⚡ System Performance
Efficiency Calculator
Calculate efficiency, power loss, and performance for electrical, mechanical, and thermal systems.
System Type
Input Power/Energy
W
Power supplied to the system
Output Power/Energy
W
Useful power delivered by the system
Loss Calculation
Efficiency
85.0%
Power Loss
150 W
Efficiency = Output ÷ Input × 100 | Loss = Input − Output
Efficiency
0%
Efficiency
0%
output ÷ input × 100
Power Loss
0 W
System Type
Electrical
Input
0 W
Output
0 W
📐 Efficiency Formulas
η = (P_out ÷ P_in) × 100
Efficiency
P_loss = P_in − P_out
Power Loss
P_out = η × P_in
Output Power
P_in = P_out ÷ η
Input Power
📊 Calculation Breakdown
| Parameter | Value | Description |
|---|
How the formula works
η = (P_out ÷ P_in) × 100 | P_loss = P_in − P_out
- η (Efficiency) = Output ÷ Input × 100 (percentage)
- P_in (Input) = Power or energy supplied to the system
- P_out (Output) = Useful power or energy delivered by the system
- P_loss = P_in − P_out (power lost as heat, friction, etc.)
- Ideal efficiency = 100% (no losses), real systems always have losses