Measure For A Bicycle Helmet

A Proper Way To Measure For A Bicycle Helmet

Bike safety includes wearing a bicycle helmet. However, buying an ill-fitting one might still result in traffic accidents and injuries. Helmets are typically measured in millimeters and available in sizes ranging from small to medium to large to extra large.

With all of these sizes available, you may be perplexed as to which helmet is most suited to your requirements. As a result, we prepared this page about how to measure for a bicycle helmet to give you accurate helmet measurement information. Here’s a rundown of the actions you’ll need to take:

  • Check your measurements
  • Choose some helmets
  • Try them out
  • Make necessary adjustments
  • Shaking test

Measure For A Bicycle Helmet

Sizing Standards and Helmet Guide

When it comes to bike helmets, size does matter. Using incorrect bicycle helmet sizes might jeopardize safety and waste money. Before buying a bicycle helmet, it is essential to determine the proper size.

Smaller helmets might cause greater sweating on the road since they allow less air to flow. A smaller helmet will also leave markings on your head and may cause discomfort.

A larger helmet, on the other hand, is more likely to fall off, increasing the chance of a traffic accident. It may also obstruct your perspective on the road, making it difficult to ride properly. During an accident or collision, a large helmet cannot provide enough protection. The helmet may be readily removed from your head, leaving you vulnerable.

Measure For A Bicycle Helmet

As a result, it is critical to have a helmet that fits properly. If it is an inch or more above your brows, it is the correct size. You may easily achieve this by using a measuring tape and following the given steps

Materials Required To Measure For A Bicycle Helmet

You just need a measuring equipment for this tutorial, particularly a measuring tape. It is stretchy, allowing you to wrap the cloth around your head. This tool allows you to take accurate measurements.

Measuring Bike Helmet Properly

1. Measure Your Head Size For Bicycle Helmet

When measuring for a bicycle helmet, it is important to use the proper instrument. When determining your head measurement and measuring for a cycling helmet, a fabric tape measure is best. Wrap it around your head about an inch over your brows and ears. The tape measure must go around the biggest portion of the back of your head. This will give you the correct circumference of your head in centimeters.

2. Select some helmets

Try on various helmets once you’ve measured your head for a bike helmet. Select a few helmets that fit your head size. There are many bicycle helmet sizes, and you can simply identify the one that matches your head measurement.

It is preferable to visit a helmet store rather than buying online to ensure that you buy the perfect size and fit for your head. When choosing a bicycle helmet, you might refer to the following table:

Helmet Sizing Measurement (in centimeters)
XS 53 to 54
S 55 to 56
M 57 to 58
L 59 to 60
XL 61 to 62
2XL 63 to 64
3XL 65 to 66

3. Put Them On To Test

After you’ve chosen the helmets in your size range, you may try them on to get the best fit. Make sure to try on multiple helmets, and keep in mind that a helmet must cover your complete forehead in order to protect the front lobe of your brain. Also, pay attention to how comfortable you feel when putting on the helmet.

4. Make Necessary Adjustments

Make necessary adjustments to your helmet so that it fits precisely on your head. Helmets include a variety of features, including an adjustable system. The more costly the product, the more choices for customization it has. This allows for a more exact and precise fit of the helmet on your head.

Make sure your helmet has adjustable straps to keep it in place when riding. When wearing it on your head, pay attention to the strain. It must be uniformly distributed to provide maximum comfort.

When making changes, attach the chin strap so that it fits firmly beneath your chin. Make sure you can fit one finger between the helmet strap and your chin. When you open your lips wide, the helmet should press on the top of your head as well.

Remember not to buy a helmet that is too small. It might irritate your skin and create spots on your head. It also has limited ventilation, making it an unsuitable fit.

5. Shaking Test

After you’ve secured the helmet straps, the next step is to do a shaking test. Shake your head all about, from side to side and in all directions. Check that the product does not shift even an inch in any direction. Check the straps for looseness and that they do not interfere with comfort.


1. What size of bike helmet do I need?

To determine the right size for a bike helmet, measure your head circumference using a flexible tape measure. Then, refer to the helmet manufacturer’s size chart to find the corresponding size for your measurement.

2. How do I know my helmet size?

Knowing your helmet size involves measuring the circumference of your head just above your eyebrows. Ensure the tape is snug but not too tight. Match this measurement with the helmet brand’s size chart to find your accurate size.

3. What size is a 52cm helmet?

A 52cm helmet size generally falls within the small to medium range. However, it’s crucial to check the specific brand’s size chart, as sizes can vary between manufacturers.

4. What helmet size is 24?

A helmet labeled as size 24 is likely to be either extra small or small, depending on the brand. To be certain, refer to the manufacturer’s size chart for accurate sizing information.

Final Words – Measure For A Bicycle Helmet

Bicycle helmets are designed to keep you safe in the event of an accident. However, without the proper fitting, it might still jeopardize your safety. Thank goodness for this straightforward advice on how to measure for a bike helmet. We keep the steps basic and to the point. I hope you find these useful when buying  your next cycling helmet.

About the author

Meet Alex Brown, a fervent advocate for bicycles, dedicated to sharing his passion and knowledge with the world. From his early fascination with cycling, he has evolved into a lifelong enthusiast, committed to making the world of bikes accessible to everyone. Alex believes in the transformative power of cycling, aiming to create a future where it's not just a means of transport but a lifestyle that promotes joy, health, and community.




Leave a Comment