Q:

How do you determine what size bike frame you need?

A:

Quick Answer

For precise data on the right size bike frame, use the Bicycle Frame Size Calculator by eBicycles. This tool takes the gender, height and leg length of the rider and suggests specific measurements for the size of the bike frame and crank. A quick way to determine the right size bike frame is by measuring the length of the inseam of your leg and choosing a bicycle frame with a “stand over height” measurement at least 1 inch shorter.

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Full Answer

The type of bicycle you want makes a difference in the optimal measurements for the bike frame. For example, the Bicycle Frame Size Calculator tool gives the options of road bike, mountain bike, BMX bike and kid's bike. Keep in mind that many manufacturers measure road bicycles in centimeters. For reference, the frame measurement is the length of the seat tube as measured from the top of the seat tube to the bottom bracket. The crank size is the measurement from the center of the pedal hole to the center of the axle. A longer crank means more leverage.

Some additional tips for taking accurate height and leg length measurements are to wear the shoes you normally cycle in while measuring and to measure the leg length from where the heel makes contact with the ground to the base of the leg.

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