Enter the hip and waist measurements into the calculator to determine the saddle width. This calculator can also evaluate any of the variables given the others are known.

Saddle Width Formula

The following formula is used to calculate the saddle width.

SW = H + (0.3 * W) 


  • SW is the saddle width (cm) H is the hip measurement (cm) W is the waist measurement (cm)

To calculate the saddle width, add the hip measurement to 0.3 times the waist measurement. This formula assumes that the saddle width is primarily determined by the hip measurement, but also takes into account the waist measurement to a lesser extent.

What is a Saddle Width?

Saddle width refers to the measurement across the widest part of a bicycle saddle. It is an important factor in determining the comfort and fit of a bike seat. The ideal saddle width depends on the individual’s anatomy, specifically the distance between the sit bones. A saddle that is too narrow may cause discomfort and pressure, while a saddle that is too wide can cause chafing and inefficient pedaling.

How to Calculate Saddle Width?

The following steps outline how to calculate the Saddle Width:

  1. First, determine the hip measurement (H) in centimeters.
  2. Next, determine the waist measurement (W) in centimeters.
  3. Next, use the formula SW = H + (0.3 * W) to calculate the saddle width (SW).
  4. Finally, calculate the Saddle Width.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Hip measurement (H) = 45 cm

Waist measurement (W) = 60 cm