basic

Lever Mechanical Advantage Calculator

MA = effort arm / load arm; effort needed for a load.

Compute the mechanical advantage of a class-1 lever from the effort and load arm lengths, plus the effort force required to balance a given load and the load lifted by a given effort.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

m
m
N

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

MA = effort_arm / load_arm; effort = load / MA.

In depth

Compute the mechanical advantage of a class-1 lever from the effort and load arm lengths, plus the effort force required to balance a given load and the load lifted by a given effort.