Free Carnot Efficiency Calculator
Calculate the maximum possible efficiency of a heat engine using Carnot efficiency: eta = 1 - Tc/Th.
K
K
Carnot Efficiency
0.5000
Efficiency (%)50.00 %
Carnot Efficiency vs Hot Reservoir Temperature
Carnot Efficiency
The Carnot efficiency is the theoretical maximum efficiency any heat engine can achieve operating between two temperatures.
Formula
eta = 1 - T_cold / T_hot
Temperatures must be in Kelvin. No real engine can exceed this efficiency due to the second law of thermodynamics.
Example Calculation
A heat engine operating between 600 K and 300 K.
- 01eta = 1 - Tc/Th
- 02eta = 1 - 300/600
- 03eta = 1 - 0.5
- 04eta = 0.5 = 50%
Frequently Asked Questions
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