Understanding Sloping Roof CalculationsA sloping roof, also known as a pitched roof, is one of the most common roof designs used in residential and commercial construction. Understanding how to calculate roof pitch, rafter length, and total roof area is essential for architects, builders, and homeowners planning roofing projects.The roof pitch refers to the steepness or angle of a roof, typically expressed as a ratio (such as 6:12) or in degrees. This measurement is crucial for determining the type of roofing materials suitable for your project, drainage efficiency, and overall aesthetic appeal. Our sloping roof calculator helps you quickly determine these important measurements.Rafter length calculation is fundamental for ordering the correct amount of lumber. The rafter runs from the peak of the roof to the eaves, forming the structural framework that supports the roof covering. By knowing the roof span (width) and rise (height), you can accurately calculate the rafter length using the Pythagorean theorem.When planning your roofing project, accurate roof area calculations ensure you purchase the right amount of shingles, tiles, or other roofing materials. Remember that a sloped roof has more surface area than its footprint, which is why using a dedicated calculator like ours provides more accurate estimates than simply measuring the floor space below.
Sloping RooSloping Roof Calculatorf Calculator
Sloping Roof Calculator
Calculate pitch angle, rafter length, and roof area
Calculation Results
Pitch Angle–
Pitch Ratio–
Rafter Length–
Total Roof Area (Both Sides)–