Hamley Method

Saddle Height Calculator

An alternative to LeMond that targets 25–30° knee flexion at the bottom of the pedal stroke — preferred by racers and fitters seeking maximum power output.

Saddle Height Calculator (Hamley Method)

Inseam Length

Units

How to measure: Stand barefoot with your back against a wall. Place a book between your legs as high as comfortable (mimicking a saddle). Measure from the top of the book to the floor.

What is the Hamley Method?

Based on biomechanical research and favoured by many professional bike fitters. The formula aims for a slightly greater leg extension than the LeMond method.

Inseam (cm) × 1.09 = Saddle Height (cm)

Measured from center of bottom bracket to top of saddle, along the seat tube.

1.09 vs 0.883 — Key Differences

Multiplier Difference

The Hamley method (1.09) typically produces a saddle height approximately 2–3 cm higher than the LeMond method (0.883) for the same rider.

Biomechanical Target

Hamley targets a specific knee angle (25–30°) at the bottom of the pedal stroke, while LeMond uses a fixed percentage of inseam.

Neither is Correct

Both are starting points that may suit different riding styles and biomechanics. Your ideal height may fall between the two methods.

Which Method Should You Use?

LeMond (0.883)

More upright position

Flexibility limitations

Knee pain with higher saddle

Endurance riding

Hamley (1.09)

Racing & time trials

Maximum power output

Good flexibility

Aggressive position

Calculate your height using both methods and test ride at each position. Your ideal height may fall somewhere in between.

Video Analysis

Have someone record you from the side while pedaling. At the bottom of the pedal stroke, your knee should have a slight bend (approximately 25–30 degrees). If your leg is completely straight or your hips rock, your saddle is too high.