How Do I Get The Pitch Of A Roof

This is our pitch calculator which will convert pitch to angle or angle to pitch for half degree roof slope calculations.

How do i get the pitch of a roof.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. If you do need to calculate the pitch an estimate or shortcut is usually more practical than measuring the roof s overall dimensions. Here are a couple examples. Then enter the value of the run and choose the unit of measurement from the drop down menu.

Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Another method to find the roof pitch is to go into the attic and measure the rise for a 12 run of the roof rafters which allows finding the pitch without going on the roof. This gives you the pitch of the roof. Enter any pitch or fraction of pitch to find angle.

To convert from degrees to the american ratio. First enter the value of the rise and choose the unit of measurement from the drop down menu. First measure 12 inches from one end of the level and make a mark. Find the tangent of the angle tan angle.

Divide the slope by two to get the pitch. A 30 roof pitch is roughly the same as a 7 12 roof pitch. Enter any angle or fraction of angle to find pitch. Finally enter the value of the rafter length and.

For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally.