Bike Frame Size Calculator

Getting the right bike frame size is the most important factor when it comes to maximizing your comfort and performance on the bike.

Luckily, bike sizing is easy! Our bike size calculator will tell you what size bike you need.

Choose the type of bike you’re interested in, and then simply enter your height and inseam measurements. We’ll explain how to do that on the next page.

Our bike sizing calculator will then show you a bike frame size chart with the recommended sizes you should consider based on the measurements you’ve entered!

Choose a bicycle type:

Why Is It Important to Choose the Correct Bike Frame Size?

Picking the correct frame size is the most important step in bike fitting. If you start with the wrong size, getting the perfect fit and maintaining the intended ride and handling characteristics is almost impossible.

The benefit of using a bike size chart or calculator to find the correct frame size is that you can optimize comfort and performance and reduce the likelihood of injury.

Riding on a frame that's too small or large will decrease efficiency, meaning more wasted energy. In addition, it will be uncomfortable over time and potentially lead to muscle imbalances and injuries such as back, neck, or knee issues.

Regardless of the frame you choose, you'll likely need to make further adjustments to get the perfect fit, but if the size is correct, these will be minimal, and you shouldn't need to replace components to achieve a comfortable position.

When riding a bike that's too small, your upper body is bunched-up, you're unable to get full leg extension and maximize power transfer, and you have poorer control of the bike. The result is a greater risk of injury, discomfort, diminished performance, and a higher likelihood of losing control.

Likewise, riding on a frame that's too large requires you to over-stretch to the handlebars and lower the saddle so that the intended geometry is wrong. Again, this can lead to back, neck, and shoulder pain, loss of efficiency, and poorer handling.

What Size Bike Frame Do I Need?

The best way to find the correct frame size is to use a bike size chart or bike sizing calculator. Each person has a different combination of limb and torso length, so using as many of your body measurements (inseam, height) as possible will give you the most accurate result.

For example, if you have a shorter inseam than average for your height, you may need a size smaller than you expect.