Roof Pitch Calculator
Calculate the angle and pitch of a roof from the rise and run.
Angle (degrees): -
Pitch (x/12): -
The amount of rise for every 12 inches of run.
Use this roof pitch calculator, roof slope calculator, roof angle calculator, calculate roof pitch, determine roof pitch calculator for quick, clear estimates. Try a tiny example to see the impact of each input.
Frequently Asked Questions
Q: What is roof pitch?
Roof pitch, also known as roof slope or roof angle, is a measure of the steepness of a roof.
How is roof pitch expressed?
Roof pitch is typically expressed as a ratio of the vertical rise to the horizontal run, often in inches per 12 inches (e.g., 6/12), or as an angle in degrees.
What is a good roof pitch?
The “good” roof pitch depends on factors like climate, roofing material, and aesthetic preference. Pitches between 4/12 and 9/12 are common for shedding water effectively and allowing for attic space.
How do you measure roof pitch?
You can measure roof pitch using a level and a tape measure. Hold the level horizontally against a rafter and measure 12 inches along the level. Then, measure the vertical distance from the 12-inch mark on the level down to the rafter to get the “rise” over a 12-inch “run.”