Pulley Calculator

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Calculates the mechanical advantage, output force, or output distance of a pulley system based on input parameters.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Input Force (N), Number of Supporting Ropes, and Input Distance (m) in the units shown.

Step 2

Read Mechanical Advantage, Output Distance (m), and Output Force (N) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Input Force (N): 100 N; Number of Supporting Ropes: 1; Input Distance (m): 1 m

Mechanical Advantage: 1; Output Distance (m): 1 m; Output Force (N): 100 N

Input Force (N): 100 N; Number of Supporting Ropes: 2; Input Distance (m): 1 m

Mechanical Advantage: 2; Output Distance (m): 0.5 m; Output Force (N): 200 N

Input Force (N): 100 N; Number of Supporting Ropes: 3; Input Distance (m): 1 m

Mechanical Advantage: 3; Output Distance (m): 0.3333333333 m; Output Force (N): 300 N

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