How To Measure A Kids Bike Exclusive 3 Tips And Tricks

Peter Simms // Last Updated on September 28, 2023

Getting a bike for your little loving kids may seem effortless at first glance, but it is not like that. Parents need to consult a trusted size guide carefully because kid's bikes are indeed measured in wheel size (not frame size). To find the one that fits you best, you need to know "how to measure a kids bike".

Hi Katie! So glad our site can be useful and resourceful to you! ---There is a saying, “Choosing a bike is like choosing shoes.”

Measuring the leg size is undoubtedly the most significant feature in deciding what bike to buy. On the other hand, buying the wrong size of bike would not give you a relaxed, comfortable, safe, and fun ride. Please do not buy an oversized bike for your boy or girl, considering that he or she will grow into it.

A bike that is too big would make riding troublesome and less enjoyable for your kid, as it would be hard to control him. Besides, it might lower his confidence and even lead to accidents or injuries.

So to help you out, let's take a look at some tips on how to measure the right size of bike for your loving kids.

How to Size a Kids Bike

It is not your responsibility if you feel bored about how bikes are measured. The bike manufacturer comes with various sizing combination for each type of bikes. All the road bikes, mountain bikes, and kids' bikes have their measuring systems.

  • Generally, road bike frame size shows the length of the top tube in centimeters (cm).
  • Mountain bike frame sizes show the length of the seat tube and
  • kids bikes show the diameter or thickness of the wheel (in inches)

Did you know about the power wheels 24v motor upgrade? If not, then check out this link for the kid's bike racing update.

A Guide: How to Measure a Kids Bike

"Cycling & childhood is vice versa." – (In case as a course for fun or transport).

The right bike size plays a significant role when it comes to choosing a bike for your kid. Here are some facts which will help you to choose the right bike size.

  • Measure kids bike size by inseam
  • Measure kids bike size by height and
  • Measure kids bike size by age

Let's share in-depth research over the facts and features above-mentioned. Want to know what size remote control ride on car would be best for your kids? check this link right here now.

Fact 1 - Measure Kids Bike Size by Inseam

The best way to get the perfect bike size is to measure the inseam of your child. The right frame size is the only way to make sure that your kid's feet touch the ground quickly and safely at the minimum saddle height.

Wheel size (Inch)

Inseam length (Inch)

26 inches

28 inches and longer

24 inches

24 to 28 inches

20 inches

22 to 25 inches

18 inches

20 to 24 inches

16 inches

18 to 22 inches

14 inches

16 to 20 inches

12 inches

14 to 17 inches

10 inches

12 to 14 inches

Note: It is better to choose a larger wheel which has more stability and allow more space for growth.

Fact 2 - Measure Kids Bike Size by Height

The height of your kid's body is another significant factor when it comes to choosing the perfect bike for your child. Even though kids with natural development have a relationship between stride length & height, you need to take the endeavor & measure the bike size yourself by height.

Wheel size (Inch)

Child height (Inch)

26 Inches

5 Inches and taller

24 Inches

 4.5 to 4.9 inches

20 Inches

4.0 to 4.5 inches

18 Inches

3.8 to 4.0 inches

16 Inches

3.7 to 3.8 inches

14 Inches

3.3 to 3.7 inches

12 Inches

3.1 to 3.3 inches

10 Inches

2.9 to 3.1 inches

Note: “You will find different bikes with different seat-post heights and stand-over heights. It is wise to go for a bike which is a good fit for your child” – Expert's saying.

Fact 3 - Measure Kids Bike Size by Age

The age of your child helps you to choose the right bike wheel size. Kids between three to five (3 to 5) years of ages can use bikes (12" wheels) comfortably. This trick works well when you go for shopping without tape for measuring. However, we have made a chart concerning kids' bike size by age.

Wheel size (Inch)


11 to 14 years

26 inches

9 to 11 years

24 inches

7 to 9 years

20 inches

6 to 8 years

18 inches

5 to 6 years

16 inches

4 to 6 years 

14 inches

3 to 5 years

12 inches

2 to 4 years

10 inches

Pro Tip: According to Automotive expert, the diameter of wheels makes sense of what size of the bike is ideal for your kiddos.

Note: We have an expert team for kids' bike selection which will meet the age & requirements of your child.

Why Need Measure Kids Bike?

  • Choosing the right size bike could be the best gift for your loving child.
  • A well fit bike is a door to open a new level of independence for your kiddos.
  • It could be the best way to explore the world.
  • It helps your child to stay healthy and fit.
  • Properly sized Kids bike is the best way to make a strong family
  • It could be the best transport for your school-going child.
  • Riding a perfect sized bike increase the motor skills of your young child

Pro Tip: Choosing a balance bike is the best option for your young kids. Check out here “what is a balance bike” and “why it would be the first choice for your child.”

Note: According to the child expert (Mood Disorders Center; Child Mind Institute)riding a bike that is well sized and balanced is the practical way to keep your child away from the TV or playing video games.

According to child journal, every year, nearly 99 children are killed and 25400 injured while they are riding. These accidents could have been stopped if they have the right-sized bike and possessed the knowledge on how to ride them safely. So if you are a parent who would like to choose the right sized bike for your child, then measuring kids’ bike is a must-have solution.

In this regard, we hope this guide "how to measure a kids bike" could be a valuable source when it comes to kids' bike size. Thanks for reading this article. How does the bike feel when you take it for a test ride? Is the bike easy to control for your child? Or do you feel comfortable about the size of your kids' bike? If so, then your goal is to measure the kid's bike that suits your child best.