Calculator Roof Pitch Formula

Use the following formula which also describes a right triangle.

Calculator roof pitch formula.

Roof pitch calculator results explained. Set the level on the edge of the speed square as shown below then place the heel of the speed square on a rafter or gable edge of the roof. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. Roof pitch angle calculator briefly about the calculation.

The pitch of this roof is 4 8 12. You can also calculate roof pitch even without using a roof slope calculator. For example if your tape measure found a 6 inch vertical distance to the 12 inch mark on your level the slope is 6 12 or 6 in 12. Measure with a speed square.

The roof pitch angle calculator is used to calculate both the roof slope angle and the missing roof data the projection height length and slope angle of the roof. Write the roof slope as the ratio of rise over run or vertical distance over horizontal distance. Visually where and what values can be seen in the drawing of the calculator which is under the form of calculation. A speed square and level can be used to easily find the pitch of a roof.

There is no standard universal roof pitch roof pitch varies depending on culture climate style and available materials in the usa the range of standard pitches is anywhere between 4 12 and 9 12 in the uk the typical house has a pitch between 40 50 although 45 should be avoided. Here are the equations you may use to solve for the length of the slope and the rafter. Contemporary houses often have flat roofs which shouldn. Rafter rise run this formula is from the pythagorean theorem.

The calculator above can handle much of this math.