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Choosing the right frame size

In order to cycle comfortably it is very important that you purchase a bike with the right frame size. For children too, the correct frame size is very important. For children, cycling safely is largely determined by having a bike which is the right size.
Can they easily touch the ground with their feet for an emergency stop?

There are different ways to calculate the right bike size. Let's go through them:

  1. What is a frame height?

We mainly talk about frame height for adult bikes, and sometimes children's bikes. Frame height means the height of the frame. This is measured as follows:

Take the distance from the top of the frame tube into which the saddle is inserted (the seat tube) and measure the length of this seat tube up to the middle of the crank (bracket: the round hole beneath the frame where the crank and the pedals are mounted). This length in centimetres is the bike's frame height. This is represented as follows: 57cm.

  1. What is the wheel size?

Mainly for children's bikes, and sometimes for adult bikes, we talk about wheel size when talking about the bike size. The wheel size is indicated in inches (") A specific age category is attributed to the wheel size.

  1. What is the clothing size?

For children's bikes their clothing size (see certain items of children's clothing) is linked to a certain age category.

  1. Want to work out your frame size yourself?

It's easy to work out your frame size yourself. Take the inside leg measurement of one of your legs. Do this by standing barefoot with your feet about 20 cm apart. Multiply the length by 0.65 for a city bike and hybrid bike.
For a racing bike or all-terrain bike, multiply it by 0.66.

For example:

City and hybrid bike: your inner leg measurement is 90cm. Then your frame size is: 0.90cm x 0.65 = 58.5 cm.

Racing bike and all-terrain bike: Then your frame size is: 90cm x 0.66 = 59cm.

Naturally you can always adjust your saddle a little higher or lower using the saddle pin to reach the correct comfortable height. Working out a frame size is of course a theory. In practice, you need to work out the best and most comfortable way for you to cycle.

PLEASE NOTE: These days many city and hybrid/sports bikes are produced with a saddle pin that has springs. The springs in the saddle pin raise the height of the bike by about 4 cm. If you buy a bike like this, you need to reduce your frame size by 4 cm.

Example: We determined above that in this example, your frame size should be 58.5 cm for a city bike. If the bike is produced with a saddle pin that has springs, then the frame size will be: 58.5cm – 4.0cm = 54.5cm.

Size charts

Below you will find a number of charts which are simple to use, following the explanation above.

Children's bicycles

Clothing size age wheel size
92 age 2 - 4 12"
98 age 3 - 4 12"
92 age 4 - 5 14"
98 age 4 - 5 14"
104 age 4 - 6 16"
110 age 4 - 6 16"
116 age 5 - 8 20"
122 age 5 - 8 20"
128 age 6 - 9 20"
134 age 8 - 10 24"
140 age 8 - 10 24"
146 age 9 -12 26"
152 age 9 - 12 26"
>158 age 10 - 12 28"

City bikes

Women

Height

frame size without
saddle pin with springs

frame size with
saddle pin with springs

155 – 165cm 43 – 47cm 39 – 43cm
165 – 170cm 45 – 49cm 41 – 45cm
170 – 175cm 49 – 53cm 45 – 49cm
175 – 180cm 53 – 57cm 49 – 53cm
180 – 185cm 55 – 57cm 51 – 53cm
185 – 190cm 57 – 61cm 53 – 57cm
190 – 195cm 59 – 61cm 55 - 57cm
195 – 200cm 59 – 61cm 55 - 57cm

Men

Height

frame size without
saddle pin with springs

frame size with
saddle pin with springs

155 – 165cm 47 – 49cm 43 – 45cm
165 – 170cm 49 – 51cm 45 – 47cm
170 – 175cm 51 – 53cm 47 – 49cm
175 – 180cm 53 – 57cm 49 – 53cm
180 – 185cm 55 – 57cm 51 – 53cm
185 – 190cm 56 – 61cm 52 – 57cm
190 – 195cm 61 - 63cm 57 – 59cm
195 – 200cm 63 – 65cm 59 – 61cm

All-terrain bikes – Mountain bikes

Height frame

size in inches

frame size in cm

155 – 165cm 14 -16inch 35 - 41cm
165 – 170cm 16 - 17inch 41 - 44cm
170 – 175cm 18 – 19inch 44 – 48cm
175 – 180cm 19 – 20inch 48 – 51cm
180 – 185cm 20 – 21inch 51 – 52cm
185 – 190cm 21 – 22inch 52 – 54cm
190 – 195cm 22 – 23inch 54 – 56cm
195 – 200cm 23 – 24inch 56 – 61cm

Racing bike

Height

frame size in cm

155 – 165cm 47 – 50cm
165 – 170cm 50 – 52cm
170 – 175cm 52 – 55cm
175 – 180cm 55 - 58cm
180 – 185cm 58 – 61cm
185 – 190cm 60 – 62cm
190 – 195cm 61 – 63cm
>195 take specific measurements
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