Carnot Efficiency Calculator

Maximum thermal efficiency

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Carnot Efficiency

Maximum thermal efficiency

$$\eta_{Carnot} = 1 - \dfrac{T_C}{T_H}$$

Theoretical maximum for any heat engine. Both T in Kelvin. Real cycles achieve 30–45% of this.

T_H (K)

T_C (K)

T_H must be greater than T_C and nonzero.

Carnot Efficiency η

—%

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