Roof Pitch Conversion Table

To see what the degree equivalents are for standard rise in run roof pitches see our page quick reference.

Roof pitch conversion table.

Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio. 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. 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. 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.

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. There are many tools out there. The pitch of this roof is 4 8 12. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.

48 10 4 8. The calculator above can handle much of this math. Roof slope expressed as rise. Now divide the rise by the multiplier to get the pitch eg.

Pitch tan angle use this when you express the angle of the roof pitch in degrees what is the standard pitch of a roof. What is a roof pitch chart. In essence a roof pitch chart is provided as a rough guide usually by a roofing company to help you see what the average roof pitches tend to be. 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.