Bike Frame Sizing Guides

Frame size labels are a starting point, not a complete description of fit. Measure your height and inseam, record the saddle and handlebar positions that work for you, and compare stack, reach and standover for the actual models under consideration. The guides below explain the measurements and help narrow your options. Use the calculator as an initial reference, then check the geometry chart, cockpit adjustment range and seatpost arrangement before choosing a size or transferring your current setup.

Start Here: Measure Before Choosing a Size

Reading a bike size chart

Begin with the measurements used in frame-size selection and understand why labels differ between models.

Measuring inseam for a gravel build

Collect a consistent inseam measurement before comparing candidate sizes and checking the geometry chart.

Try the frame size calculator

Get an initial size reference, then confirm the result against the model’s geometry and your preferred riding position.

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