Roof Pitch Conversion Table

For roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1.

Roof pitch conversion table.

The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. Since pitch is the rise over a 12 inch run divide the run by 12 to get the multiplier in this case 120 12 10. Roof slope expressed as rise. The pitch of this roof is 4 8 12.

The calculator above can handle much of this math. Pitch tan angle use this when you express the angle of the roof pitch in degrees what is the standard pitch of a roof. A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof. Now divide the rise by the multiplier to get the pitch eg.

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. 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. 48 10 4 8. Roof pitch and corresponding angles.

Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. What is a roof pitch chart. Usually they come in the form of a roof pitch diagram chart but other times it will be presented to you in a conversion format. To see what the degree equivalents are for standard rise in run roof pitches see our page quick reference.