Slope Percentage Calculator

One slope carries four names, and a drawing, a spec and a building code each use a different one. Enter a rise and a run, a percent grade, a ratio such as 1 in 12, or an angle in degrees, and this returns the other three plus the fall per foot, per ten feet and per metre. Every answer is checked against the 1:12 ramp maximum, the 1:20 route limit and the 1:48 cross slope. Those are the common published limits and no substitute for the code your work is inspected under.