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 Child

Wheel Size

3 Years

12"

4 Years

14"

5 Years

16"

6 Years

18"

7/8 Years

20"

8/10 Years

24"

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 centre of the bottom bracket to the top of the seat tube.


Riders Height In Feet & Inches

Mainly Off Road Use Frame Size Required

Mainly On Road Use Frame Size Required

Road Racing Bikes Frame Size Required

4 feet 8 to 5 feet 0

12 to 14 inches

13 to 15 inches

46 to 48cm

5 feet 0 to 5 feet 4

14 to 16 inches

15 to 17 inches

48 to 50cm

5 feet 4 to 5 feet 8

16 to 18 inches

17 to 19 inches

50 to 52cm

5 feet 8 to 6 feet 0

18 to 20 inches

19 to 21 inches

52 to 56cm

6 feet 0 to 6 feet 2

20 to 22 inches

21 to 23 inches

56 to 60cm +