Bike Sizing Guide

Which Size Bike Does My Child Require?

Children's bikes are generally measured by wheel size, rather than by frame size. Remember children do grow very quickly and you need to take this into consideration when buying a kids bike, However, if you buy a bike that is simply too big for your child, you will compromise your child's safety, and ultimately discourage your child from cycling.

Age of ChildWheel Size
3 Years12"
4 Years14"
5 Years16"
6 Years18"
7/8 Years20"
8/10 Years24"

Which Size Bike Do I Require?

Adults bikes and those for 10/11 years and over, are generally measured by frame size. This is normally the measurement between the center of the bottom bracket to the top of the seat tube.

Riders Height In Feet & InchesMainly Off Road Use Frame Size RequiredMainly On Road Use Frame Size RequiredRoad Racing Bikes Frame Size Required
4 feet 8 to 5 feet 012 to 14 inches13 to 15 inches46 to 48cm
5 feet 0 to 5 feet 414 to 16 inches15 to 17 inches48 to 50cm
5 feet 4 to 5 feet 816 to 18 inches17 to 19 inches50 to 52cm
5 feet 8 to 6 feet 018 to 20 inches19 to 21 inches52 to 56cm
6 feet 0 to 6 feet 220 to 22 inches21 to 23 inches56 to 60cm +