. Make sure the tape goes over the biggest bump at the back of your head. This is usually the widest part of your skull.
* Keep it level: It is very important to keep the tape measure level all the way around. Imagine a straight line going around your head. The tape should follow this line. If the tape dips down at the back or rides up at the sides, your measurement will not be correct. Using a mirror can help you check this. Or, have someone help you.
* Ensure it’s snug: The tape should be snug against your head. It should not be tight enough to squeeze your skin. It should not be so loose that it can easily slide down. Think of it like a comfortable headband. It should feel firm but not press hard.
Step 3: Take the Measurement
Once the tape is in the right spot, read the number.
* Read the overlap: Look at where the tape measure overlaps the “0” end. This number is your head circumference.
* Note the units: Most helmet charts use centimeters (cm). It is good to write down the measurement in both centimeters and inches. This makes it easier to compare with different helmet sizing guide charts. For example, you might get 58 cm. This is about 22.8 inches.
* Measure a few times: To be sure, measure your head two or three times. This helps ensure an accurate head measurement. If you get slightly different numbers, use the largest one. Or, take the average of the readings. Consistency is key here.
Step 4: Check for Common Mistakes
Avoid these simple errors to get the best measurement for your head circumference for helmet:
* Tape too loose or too tight: Remember, snug not squishing, and not too loose to move around.
* Tape not level: Always double-check that the tape is flat and level all the way around your head. This is the most common mistake.
* Measuring over hair: Your hair, especially thick hair, can add extra inches. Always measure directly on your scalp.
* Not measuring the widest part: Make sure the tape is truly around the largest part of your head. This includes the widest spot on your forehead and the back of your skull.
By following these steps, you will get a very accurate head circumference for helmet. This number is your starting point for finding the perfect helmet.
Applying Your Measurement to Sizing Charts
Once you have your accurate head measurement, the next step is to use a helmet sizing guide. Each brand might have its own chart. But they all use similar size ranges.
General Size Ranges
Most helmets come in standard sizes: Extra Small (XS), Small (S), Medium (M), Large (L), Extra Large (XL), and sometimes XXL or XXXL. Your measurement will tell you which of these sizes you should start with.
Here is a general helmet sizing guide table. Remember, this is a starting point. Always check the specific brand’s chart.
| Head Circumference (cm) | Head Circumference (inches) | Helmet Size |
|---|---|---|
| 53-54 | 20.9 – 21.3 | XS |
| 55-56 | 21.7 – 22.0 | S |
| 57-58 | 22.4 – 22.8 | M |
| 59-60 | 23.2 – 23.6 | L |
| 61-62 | 24.0 – 24.4 | XL |
| 63-64 | 24.8 – 25.2 | XXL |
| 65-66 | 25.6 – 26.0 | XXXL |
Motorcycle Helmet Sizing
Motorcycle helmet sizing can be a bit more complex. This is because motorcycle helmets need to fit very snugly. They must stay put at high speeds. Some brands might have slightly different ranges. Also, the shape of your head matters a lot for motorcycle helmets. Some people have round heads. Others have oval heads. Some helmets are made for one shape more than another.
Here is an example of a motorcycle helmet sizing chart. Again, check the brand’s specific chart.
| Head Circumference (cm) | Head Circumference (inches) | Motorcycle Helmet Size |
|---|---|---|
| 53-54 | 20.9 – 21.3 | XS |
| 55-56 | 21.7 – 22.0 | S |
| 57-58 | 22.4 – 22.8 | M |
| 59-60 | 23.2 – 23.6 | L |
| 61-62 | 24.0 – 24.4 | XL |
| 63-64 | 24.8 – 25.2 | XXL |
For motorcycle helmet sizing, you often find brands that offer helmets for “intermediate oval,” “long oval,” or “round oval” head shapes. If a helmet feels too tight on your forehead or temples even if the size is right, you might have a different head shape than that helmet is designed for. Always try on a motorcycle helmet before buying.
Bike Helmet Size Chart
Bike helmet size chart often covers a broader range within each size. Many bike helmets have adjustable systems. These systems allow for a more personalized fit. This means one size might cover a wider range of head circumferences.
