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With this frame calculator you can easily find out which frame size best suits you and helps in making that search for your new bike a breeze! Simply click on the category of bike you're interested in and answer four simple questions – and we'll do the rest!

The Importance of Choosing the Right Frame Size

Knowing and understanding the which is right bicycle size for yourself, or the person you're purchasing for is one of the most important factors to know when buying a bicycle online. The size of a bicycle is often also called frame size or frame height and refers to the frame geometry. It determines the size range in which you can adjust the saddle height and thus your seating position, how long and high the bike will largely dictate how comfortable the bike is to ride, as well as the riding characteristics. Depending on the manufacturer, the frame size is given in CM or from XXS to XXL and includes various factors of the frame geometry. To take the guesswork out of buying your next bike, together with Smartfit, we've put together a simple widget to help you find the right size for your next ride in just 4 steps.

Let's Go.

How you'll find the right frame size

Operating the tool is almost effortless. On the product page, you will find the appropriate size advice for the bike you're browsing at the time, allowing you to calculate your size right there on the page. To use the frame size calculator, simply click on the "Calculate Size' button on the product size (see the image on the right). If the button is not visible, either no size information is available for this product, or you have Javascript deactivated on your browser. If it's more general size advice you're after, rather than the size of a specific bike, use the tool below to calculate the right size for your next bike. To get started, click on the type of bike you're looking for, then enter your height, leg and arm length, and your preferred riding position. Alternatively, you have the option of using the suggested "average" values. It's worth noting, the more information you are able to provide, the more accurate your results will be.

Determine your size here.

Select the category of your bike


MTB Hardtail

MTB Dual Suspension

E-MTB Hardtail

E-MTB Dual-Suspension



Road & Gravel

E-Road & E-Gravel





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.


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)


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

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


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

How to Determine your Frame Size

Determining your stride length is crucial for finding the right bicycle frame size (not your height).

Since different types of bicycles also have different geometries, it's a good idea to reference your stride length against the bike you want to purchase. Simply select the bike type from the overview above! There you will find a separate frame calculator for each bike type. Enter your stride length, and you will receive a recommendation for the optimal frame height for this bike type. Below that, you will find tables that help you to classify the measurements based on your height or to determine the size if you don't have your stride length at hand.

Determining your stride length is very simple if you follow these steps:


Step 1

You need a meter stick or a tape measure.

You also need a book, a notepad, a cutting board, or something similar.


Step 2

Stand barefoot against a wall, or get the lucky person who will be getting a new bike to do so.


Step 3

Place the book/notepad/... between your legs and push it up as far as comfortably possible.


Step 4

Now you only have to measure the distance from the top edge of the book to the floor - and you already know the step length.

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!