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Robot Mower Slope Calculator
Convert measured rise and run into slope percentage and degrees, then compare that value with a mower’s published limit.
Convert rise and run into a mower-ready number
Slope percentage is vertical rise divided by horizontal run, multiplied by 100. The angle is the arctangent of the same ratio. Measure both values in the same unit and use horizontal run rather than distance measured along the grass.
Check work-area and boundary limits separately
Robot mower specifications may allow a steeper slope inside the mowing area than near a physical or virtual boundary. Turns, wet grass, obstacles and abrupt transitions can also reduce usable performance. The calculator subtracts the entered planning margin before reporting headroom.
Continue with the robot mower ownership cost calculator and robot mower buying guide.
Frequently asked questions
Is 25 percent slope equal to 25 degrees?
No. A 25 percent grade is approximately 14 degrees.
Where should I measure?
Measure the steepest sustained section and the boundary transition.
Can AWD exceed the manual’s rating?
No. Treat the current model manual as the governing limit.
Technical reference: Husqvarna’s official slope guidance uses rise divided by run and lists separate boundary limits.