Kai Roofing Calculator

Calculate the surface area of your roof

Roof Pitch Calculator

What is the Roof Pitch?

Commonly, the pitch is known as the slope (incline) of the roof.
Roof pitch can also be defined as the vertical rise divided by its horizontal span (or run).
In construction, the roof pitch can be known as stair while in trigonometry it is known as the tangent function.

Pitch is expressed as a degree or percentage in countries that use the metric system while in countries that use imperial measurement, pitch is expressed with rise first and run second. In US, instead of the whole run, 12 inch is used and the pitch is how much rise or fall is for 12 inch of run.

Calculate Roof Pitch from Rise and Run #

roof pitch
*All fields are required:
Pitch angle (degrees): =
Grade (slope incline) (%): =
Roof pitch (x:12): =
Rafter Length: =
* For decimal dimensions, use the dot notation! (.)
Author: | Publisher: Kai calculator | Published: | Last modified: 2020-08-4 | Link: #

More Roof Pitch Calculators

Calculate Pitch from angle degrees #


Calculate Pitch from Grade (slope incline) #

Grade %

Calculate degrees from pitch #

Pitch (x:12):
Roof pitch calculator


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Pat Foisey
when Calculating the Roof Pitch from Rise and Run. your form should give the answer for rafter lenth othherwise i like this site.
Thanks Pat, we are considering your suggestion.
Yep... Would be awesome to get rafter length based on rise and run. Also, a bird mouth cut would be great to have.
Alex (admin)
Thanks SND I will do it right now. How will a "bird mouth cut" help? I am not sure I understand what dimensions you need here?
Foarte bună aplicația! O recomand!