Bike Size

bike frame size Image resource: omnicalculator

Road bikes, mountain bikes and hybrid bikes make up three categories of bikes. Buying a bike is like buying clothes. You need to adapt to the needs of the occasion, figure, and function. Whether it's cross-country in the suburbs or racing on the track, as long as you are engaged in cycling, you must choose a bike that is very suitable for you. No matter what kind of bicycle you buy, size is a factor that must be considered. A bike that is suitable for your height and weight will make you comfortable and enjoy more riding fun.

The bike size and rider height recommendations for various bicycles are listed below

Mountain Bike Size

Rider Height(cm/ft/in) Suggested Frame Size
centimeters(cm) Feet and Inches(ft & in) Frame Size(cm) Frame Size in centimeters
148 - 158 4′10"-5′2" XS 13 - 14
158 - 168 5′2"-5′6" S 15 - 16
168 - 178 5′6"-5′10" M 17 - 18
178 - 185 5′10"-6′1" L 19 - 20
185 - 193 6′1"-6′4" XL 21 - 22
193 - 198 6′4"-6′6" XXL 23 - 24

Women's Mountain Bike Size

Rider Height(cm/ft/in) Suggested Frame Size
centimeters(cm) Feet and Inches(ft & in) Frame Size(cm) Frame Size in centimeters
148 - 158 4′10"-5′2" XS 13 - 14
158 - 168 5′2"-5′6" S 15 -16
168 - 178 5′6"-5′10" M 17 - 18
178 - 185 5′10"-6′1" L 19+

Road Bike Size

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

Women's Road Bike Size

Rider Height(cm/ft/in) Suggested Frame Size
centimeters(cm) Feet and Inches(ft & in) Frame Size(cm) Frame Size in centimeters
147 - 155 4′10"-5′1" XXS 44 - 45 -46
155 - 160 5′1"-5′3" XS 47 - 48 - 49
160 - 165 5′3"-5′5" S 50 - 51 -52
165 - 172 5′5"-5′8" M 53 - 54 -55
172 - 180 5′8"-5′10" L 56 - 57

Hybrid and Fitness Bike Size

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

Children's Bike Size

Rider Height(cm/ft/in) and Age Suggested Wheel Diameter
Age(year) Height in centimeters Height in feet & inches Inside Leg/inseam(min) Suggested Size(Wheel Diameter)
under 2 up to 90 cm up to 3" Balance Bikes
2- 4 90 cm - 105 cm 3' - 3'5" 40 cm 12"
4- 7 105 cm - 118 cm 3'5" - 3'9" 46 cm 14" - 16"
7- 10 118 cm - 135 cm 3'9" - 4'5" 53 cm 18" - 20"
10- 13 135 cm - 150 cm 4'5" - 5' 62 cm 24"
13+ 150 cm+ 5'+ 69 cm 26"- 27.5"

How to judge whether the size of the bike is appropriate?


Correct saddle height and sitting posture Image resource Ride1Up


More bike size reference chart

1. Road Bike Sizing Chart

Amazon road bike fit guide Image resource Amazon


2. Road Bike Sizing Chart

Amazon mountain bike fit guide Image resource Amazon


3. Kids's Bike Sizing Chart

Amazon kids' bike fit guide Image resource Amazon


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