Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Thermodynamics
Otto Cycle Analysis Calculator
Calculate the ideal thermal efficiency of a spark-ignition gasoline engine using the Otto cycle model. Enter compression ratio and specific heat ratio to see how engine geometry limits maximum theoretical efficiency.
Fill in the required fields to see your result.
Thermodynamics
Carnot Cycle Efficiency Calculator
Find the theoretical maximum efficiency any heat engine can achieve between a hot and cold reservoir. Use this when designing or benchmarking steam turbines, engines, or any thermodynamic power cycle.
Fill in the required fields to see your result.
Key differences
| Otto Cycle Analysis Calculator | Carnot Cycle Efficiency Calculator | |
|---|---|---|
| Category | Thermodynamics | Thermodynamics |
| Inputs required | 2 | 3 |
| Result | Otto Cycle Thermal Efficiency (%) | Carnot Efficiency (%) |
| What it does | Calculate the ideal thermal efficiency of a spark-ignition gasoline engine using the Otto cycle model. Enter compression ratio and specific heat ratio to see how engine geometry limits maximum theoretical efficiency. | Find the theoretical maximum efficiency any heat engine can achieve between a hot and cold reservoir. Use this when designing or benchmarking steam turbines, engines, or any thermodynamic power cycle. |