Enter the effort force (N) and the load force (N) into the calculator to determine the Winch Efficiency. 

Winch Efficiency Formula

The following formula is used to calculate the Winch Efficiency. 

Ew = EF / LF * 100

  • Where Ew is the Winch Efficiency (%)
  • EF is the effort force (N) 
  • LF is the load force (N) 

How to Calculate Winch Efficiency?

The following two example problems outline how to calculate the Winch Efficiency.

Example Problem #1:

  1. First, determine the effort force (N). In this example, the effort force (N) is given as 528.
  2. Next, determine the load force (N). For this problem, the load force (N) is given as 625.
  3. Finally, calculate the Winch Efficiency using the equation above: 

Ew = EF / LF * 100

Inserting the values from above and solving the equation: 

Ew = 528 / 625 * 100 = 84.48 (%)


Example Problem #2: 

Using the same process as above, first define the variables required by the formula. In this case, these values are:

effort force (N) = 70

load force (N) = 80

Entering these values yields:

Ew = 70 / 80 * 100 = 87.5 (%)