Calculate the mechanical advantage and force required to lift a load using a compound pulley system. This calculator determines the effort force needed based on the number of supporting rope segments.
Enter your values below
Weight of the load to be lifted
Number of rope segments supporting the load
Account for friction losses (default: 100%)
How this calculator works
Effort force equals the load weight divided by the number of supporting rope segments in the pulley system.
Common questions about this calculator
These calculators are for educational and informational purposes only. While we strive for accuracy, results should be verified for critical applications. Always consult authoritative sources for engineering or scientific work.
