Rise Over Run Roof Calculator

Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.

Rise over run roof calculator.

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. Roof pitch calculator results explained. 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. It is often compared to slope but is not exactly the same.

Angle percentage 6 10 x 100. A roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. Calculate the rafter length substituting these values into the following formula.

Enter the rise and run for the pitch length and angle of the rafter. 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. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. To find the percentage of a slope use this slope percent formula.

Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch. 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. Calculate roof pitches with this free and simple online tool. Angle the angle of a roof is the same as the roof s slope except instead of being.

The triangle diagram will be re drawn to scale with all dimensions marked. 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. Here is an online rise and run calculator which helps to calculate pitch slope and angle with the help of rise and run values. In roof pitch calculator pitch value can be obtained by dividing n by.

Measure the rise of your roof. Drag sliders to animate the results and diagram. The rise is the distance from the top of the roof to the bottom. Let s say it is equal to 1 5 m.

Measure the run length it is the horizontal distance between the roof ridge and the wall of the building. How do you find the percent of slope using rise over run. Roof slope calculator example of use. The run is the distance from the outside of the wall to the inside of the ridge.

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.