Here is an example of a bike helmet size chart. Notice how the ranges are often wider.
| Head Circumference (cm) | Head Circumference (inches) | Bike Helmet Size |
|---|---|---|
| 44-50 | 17.3 – 19.7 | Toddler |
| 48-54 | 18.9 – 21.3 | Child |
| 52-58 | 20.5 – 22.8 | Youth / Adult S-M |
| 58-62 | 22.8 – 24.4 | Adult M-L |
| 60-64 | 23.6 – 25.2 | Adult XL |
Even with adjustable features, getting the initial size right with your head circumference for helmet is important. The adjustable part fine-tunes the fit, but it cannot make a helmet that is too far off the right size work.
Special Considerations
Some groups or types of helmets need a bit more thought when sizing.
Kids Helmet Measurement
When it comes to children, kids helmet measurement is extra important. Children grow fast. A helmet that fits one day might be too small a few months later.
* Measure often: Check your child’s head size at least every 6-12 months. More often if they are very young.
* Fit is key: Never buy a helmet for a child to “grow into.” A helmet that is too big will not protect them. It could even come off in a fall. It must fit right now.
* Never adult helmets: Do not use an adult helmet for a child. Kids’ helmets are lighter. They are designed for smaller heads and weaker neck muscles. They also often have different safety features. These features are made for kids.
* Teach them: Teach children how to check their helmet fit. They should know if it feels loose or tight. This helps them learn about helmet safety fit.
Motorcycle Helmet Sizing
As mentioned, motorcycle helmet sizing has unique points:
* Head Shape: Beyond circumference, head shape matters. Try helmets from different brands. Some brands fit “round” heads better. Others fit “oval” heads. If you feel pressure on your forehead or the back of your head, the helmet might not match your head shape.
* Trying on: You must try on motorcycle helmets. The fit should be snug all around. It should not hurt. Your cheeks should feel a gentle squeeze. Your head should not move inside the helmet when you shake it.
* Cheek Pads: Many motorcycle helmets have removable cheek pads. You can often buy thicker or thinner pads. This helps fine-tune the fit. This small change can make a big difference for proper helmet fit.
Bike Helmet Sizing
Bike helmet sizing is usually more forgiving. This is thanks to their adjustable features.
* Adjustable Fit Systems: Most modern bike helmets have a dial or strap system at the back. This lets you tighten or loosen the fit around your head. This helps customize the head circumference for helmet.
* Straps and Buckle: The chin strap and side straps also help keep the helmet in place. Make sure the Y-straps meet just below your ears. The chin strap should be snug. You should be able to fit one or two fingers under it.
* Fit Pad Options: Some bike helmets come with different thickness pads. You can swap these out to get a better feel.
No matter the type of helmet, the goal is always a secure, comfortable, and safe fit. Your initial accurate head measurement is the first step. The try-on test is the final check.
The Try-On Test: Ensuring Proper Helmet Fit
Measuring your head is a great start. But the true test of proper helmet fit comes when you put the helmet on. This test makes sure the helmet will protect you well. It is important for helmet safety fit.
Here’s how to do the try-on test:
- Put the Helmet On: Slide the helmet onto your head. It should feel snug. It should not be hard to put on. If it’s too easy, it might be too big.
- Adjust the Fit System (if applicable):
- Bike Helmets: Use the dial at the back. Turn it until the helmet feels firm but comfortable. It should not feel like it’s squeezing your brain.
- Motorcycle Helmets: The fit is mostly fixed. You might feel a gentle pressure. This is normal.
- The Shake Test:
- Buckle the chin strap. Make it snug. You should be able to fit one or two fingers under it.
- Now, gently shake your head from side to side and up and down.
- The helmet should stay still. It should not wobble or slide. Your skin should move with the helmet. If the helmet moves around your head, it’s too big. This is a very important part of helmet safety fit.
- The Roll-Off Test:
- With the chin strap buckled, try to roll the helmet off your head from the back.
- Pull the back of the helmet firmly upwards.
