The Guide to Kids' Bike Sizes by Height and Age

Kids bicycles come in many different wheel sizes, including 12″, 16″, 18″, 20″, and 24″. It can be hard to decide which bike size is right for your growing child.

Kids' bike sizes are best determined by wheel size. The wheel size of children’s bicycles directly correlates with the frame size of the bike; as the wheel size increases so does the frame size of the bicycle. You can often make a good estimate for what size bike your child will need based upon their age, but with children going through growth spurts and variations in height, it is always best to measure your child’s actual height to find the perfect bike fit for them. Of course, you should have your child test ride the bike first if possible.

Kids' Bike Size Chart

Our kids' bike size chart will help you determine the correct size bicycle that your child needs. It is the perfect place to start if you want a better idea of where your child might land based on their height and age.

A Note on Schwinn SmartStart

Parents are often concerned that their child will grow out of a bicycle too quickly. Schwinn SmartStart is our solution to help your child’s bike “grow” with them. When the saddle of a Schwinn SmartStart bicycle is raised, the angle and the distance from the seat to the handlebars, and seat to the pedals also increase.

This means your child’s bike will grow alongside your child. All Schwinn kids bikes from size 12” - 20” now come with SmartStart technology, as designated by the SmartStart logo on your child’s bike.

One of the greatest memories a child can have is when they first learn how to ride a bike and a well-fitted bike means that a child will be more comfortable, and being comfortable is the first step to inspire confidence and the motivation to learn.

Learn more about the benefits of the Schwinn SmartStart bicycle line by watching the video below and checking out our Schwinn SmartStart page.