The NEW and BETTER Kids Bike Sizing Guide

Never Buy the Wrong Size Bike Again!

Why do we need a NEW and BETTER guide for kids bike sizing?

Wheel size is the way that bike manufacturers classify their bike sizing, but it’s NOT the only factor! It’s not even the most important factor! Wheel size gives you a very general idea of the size of a bike, but bike frame size and seat height range can vary drastically from one bike to another within the same wheel size.

As a result, your child may fit on a 16″ bike with one brand, but a 20″ bike with another. There are even bike brands that offer small and large bikes within the same tire size.

What’s the best way to find the right size bike for a child?

Using your child’s inseam in relation to the bike’s seat height is the best and most accurate way to ensure a perfect bike fit.  The frame and the tire size work together to determine the seat height of a bike.  So by using selecting a bike based on seat height, versus tire or frame size, you can ensure a properly fitting bike for your child even if they’ve never had a chance to try out the bike before you buy it!

The four steps in the infographic below will help you find the best size bike for your child.

Infographic showing the four steps to finding the right size bike for a child

So where do I find the best bikes and their seat heights?

Not to worry, we’ve got you covered! Most bike companies don’t publish the seat heights of their bikes so we’ve measured the seat heights of over 50 different bikes for you!  You can access seat heights for bikes of all sizes using the comparison charts at the bottom of these pages:

Graphic says 14-inch Bikes for 2 to 4 year olds and shows 4 year old riding Prevelo Alpha One bike

Graphic says 16-inch Bikes for 4 to 6 year olds and shows a 5 year old on the Priority Start 16 bike

Graphic says 20-inch Bikes for 6 to 8 year olds and shows a 7-year-old boy riding the Pello Rover bike

Graphic says 24-inch Bikes for 8 to 11 year olds and shows a 10 year-old girl riding the woom 5 bike

Other Resources

For additional information on kids bike sizing and what other features you should look for when shopping for a bike, check out our article Kids Pedal Bikes: How to Choose.

For young kids that have never ridden a bike, a balance bike is likely a better option for them. Check out Why a Balance Bike Should be the First Bike for Your Toddler.


Two Wheeling Tots
Login/Register access is temporary disabled
Compare items
  • Balance Bike (0)
  • Pedal Bike (0)
  • Bike Trailer (0)
  • Helmets (0)
  • Child Bike Seat (0)
Compare