Kids Bike Size Chart- How To Choose The Perfect Kid Bike? – Full Guide For Parents 2023

Kid Bike Size Chart

So your child requires a new bicycle. But you’re wondering what size bike my child requires. Manufacturers divide their Kids Bike Size based on the size of the wheels, but that isn’t the only factor they consider. Worse, it isn’t even the most important thing! 

Finding a bike that fits does not have to be difficult. BSXInsight will assist you in all things.

What Age Can a Kid Ride a Bike?

What Age Can a Kid Ride a Bike

Your youngster will have reached a significant developmental milestone when they master the art of riding a bicycle.

Between the ages of two and eight, the vast majority of kids are at an age where they are ready and motivated to learn how to ride a bike.

In most cases, the typical age of acquisition of knowledge is just a little bit older than five.

Having said that, there are many stages of learning, and some youngsters may start learning even sooner on ride-on vehicles or balancing bikes before they get their first “real” bike.

Kids Bike Size Chart & Frame Size

It is important to keep in mind that this is only the first step in the process. Make use of this chart to obtain a general idea of which size bike would be acceptable for your child, but make sure not to miss any of the stages that are offered further down the page!!!!

It is essential, when purchasing a bicycle for a child, to take into consideration not only their height but also their inseam in order to obtain the bicycle that will provide them with the greatest level of ease when riding it.

Wheel sizeAgeHeightInseam

Finding the Right Size Bike for Your Kids Guide

Finding the Right Size Bike for your Kids Guide

What About Wheel Size?

Typically, the wheels on a child’s bike will determine the overall size of the bike. The wheels on the smallest pedal bikes measure 12 inches in diameter, while those on the largest pedal bikes measure 24 inches.

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Most children who are ready for an adult-sized bike will ride best on a bike with a frame that measures at least 26 inches in diameter, but some manufacturers offer 26-inch bikes in “youth” sizes for younger riders.

Wheel sizes of 12 or 14 inches are more typical, but 10-inch wheels are an option for balance bikes.

Your child’s wheel size is the most reliable indicator of the size of the bike they should have. I use the word “probably” because we’re basing our estimate on a variety of ages for typically-sized children.

Your child may need a bike that is either smaller than what we recommend here or larger than what we recommend here depending on their size.

This is just a rough guide to help you determine the size of the wheels your child will MOST LIKELY need.

Measure Your Child’s Height and Inseam

  • Encourage your kid to put on their shoes and stand with their feet slightly apart, with their back to the wall.
  • Put a hardcover book between their legs with the spine facing the crotch.
  • Raise the book so that its spine hits them firmly in the crotch.
  • The inseam is the distance that is measured from the floor all the way up to the spine of the book when the book is placed flat on the floor.

Look Up the Specs for The Bike (or Bikes) You are Interested In

Look Up the Specs for the Bike (or Bikes) You are Interested In

If you think your child needs a 14-inch bike, that doesn’t mean all 14-inch bikes will fit.

Stand-over heights and minimum and maximum seatpost heights vary by bike model. Find the best bike for your child.

Some bike companies don’t specify height requirements. If so, compare the pants’ length to your child’s inseam. The standover height is the distance between the ground and the top tube of the bike frame when your child stands with one leg over each side of the bike.

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This means that your child’s inseam height needs to be AT LEAST the same as the standover height. It would be better if there was a bit more room than that so that your child could easily ride the bike.

The minimum seatpost height is another important metric that you should look up for any bike you are thinking about buying.

When choosing a bike for your child, how the minimum seatpost height compares to their inseam depends on whether you are buying a balancing bike, a first pedal bike, or a pedal bike for a good pedaler.

Make sure the minimum seatpost height is less than your child’s inseam when buying a balancing bike. It’s recommended.

The ability to put both feet flat on the ground will help your child balance and scoot. To ride a bike with a 12-inch seatpost, the child must have a 12-inch inseam. Look for a bike with a lower minimum seatpost height.

If this is your child’s first pedal bike, make sure their inseam is at least the minimum seatpost height and there is no more than an inch between their legs. Kids who haven’t learned to ride a bike will want both feet on the ground. They can “scoot” and stay stable with this.

If your child can pedal without training wheels, choose a bike with a seatpost one to three inches higher than their inseam. Your child will be able to touch the ground with their toes, but they won’t be able to put both feet flat on the ground.

Why Size Isn’t The Only Thing That Matters

Sure, a kid’s bike’s size is the first thing to think about, but it’s not the only thing. After figuring out the right frame size for your kid, think about the bike’s weight (a major consideration), geometry, brakes, tires, whether or not to use training wheels, and so on.


Look Up the Specs for the Bike (or Bikes) You are Interested In

What Mountain Bike Size Fits Me?

Check the standover height and measure your inseam to make sure the item will fit.

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Both your inseam and your standover height need to be within the specified parameters. (If you have a 30-inch inseam, for instance, a mountain bike with a 28-inch standover height will be most comfortable for you.)

What’s the best kids’ bike to get my child?

We can recommend you some of the best bikes for your child right now:

Should my kids’ bike have gears?

Bicycle gears improve efficiency and make it simpler to pedal up hills. If you live in or plan to visit an area with hills, it is recommended that you purchase a bike with gears.

What’s with these different kids’ bike brakes?

There’s no wrong choice between a coaster brake bike and a hand brake bike.

If your child is interested in mountain biking or BMX, or if your family does a lot of cycling, I recommend going with the hand-brake only option rather than choosing a bike with both options so that your child can get some practice using a hand brake.

Your child will need practice using a hand brake, so if you do decide to purchase a bike with only a hand brake, make sure the levers are within easy reach.

Ensure that they have received adequate training and guidance on how to use them. If your child has already mastered using a hand brake while riding a balance bike, this may be the best choice for them.


We spent some time working on this guide, and We hope you find it useful in determining your child’s appropriate bike size. You should now know how to determine the right size bike for a child, how to accurately measure a child’s frame, and what to look for in a new child’s bike.

Remember to include a bike lock when shopping for a child’s bicycle. Thanks for reading!

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