Engineering & Construction
Slope & Gradient Calculator
Convert a rise and a run into a gradient, a percentage and an angle.
Free forever.
Gradient = rise ÷ run. Percentage is that ratio × 100. Degrees are atan of the ratio.
Result
Press Calculate.
Result
Press Calculate.
How to use the Slope & Gradient Calculator
- Enter the rise and the run in the same unit.
- Read 1 in n, the percentage and the degrees.
Questions
What is a 10% slope?
One unit of rise for ten units of run, about 5.71°.
Is this the same as roof pitch?
The geometry is the same. The roof pitch page also shows the figure in 12.
This runs entirely in your browser. Nothing you type is sent to a server.

