Mechanical Advantage Calculator (Lever)

Enter the length of the effort arm and the length of the load arm of a lever into the calculator below to determine the mechanical advantage.

Mechanical Advantage Formula

The following formula is used to calculator the mechanical advantage of a lever.

MA = ea / la

  • Where MA is the mechanical advantage
  • ea is the length of the effort arm
  • and la is the length of the load arm

Mechanical advantage is a term used to describe the ratio of an output force to the input force. In other words, the amount of output with a given effort. Using physics and “leverages” certain mechanical features can be constructed to output a larger force that was input.

In the case of a lever, the mechanical advantage is directly related to the length of each arm. Each arm has an equal effect on the MA.

Mechanical Advantage Calculator (Lever)
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