How To Measure Road Bike Frame Size

The size of a road bike is determined by the frame size. It is utterly necessary to have the knowledge of measuring the frame. If you are going to buy a road bike for the first time, this measurement procedure is a must to learn.

how to measure road bike frame size

Road bikes are of different sizes depending on the variety in the size of its frame. Whenever you are in the market for purchasing a road bike, there is no better alternative than knowing the exact size. However, you have to know about your own height too.

There is a size chart available corresponding TO the relationship between the rider and the bike. Having the exact information about the road bike size helps you in avoiding future muscle pains and injuries.


Measuring and identifying the appropriate road bike for yourself or your child is an easy task. At first, calculate the rider’s leg height. Place a book in the middle of two legs and let the person stand at a wall.

Now, find out the height in centimeter. Multiply it with 0.7. This is the required size of the bike.


When you are in the road bike shop, calculate the C-T of a bike. Match it with the previous result. And, you are there! This is the most acceptable method for measuring the road bike frame.

If you have more interest in this process, you can continue in the following to know more.


Why Having A Suitable Road Bike is Recommended?


Road bikes are used for frequent uses. Comfortable ride and convenient control are the prerequisites to get the best advantages of the transport. Both of these are impossible if the size is not appropriate. The bike must suit with the rider.

A good way to understand the requirement is avoiding injuries. Sometimes, the rider cannot touch the ground and falls under severe accident. Such misery can be avoidable if the rider holds the full control.


Along with the security, convenience comes in the second position. None wants a bitter riding experience. The frame size of a road bike is the key to making the things go okay. Getting the contact of pedals are very important for a comfortable ride on a road bike.


Muscle pains and frequent injuries happen every now and then because of improper road bike selection. Knowing the suitability and compatibility with the road bike adds an extra layer of security and helps the rider to get rid of such pains. One of the major reasons of arthritis among the road bike riders is riding on unbalanced bikes.



There is no good in ignoring the pain in primary riding. Replacing the road bike with a suitable size can be the easiest solution to the problem.


Last, but not the least requirement of riding on a suitable road bike is for control. Everyone wants speed, balance, and pace in a ride. The road bike is no different from them. It will be only possible if the size is compromised and optimized. You must be equipped with the knowledge of a road bike for enjoying the best ride in your area on the favorite road bike.


As you know that measuring the road bike frame is important, let’s move onto the details about the procedure.


How to Get the Appropriate A Road Bike Frame Size?


The process is simple, but you have to give attention to every detail. There are three types of road bikes. They are kids, ladies and unisex. But the measurement process is the same for all of them. Before you go shopping, measure your height and call someone for helping you out. Follow the below steps:

Step 1: Stand Against a Wall

Go near a wall and stand vertically. Keep your spine and legs completely still.


Step 2: Place a Book between Thighs

A dictionary or novel will be a good choice for this step. Place it to on the top middle part of your legs as you are sitting on the seat.


Step 3: Calculate the Height in cm. unit.

Now, call the person who is helping you to calculate the height from the top edge of the book to the floor. Convert it into centimeter by multiplying an inch with 2.54.


Step 4: Multiplication

At this point, multiply the height with 0.7. The number what you get is the frame size.


Step 5: Follow the Road bike Frame Chart

Finally, you can now proceed to the chart for knowing the exact size of the bike. And, the frames are generally measured from C-T size. The top point at the seat clamp and the bottom corner of the frame are calculated accordingly. This indicates the size. The chart below shows the relation between these two measurements.

The Height of Rider’s Frame Size of the Road Bike
Feet/Inches Centimeters Centimeters Size
4`10”-5`0” 148-152 cm 47-48 cm XXS
5`0″-5`3″ 152-160 cm 49-50 cm XS
5`3″-5`6″ 160-168 cm 51-52-53 cm S
5`6″-5`9″ 168-175 cm 54-55 cm M
5`9″-6`0″ 175-183 cm 56-57-58 cm L
6`0″-6`3″ 183-191 cm 58-59-60 cm XL
6`3″-6`6″ 191-198 cm 61-62-63 cm XXL

By following the above steps, you can easily identify the most appropriate and suitable road bike for your everyday uses.

Customizing the Bike Frame

In some road bikes, there is an opportunity of functioning with the frame. You can increase the size by dealing with bolts and screws. The cranks are meant to be changed in these road bikes.

However, the durability of these road bikes is thoroughly questionable. Sometimes, they are found fragile and less stable. You should always go for the fixed bike frame according to the charts to enjoy the maximum fun during the next ride to the office.


Did It Help You? Let Us Know!

This process is followed by millions of bikers around the world. It should probably help you in deciding your bike frame size. We are eager to know your opinion. Also, you are free to suggest anything regarding the process.

Get the most suitable road bike from the shop according to the frame size. Was the bike chart table helpful? Leave a comment in the below for connecting with us. Thank you.

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