Enter the height (m) and the horizontal distance (m) into the Calculator. The calculator will evaluate the Hill Angle. 

Hill Angle Formula

HA = atan(H/HD) *57.2958


  • HA is the Hill Angle (degrees)
  • H is the height (m)
  • HD is the horizontal distance (m)

To calculate Hill Angle, take the arc tangent of the hill height over the hill horizontal distance.

How to Calculate Hill Angle?

The following steps outline how to calculate the Hill Angle.

  1. First, determine the height (m). 
  2. Next, determine the horizontal distance (m). 
  3. Next, gather the formula from above = HA = atan(H/HD).
  4. Finally, calculate the Hill Angle.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

height (m) = 4.5

horizontal distance (m) = 7.45