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Bicycle Frame Sizes

Size Matters

The size of a bicycle is typically measured at the frame. The measurement typically more refers to the length of the seat tube, top tube, or the distance from the centre of the bottom bracket to the end of the seat tube.

The tables below show the frame size best suited to your height. The sizes are given either in inches (MTB) or in centimeters, often you will find both units in the description of the bike.

Mountainbike

This table will help you if you do not have the stride length at hand:

Your height
in cm
Recommended frame size
in cm   (in inches)
150 - 155 cm 33 - 36 cm   (13" - 14" inches)
155 - 160 cm 35 - 38 cm   (14" - 15" inches)
160 - 165 cm 38 - 40 cm   (15" - 16" inches)
165 - 170 cm 40 - 43 cm   (16" - 17" inches)
170 - 175 cm 42 - 45 cm   (16.5" - 17.5" inches)
175 - 180 cm 44 - 47 cm   (17.5" - 18.5" inches)
180 - 185 cm 46 - 49 cm   (18" - 19" inches)
185 - 190 cm 49 - 52 cm   (19" - 20.5" inches)
190 - 195 cm 51 - 56 cm   (20.5" - 22" inches)
from 195 cm from 56 cm   (from 22" inches)

Road

This table will help you if you do not have your leg length at hand::

Your height
in cm
Frame Size
Road bike / Singlespeed

in cm
Frame Size
Triathlon

in cm
155 - 160 cm 46 - 49 cm 46 - 48 cm
160 - 165 cm 48 - 51 cm 47 - 49 cm
165 - 170 cm 48 - 50 cm 48 - 50 cm
170 - 175 cm 50 - 52 cm 50 - 52 cm
175 - 180 cm 52 - 55 cm 52 - 55 cm
180 - 185 cm 54 - 56 cm 55 - 57 cm
185 - 190 cm 56 - 58 cm 57 - 60 cm
190 - 195 cm 58 - 61 cm 60 - 62 cm
from 195 cm from 64 cm from 62 cm

City Bike

This table will help you if you do not have your leg length at hand:

Your height
in cm
Recommended frame size
in cm
150 - 160 cm 42 - 48 cm
160 - 170 cm 48 - 52 cm
170 - 175 cm 52 - 55 cm
175 - 180 cm 55 - 58 cm
180 - 185 cm 58 - 61 cm
185 - 190 cm 61 - 63 cm
190 - 195 cm 63 - 66 cm
from 195 cm from 66 cm

Touring, Flat Bar or Hybrid bike

This table will help you if you do not have the stride length at hand:

Your height
in cm
Recommended frame size
in cm
150 - 160 cm 42 - 47 cm
160 - 170 cm 47 - 50 cm
170 - 175 cm 50 - 53 cm
175 - 180 cm 53 - 55 cm
180 - 185 cm 55 - 58 cm
185 - 190 cm 58 - 60 cm
190 - 195 cm 60 - 63 cm
from 195 cm from 63 cm

E-Bike

When purchasing an e-bike it pays to be diligent when it comes to frame sizing - after all, e-bikes will typically carry a higher price-tag than a non-motorised bike. The optimal size of an e-bike can not be summarized in a table, because "e-bike" is merely the generic term for a variety of different categories of bicycles. There are e-city bikes, e-trekking bikes, e-mountain bikes ... the choice is huge.

To find the right size, simply select your e-bike category and find the appropriate frame height in the table for the respective non-motorized bike typep

Kids bikes

Similar to some Adults, Kids can typically fit a broad variety of sizes. The sizes are given in inches and will typically start at 10” and run all the way up to 24”, beyond this your child is typically ready to transition into an adult-sized bike. Understanding kids frame sizes can be difficult, thankfully the chart to the right should point you in the right direction.

A children's bike is also reasonably flexible in size. You can adjust the saddle and the handlebars, to allow the bike to “grow” proportion with your offspring!

Click below for more information about buying children's bicycles:

The Ultimate Kids Bike Buyer’s Guide

Some Disclaimers

Everybody is different, so the values in our tables are only guideline values. For example, women and men differ greatly in their body proportions. The frame sizes are the same for men's bicycles and women's bicycles. However, what clearly differs is the frame geometry. In some cases the top tube is shorter for women's bikes, in simpler terms: the distance from the saddle to the handlebar is shorter to better suit the female physiology.

Additionally, regardless of your gender, different people may have different length arms, legs, reach etc. which can skew the ideal frame size. It’s also worth noting that the size of the wheels can play a role, particularly in Mountain Bikes. The bigger the wheels (29er for instance) the taller the bike is. Our tip: Head into your nearest bike store and try a few different frame sizes out to get a feel for what suits you best!

Between Two Bike Sizes?

If you fall between two sizes, no need to worry! Many bikes have an adjustable stem, so you can change the angle of the handlebars until the bike fits comfortably. And last but not least, the frame size can influence the handling characteristics, so if you’re after a nimble handling frame you can choose the smaller size or if you’re after additional stability, a larger frame may be best for you. Our rule of thumb: The more time you plan on spending on your bike, the more attention you should pay to the size and fit of your bike. A professional bike fit will go a long way to ensuring you’re both comfortable and efficient on the bike and is highly recommended to keep you and your bike performing at their optimum!

BikeExchange Concierge

Confused by the options on offer, or what is the best type of bike for you? With BikeExchange Concierge, we’ll do the leg work for you! Simply head on over to our dedicated Concierge page, fill out your details and we’ll contact you with a range of options to suit your needs, and your budget from leading retailers across the country!