Roof Pitch Estimator

It is often compared to slope but is not exactly the same.

Roof pitch estimator.

The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12. This online truss calculator will determine the all in cost of your truss based on key inputs related to the pitch width and overhang of your roof. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

For example a 4 12 pitch roof that is 100 square feet. The roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r. Roof pitch roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. There is no standard universal roof pitch.

After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. Roof pitch varies depending on culture climate style and available materials. The pitch of the roof is the rise over a 12 inch run. Use our roof pitch calculator to find the pitch of your roof.

In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. This gives us a 3d roof area of 1 625 sq ft. Enter any pitch or fraction of pitch to find angle. Now assuming an average pitch of 9 12 we multiply the 2d area of 1 300 by 1 25.

Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. How roof pitch is calculated to accurately calculate the area of your roof you must first determine its slope or pitch. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Enter any angle or fraction of angle to find pitch. This is our pitch calculator which will convert pitch to angle or angle to pitch for half degree roof slope calculations. Assuming this is a hip roof we multiply this by 1 1 which gives us roughly 18 squares or 1 800 square feet of the roof surface.

In the uk the typical house has a pitch between 40 50 although 45 should be avoided.