Choosing the Perfect Fit: A Comprehensive frame size chart for Bicycles
Cycling is a great form of exercise and an enjoyable pastime that can be enjoyed by people of all ages. When it comes to bikes, however, one size does not fit all. Before buying a new or second-hand bike, it is essential to select the right frame size for the rider’s body type so that they can optimise their cycling comfort and performance. To ensure that you select the perfect-fitting bike, here is a comprehensive overview of frame sizes and a helpful frame size chart.
The frame size of a bicycle is measured from the center of the cranks up to the top of the seat tube. It is typically indicated in centimetres or inches. In general, smaller frames fit people of smaller heights, while larger frames fit taller individuals.
To get an accurate measurement of the bike frame size you need, begin by measuring your inseam. Stand against a wall and measure from the floor to your groin with a measuring tape, and compare the resulting measurement to the frame size chart. If in doubt, take several measurements as your inseam size may vary depending on the type of pants you usually wear.
For cyclists with especially short heights, there are specifically designed bikes referred to as “kid’s bikes.” These bikes usually come with wheels ranging from 14” to 24” for people with inseams ranging from 18” up to 28”. Once you have identified your ideal frame size, it is time to look for a bike and determine its geometry.
Bike geometry can vary greatly, even more so than the frame size. For instance, a bike’s top tube slopes differently if the frame is designed for racing, touring, or city riding. As such, it is important to pay close attention to this aspect of bike selection when looking to buy a bike. Additionally, all bikes come with various features for different styles of cycling. Some may come with extra mounting features for easy storage, different tyre widths, certain pedal types, suspension, and more.
Below is a helpful frame size chart for adult bikes with a wheel size of 26” and higher.
Frame Size Inseam (in cm)
13″ 76–78
14″ 79–83
15″ 83–85
16″ 85–89
17″ 89–92
18″ 93–96
19″ 96–99
20″ 99–101
21″ 102–105
22″ 106–109
23″ 109–113
Each of the specific frame sizes may also have different configurations due to differences in frame design. Therefore, before you purchase a bike, it is important to try it out first. You also get the chance to observe how the frame design affects your performance and riding experience.
It is also best to consult a bike shop manager or a certified bike fitter for additional advice and further guidance. While choosing your frame size can be a daunting task, having the appropriate size can make a world of difference in your cycling experience.
Happy cycling!