Rigid Fork Axle-To-Crown Calculator

Use this calculator to determine the ideal rigid fork axle-to-crown length needed to maintain the bike’s geometry in a neutral riding position when changing a suspension fork to a rigid fork. If changing from a rigid fork to a suspension fork, I recommend using the Hardtail Geometry At Sag Calculator¬†with the rigid bike as the current bike (left column) and experiment with suspension fork options to approximately match the sagged geometry (right column) with the current rigid geometry.