Saddle Size Calculator

Saddle sizing is primarily determined by your sit bone width (ischial tuberosity distance). Unlike frame sizing, saddle width isn't related to your height – a tall rider might need a narrow saddle while a shorter rider might need a wide one. See our saddle comfort tips for advice on assessing saddle comfort.

The correct saddle width ensures your sit bones rest on the widest part of the saddle, distributing pressure properly and preventing soft tissue discomfort. Too narrow causes pressure on soft tissue; too wide causes inner thigh chafing. For an alternative width estimate and brand-width references, try the dedicated saddle width tool. Combine proper saddle width with the right saddle height and reach position for a complete bike fit.

Even the perfect saddle width won't be comfortable if positioned incorrectly. Saddle height should allow a slight knee bend at the bottom of the pedal stroke. Most saddles should be level or tilted slightly nose-down (1-3°).

Fore-aft position affects knee alignment and weight distribution. Your kneecap should be directly over the pedal spindle when the crank is at 3 o'clock. Improper positioning can cause knee pain or numbness regardless of saddle width.