Efficiency Calculator
Calculate system efficiency from input and output values.
How to Use This Calculator
1
Enter input
Total energy, work, or power supplied.
2
Enter output
Useful energy, work, or power obtained.
3
Get efficiency
Result is shown in percent.
Formula
Efficiency (%) = (Output / Input) × 100
Example: Output=80, Input=100 → 80%
About Efficiency
Efficiency measures how effectively input is converted to useful output.
- Machines and engines
- Electrical devices and power supplies
Frequently Asked Questions
Can efficiency exceed 100%?
No for energy conversion; apparent values >100% indicate measurement or definition issues.
Units?
The ratio is unitless; we display percentage.