Ramp Slope Calculator
Ramp Slope Calculator reports rise-to-run ratio, grade, and angle.
Understand the ramp slope calculator result
Ramp Slope Calculator gives a focused calculation for checking preliminary ramp geometry and understanding the common one-to-twelve ratio. It asks for vertical rise, horizontal run and reports grade percent and angle degrees and run per unit rise. Grade is rise divided by horizontal run, while angle is the arctangent of that ratio. One foot of rise over twelve feet of run is 8.333 percent grade and about 4.764 degrees. By exposing grade percent and angle degrees and run per unit rise, Ramp Slope Calculator makes this specific arithmetic inspectable instead of presenting an unexplained number.
With the page defaults of Vertical rise 1 feet, Horizontal run 12 feet, the verified output is Grade percent 8.333333, Angle degrees 4.763642, Run per unit rise 12. Run is horizontal projection and does not include landing length or sloped surface length. In Ramp Slope Calculator, each labeled default remains visible while you edit, so you can change one assumption at a time and trace how grade percent responds.
Method, limits, and private processing
Accessibility and building requirements include landings, width, handrails, surfaces, and local exceptions beyond slope. Ramp Slope Calculator evaluates the entered values entirely in your browser, without sending the inputs to a server. When using its grade percent and angle degrees and run per unit rise, retain the stated method and input units because this result is bounded by the assumptions of grade is rise divided by horizontal run, while angle is the arctangent of that ratio.
Frequently Asked Questions
How does Ramp Slope Calculator work?
Grade is rise divided by horizontal run, while angle is the arctangent of that ratio.
How should I read the result?
One foot of rise over twelve feet of run is 8.333 percent grade and about 4.764 degrees.
What limitation should I keep in mind?
Accessibility and building requirements include landings, width, handrails, surfaces, and local exceptions beyond slope. Run is horizontal projection and does not include landing length or sloped surface length.
Browse the full set of free, private, in-browser tools.