Mechanical Advantage Calculator
Mechanical advantage compares the force delivered by a simple machine with the force applied to it.
How to use this calculator
- Enter input and output force magnitudes in newtons.
- Check the labels and units before using a result outside this page.
- Change one input at a time if you want to compare scenarios.
Formula and method
Mechanical advantage = output force ÷ input force
- Mechanical advantage = output force ÷ input force
- The ratio does not include friction or tell you the machine’s efficiency, travel distance or safe working load.
Worked examples
Worked example
An applied force of 50 N produces 200 N output.
Mechanical advantage = 200/50 = 4, or a 4:1 force ratio.
Mechanical advantage = 200/50 = 4, or a 4:1 force ratio.
Understanding the result
Mechanical advantage compares the force delivered by a simple machine with the force applied to it.
The ratio does not include friction or tell you the machine’s efficiency, travel distance or safe working load.
Important notes
The ratio does not include friction or tell you the machine’s efficiency, travel distance or safe working load.
Displayed outputs are rounded for readability; preserve full precision when continuing a calculation.
Frequently asked questions
What does this mechanical advantage calculator show?
Mechanical advantage compares the force delivered by a simple machine with the force applied to it.
Which inputs should I check first?
Enter input and output force magnitudes in newtons.
Can the result be used as a final professional specification?
The ratio does not include friction or tell you the machine’s efficiency, travel distance or safe working load.
Related calculators
- Force Calculator — Calculate force from mass and acceleration.
- Gear Ratio Calculator — Calculate the driven-to-driver gear ratio and ideal output speed from tooth counts and input RPM.
- Mechanical Work Calculator — Calculate mechanical work from force and displacement.
- Spring Force Calculator — Calculate ideal spring force magnitude from a spring constant and displacement using Hooke’s law.
- Mechanical Power Calculator — Calculate mechanical power from work and time.
- Ratio Calculator — Simplify ratios, scale ratios, and solve ratio proportions.
Related explanations
Learn the method behind the number or compare the terminology before using the calculator.
- How to Calculate Percent Error — Learn the percent error formula and how to compare an experimental value with a reference or accepted value.
- CAGR Explained: Compound Annual Growth Rate — Learn the CAGR formula and how to use it to compare growth over multiple years.
- Salary — Understand salary, hourly pay, annual gross pay estimates, and the assumptions behind salary conversions.
This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.