Mechanical Advantage Calculator
Enter effort and load using the same force unit. Velocity ratio is optional; without a positive value, efficiency is undefined.
Efficiency above 100% flags inconsistent measurements or idealized assumptions; it does not confirm real performance. This ratio is not lifting or equipment guidance.
The report freezes submitted raw inputs and units.
Formula: MA = L / E; η = 100 × MA / VR
Result
A QUICK WALKTHROUGH
How to use this tool
- Enter effort and load using the same force unit. Velocity ratio is optional; without a positive value, efficiency is undefined.
- Calculate and review the model limits.
Formula and units
MA = L / E; η = 100 × MA / VR; Force unit (used for both forces)
Model scope
Efficiency above 100% flags inconsistent measurements or idealized assumptions; it does not confirm real performance. This ratio is not lifting or equipment guidance.
GOOD TO KNOW
Common questions
What if velocity ratio is unavailable?
Leave it blank or enter zero. Mechanical advantage is calculated, but efficiency is undefined.