Fulcrum Calculator — Free Online Tool
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Fulcrum / Lever Calculator

Calculate mechanical advantage and required force using the principle of moments

Instructions: Enter the input arm length ($d_{in}$), output arm length ($d_{out}$), and applied input force ($F_{in}$) to compute mechanical advantage and output force.
Lever Parameters

Calculation Results

⚠️ For mechanics and physics education reference only. Arm lengths must be strictly positive.

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