About this tool
Gradient percent, ratio, angle, slope length and H:V batter from a rise and a run.
Percent = rise/run·100; ratio = 1 : run/rise; angle = atan(rise/run); length = √(rise² + run²).
Formula: i = rise/run·100 θ = atan(rise/run)
Example: Rise (m) = 1.5, Run (m) = 20 → Gradient (%) = 7.5, Angle (°) = 4.29.
Pure geometry; no maximum gradient, drainage or earthwork rule is applied.
Quick steps
- Enter your values — every field shows its unit.
- Press Calculate (or Try an example to see how it works).
- Read the results and copy them if you need them elsewhere.
The calculation runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the Slope & Gradient Calculator work?
Percent = rise/run·100; ratio = 1 : run/rise; angle = atan(rise/run); length = √(rise² + run²).
What should I keep in mind?
Pure geometry; no maximum gradient, drainage or earthwork rule is applied.
Is my data sent anywhere?
No. The numbers stay on your device; the page only shows the result.