Sizing Guides

Sizing for a bike is never black and white it seems, and with individual manufacturers offering their own recommended sizing, the lines can quickly become blurred for a would be buyer. Here you can find a generic sizing chart as well as manufacturers sizing charts for all types of bike.

The most accurate way of finding your ideal frame size is to measure your inseam length in inches (from in between your legs straight down to the floor) and multiply by 0.59 for Mountain Bikes, 0.68 for Road and Trekking bikes or 0.64 for the Hybrid Bikes.

This method should be used as well as checking rider height with the following charts to judge the best size between them. The height charts on their own often over-estimate the frame size required.

 

Mountain bike sizing chart (hardtail & full suspension)

Rider Height
Frame Size Suggested
Feet and Inches
Centimetres
Inches
Size
4' 10" - 5' 2"
148 - 158
13 - 14
XS
5' 2" - 5 '6"
158 - 168
15 - 16
S
5' '6" - 5' 10"
168 - 178
17 - 18
M
5' 10" - 6' 1"
178 - 185
19 - 20
L
6' 1" - 6' 4"
185 - 193
21 - 22
XL
6 '4" - 6' 6"
193 - 198
23 - 24
XXL

Women's mountain bike sizing chart (hardtail & full suspension)

Rider Height Frame Size Suggested
Feet and Inches Centimetres Inches Size
4' 10" - 5' 2" 148 - 158 13 - 14 XS
5' 2" - 5 '6" 158 - 168 15 - 16 S
5' 6" - 5' 10" 168 - 178 17 - 18 M
5' 10" - 6' 1" 178 - 185 19+ L
 
Please note
Women's mountain bikes have specific differences to men's mountain bikes.

Hybrid bike sizing chart

Rider Height Frame Size Suggested
Feet and Inches Centimetres Inches Size Centimetres
4' 10" - 5' 1" 147 - 155 13 - 14 XS 47 - 49
5' 1" - 5' 5" 155 - 165 15 - 16 S 50 - 52
5' 5" - 5' 9" 165 - 175 17 - 18 M 53 - 54
5' 9" - 6' 0" 175 - 183 19 -20 L 55 - 57
6' 0" - 6' 3" 183 - 191 21 - 22 XL 58 - 61
6' 3" - 6' 6" 191 - 198 23 - 25 XXL 61 - 63

Road bike sizing chart

Rider Height Frame Size Suggested
Feet and Inches Centimetres Centimetres Size
4' 10" - 5 '0" 148 - 152 47 - 48 XXS
5' 0 "- 5' 3" 152 - 160 49 - 50 XS
5' 3" - 5' 6" 160 - 168 51 - 52 - 53 S
5 6" - 5' 9" 168 - 175 54 - 55 M
5' 9" - 6' 0" 175 - 183 56 - 57 - 58 L
6' 0" - 6' 3" 183 - 191 58 - 59 - 60 XL
6' 3" - 6' 6" 191 - 198 61 - 62 - 63 XXL
 

Women's road bike sizing chart

Rider Height Frame Size Suggested
Feet and Inches Centimetres Centimetres Size
4' 10" - 5' 1" 147 - 155 44 - 45 - 46 XXS
5' 1" - 5' 3" 155 - 160 47 - 48 - 49 XS
5' 3" - 5' 5" 160 - 165 50 - 51 - 52 S
5' 5" - 5' 8" 165 - 172 53 - 54 - 55 M
5' 8" - 5' 10" 172 - 180 56 - 57 L

Triathlon and Time Trial bike sizing chart

Rider Height Frame Size Suggested
Feet and Inches Centimetres Centimetres Size
5' 0" - 5' 3" 152 - 160 49 - 50 XS
5' 3" - 5' 6" 160 - 168 51 - 52 S
5' 6" - 5' 9" 168 - 175 53 -54 M
5' 9" - 6' 0" 175 - 183 55 - 56 L
6' 0" - 6' 3" 183 - 191 57 - 58 XL
6' 3" - 6' 6" 191 - 198 60 - 61 XXL

Jump and Trial bike sizing

As a general rule Jump and Trial bikes are one size fits all; catering for people from heights of 4' 10" - 6' 4" (148cm - 193cm). There are a few exceptions to this rule where size options are offered, if this is the case please contact us

Folding bike sizing

As a general rule folding bikes are one size fits all catering for people from heights of 4' 10" - 6' 4" (148cm - 193cm).
 

BMX bike sizing chart

Rider Age or Height Wheel Size Suggested
Feet and Inches Centimetres Age Inches
3' 7" - 4' 0" 110 - 122 5 - 7 years 16
4' 0" - 4' 10" 122 - 147 7 - 11 years 18
4' 10" - 6' 4" 147 - 193 11+ years 20

Children's bike sizing chart

Rider Age or Height Size Suggested
Age Feet and Inches Centimetres  
2 - 5 years 2' 10" - 3' 7" 85 - 110 Runner bikes
2 - 4 years 2' 10" - 3' 4" 85 - 100 12 inch wheel diameter
3 - 5 years 3' 1" - 3' 7" 95 - 110 14 inch wheel diameter
5 - 7 years 3' 7" - 4' 0" 110 - 120 16 inch wheel diameter
7 - 9 years 4' 0" - 4' 5" 120 - 135 20 inch wheel diameter
9 - 11 years 4' 5" - 4' 9" 135 - 145 24 inch wheel diameter
11+ years 4' 9"+ 145+ 26 inch wheel diameter

Trailer bike sizing chart

Rider Age or Height Size Suggested
Age Feet and Inches Centimetres  
3 - 5 years 3' 1" - 3' 7" 95 - 110 20 inch wheel diameter
5 - 9 years 3' 7" - 4' 5" 110 - 135 24 inch wheel diameter