Roof Slope Conversion Tables

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.

Roof slope conversion tables.

Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree. Then you ll be able to measure slope from an unfinished attic space under the roof. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials. You can find the roof pitch in the form of x 12 like 4 12 or 9 12.

18 4o inches per foot. 3 1 or 3 to 1 percent slope. Image 1 12 to 12 12 roof pitch 7 12 pitch. Roof pitch is the slope created by the rafter.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length. Last updated july 10 2020. Horizontal to vertical slope ratio to 1 percent slope degrees slope slope ratio.

Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. Slope as grade for an elevation of 1 m over a distance of 2 m can be calculated as. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. Run horizontal distance from rise2 50 0 208 11 77.

Rise vertical distance from11 00 0 083 4 76. S grade 1 m 2 m 50 slope and roof pitch. Roof pitch on the form x 12 can be expressed in grades as. The charts are there to provide people with an idea of what the actual slope will.

The combination of two numbers are used to display or show the roof pitch. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. 4 3 1 slope. Roof pitch degree table.

Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. To obtain an accurate roof pitch measurement properly measure the rise and run. Line to roof surface. Roof slope expressed as rise.

Example slope as grade. Most roof s have a pitch in the 4 12 to 9 12 range. We included a roof pitch chart below the 7 12 example image and the calculator below that. Roof pitch conversion charts are very useful for one thing they give you all the information that you need to provide to the professionals.

If you can give them the exact chart and measurement that you like the look of they can work to those specifications. Inches rise112degrees per 12 inches of run.