Slope, Grade & Fall Percentage Calculator

Calculate and convert slope, grade percentage, elevation fall, and pitch for civil earthwork, landscape drainage, ADA ramp compliance, plumbing pipes, driveways, and road design. Enter any two parameters—such as rise and run, horizontal distance and grade percentage, or length and pitch—to instantly determine the slope percentage (%), pitch per foot (e.g. 1/4″ per foot or 1:40), slope angle in degrees, vertical drop/elevation change, and true diagonal surface distance.