Engineering & Construction
Ramp Slope Calculator
Calculate a ramp slope from the rise and the horizontal run.
Free forever.
Slope = rise ÷ horizontal run. A 1 in 12 ramp is 8.33%. This does not decide whether the ramp meets an access rule.
Result
Press Calculate.
Result
Press Calculate.
How to use the Ramp Slope Calculator
- Enter the vertical rise.
- Enter the horizontal run.
- Read the percent, the angle, the gradient and the slope length.
Questions
What is 1 in 12?
Twelve units of horizontal run for one unit of rise, which is 8.33%.
Is the run the sloping length?
No. The run is horizontal. The slope length is the diagonal, and the page shows that too.
This runs entirely in your browser. Nothing you type is sent to a server.

