Roof Rise And Run Calculator

Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof.

Roof rise and run calculator.

A roof pitch that is based on a fixed rise and run and does not end up with a whole number is known as a bastard pitch. Express roof pitch as the ratio of the amount of the vertical rise of a roof or rise over the corresponding horizontal distance or run you write the pitch assuming a run of 12 inches thus the ratio would describe how much a roof rises for each foot of the run. The triangle diagram will be re drawn to scale with all dimensions marked. A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch.

The run is the distance from the outside of the wall to the inside of the ridge. Roof pitch calculator calculate roof pitches with this free and simple online tool. Click the button to calculate the stock size needed for this job. Here the number is 941 86 inches.

Pitch tan angle where angle is the roof pitch expressed in degrees. As aforementioned there is no standard pitch of a roof. Drag sliders to animate the results and diagram. If you want to find the roof pitch in the form of x 12 simply calculate the pitch and substitute 12 for the run length.

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. Here the number is 1166 66 inches. Use the diagrams on this page as a reference when inputting rise and run and while interpreting the calculated results. Rise run pitch where pitch is expressed in percent.

Enter run and known pitch angle or rise to calculate other dimensions enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch. This calculator is to be used as an estimating tool only. Input the rafter span on the flat eave overhang and pitch of the roof. Here is an online rise and run calculator which helps to calculate pitch slope and angle with the help of rise and run values.

The roof pitch calculator calculates slope pitch angle and rafter lengths based on input of rise m and run r. Rafter run outer wall this should be measured starting from the center of the roof span and then extending to the very edge of the exterior wall. Enter the rise and run for the pitch length and angle of the rafter. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.