This article explains the various uses and aspects of roof pitch. Includes a roof pitch chart that shows the relative steepness of common roof pitches.
The roof pitch calculator finds the length of the rafter and the roof slope (in degrees and in percent).
The roof pitch calculator calculates rise, run, slope, pitch, angle, and rafter length. Use the diagrams on this page when referring to the Input section and to interpret the calculated Results.
The Roof Pitch Calculator makes it easy to calculate your roof pitch in seconds. Simply enter the roof run and rise, and get the rafter length, roof pitch in degrees, and roof pitch as a percentage.
Architects and engineers may also express roof pitch in degrees, especially when using CAD software or 3D models. For example, a 6:12 pitch equals approximately 26.57 degrees. Knowing your roof pitch helps with planning construction, choosing materials, and estimating how water or snow will run off the roof.
Roof pitch can affect energy efficiency, roofing material options, and more. Learn more about roof pitch and how to measure it in this guide.
Our comprehensive roof pitch chart provides instant reference for all common roof slopes, angles, and ratios used in residential and commercial construction. This professional-grade reference tool shows the relationship between pitch ratios, degrees, percentages, and practical applications, making it an essential resource for contractors, architects, and building professionals.
Free roof pitch calculator. Convert rise/run to angle, slope, and rafter multiplier instantly. Includes 1/12 through 12/12 presets and complete pitch reference. Built by carpenters at Rapid Rafter.
Free roof pitch calculator to convert between degrees, ratios & percentages instantly. Calculate roof slope and pitch multiplier with installation recommendations.