- The helmet should resist rolling forward over your eyes. It should not be able to come off. If it can, the chin strap might be too loose. Or the helmet itself is too big.
- Check for Pressure Points:
- Wear the helmet for a few minutes (at least 5-10 minutes if possible).
- Feel for any spots that pinch or hurt. These are called pressure points.
- Common pressure points are on the forehead, temples, or behind the ears.
- If you feel strong pressure, the helmet might be too small. Or, it might not be the right shape for your head. A slight, even pressure all around is good. A painful pressure is bad.
- Vision Check:
- Look straight ahead. Can you see well?
- The helmet should not block your vision to the sides or up and down.
- For motorcycle helmets, check your peripheral vision. It should not be overly restricted.
- Breathing Check:
- If it’s a full-face helmet, check that you can breathe easily.
- Make sure the breath guard (if present) does not hit your nose.
If the helmet passes all these tests, you have found a proper helmet fit. If it fails any test, try a different size or a different brand. Never settle for a helmet that does not fit perfectly. Your safety depends on it. This full check is what ensures your helmet safety fit.
When to Remeasure
Your head size might not change much as an adult. But there are times when you should remeasure your head circumference for helmet:
- Growing Children: As mentioned earlier, kids grow fast. Their heads grow too. Remeasure their head size every 6 to 12 months. This makes sure their helmet still provides proper helmet fit and helmet safety fit.
- Buying a New Helmet Brand: Even if your head size stays the same, different brands can have slightly different sizing charts. Always check the new brand’s helmet sizing guide with your fresh accurate head measurement.
- Significant Hair Changes: If you had very long, thick hair that you always measured over, and then you cut it very short, your measurement might change slightly. It’s rare for this to make a big difference, but it’s worth noting.
- After a Head Injury: If you have had a serious head injury, your doctor might advise remeasuring. This is rare, but important to know. Always consult a doctor first.
- If Your Current Helmet No Longer Feels Right: If your old helmet suddenly feels too loose or too tight, remeasure your head. Then compare it to the helmet sizing guide for that helmet. It might be time for a new one. This could be due to helmet padding wearing out, or very minor head changes.
By knowing when to remeasure, you can always make sure you are getting the best proper helmet fit for your safety.
Frequently Asked Questions (FAQ)
Q: Can I use a string instead of a tape measure?
A: Yes, you can use a string. Wrap it around your head just like you would a tape measure. Make sure to keep it level. Then, lay the string flat against a ruler or metal tape measure to get the length. This is a good way to get your accurate head measurement if you do not have a flexible tape.
Q: What if my head size is between two sizes on the helmet sizing guide?
A: If your head circumference for helmet falls between two sizes, it is generally best to try the smaller size first. Helmets should be snug. Padding often breaks in over time. A slightly tighter fit that you can bear will offer better protection than a loose one. Always do the try-on test for proper helmet fit. If the smaller size is too tight or causes pressure points, then go with the larger size.
Q: Should I measure my head with hair or without?
A: You should measure your head without any hair adding bulk. This means no ponytails, buns, or thick braids on the part of your head you are measuring. Hair should be as flat as possible. This ensures you get your true head circumference for helmet. A helmet is designed to fit your skull, not your hair.
Q: How often should I measure my head for a helmet?
A: For adults, your head size usually does not change much. You might only need to remeasure if you buy a new helmet brand. Or, if your current helmet no longer feels right. For children, you should measure their head at least every 6 to 12 months. This is because children grow quickly. This ensures their kids helmet measurement leads to continued helmet safety fit.
Q: How do I know if my helmet is too big or too small?
A:
* Too Big: If the helmet moves easily when you shake your head, or if it slides down over your eyes when you lean forward, it is too big. You should be able to fit more than two fingers under the chin strap. If you can fit a whole hand in, it is too big. This means it lacks proper helmet fit.
* Too Small: If the helmet causes painful pressure points on your forehead, temples, or elsewhere, it is too small. If it is very hard to put on, or you cannot get it all the way down onto your head, it is likely too small. This will not provide helmet safety fit.
Remember the try-on test: the helmet should be snug and stay put, but not cause pain.