Guide to Kids' Bike Sizes

Charles Luiting

Kids riding Krate Evo's

Kids' bike sizes are best determined by wheel size. This directly correlates to the frame size: as the diameter of the wheel increases, so does the frame size of the bicycle. You can often estimate what size bike your child will need based on their age, but the best way is go by their height. Kids’ heights can vary quite a bit, what with the growth spurts and all, so using their height instead of age will provide a much more accurate way to determine the appropriate bike size. And of course, you should have your child test ride the bike before purchase when possible.

Check out our handy size chart to determine the right size for your child.

Sizing Guide

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 you raise the seat of a SmartStart bike, the angle and distance between the seat, handlebars, and pedals also increase. This means the bike can still provide a good fit for your child as they grow taller. 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 learning to ride a bike. With a better fit, your child can enjoy faster learning, more confident riding, and more time spent having fun.

Check out our Schwinn SmartStart page.

Schwinn Sting Ray Product Shot
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Sizing Help