Enter the sling height and sling length into the calculator to determine the sling angle in degrees.

Sling Angle Formula

The following formula is used to calculate the angle of a sling.

SA = arccos(H/L)

  • Where SA is the sling angle (degrees)
  • H is the height of the sling
  • L is the length of the sling

To calculate the sling angle, take the inverse cosine of the height divided by the length of the sling.

What is a sling angle?


A sling angle is a measure of the angle between the centerline of a sling and the length of either side of the sling.

How to calculate sling angle?

Example Problem:

The following example problem outlines how to calculate the angle of a sling.

First, determine the height of the sling. This is the distance from the surface of the hanging object to the center of the sling. In this case, the height is 5 inches.

Next, determine the length of the sling. In this example, the length of the sides of the sling is 8 inches.

Finally, calculate the sling angle using the formula above:

SA = arccos(H/L)

SA = arccos(H/L)

SA = 51.283