Enter the rise and run of a roof into the calculator to determine the pitch percentage. The pitch percentage represents the steepness of a roof.

Pitch Percentage Formula

The following formula is used to calculate the pitch percentage of a roof. 

Pitch = left(frac{Rise}{Run}right) times 100

Variables:

  • Pitch% is the pitch percentage (%)
  • Rise is the vertical height of the roof (inches)
  • Run is the horizontal length over which the rise occurs (inches)

To calculate the pitch percentage, divide the rise of the roof by the run and then multiply by 100 to convert it to a percentage.

What is Pitch Percentage?

Pitch percentage is a way of expressing the slope of a roof. It is calculated by dividing the rise of the roof by the run, which is the horizontal distance over which the rise occurs. The result is then multiplied by 100 to get a percentage. This measurement is important for architects, builders, and engineers when designing and constructing buildings, as it affects factors such as drainage, aesthetics, and structural integrity.

How to Calculate Pitch Percentage?

The following steps outline how to calculate the Pitch Percentage.

  1. First, measure the rise of the roof, which is the vertical height (Rise) in inches.
  2. Next, measure the run of the roof, which is the horizontal length (Run) in inches.
  3. Use the formula from above to calculate the Pitch Percentage (Pitch%) = (Rise / Run) * 100.
  4. Finally, calculate the Pitch Percentage.
  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.

Rise of the roof (Rise) = 6 inches

Run of the roof (Run) = 12 inches