Compressor Map Operating Point Calculator
Liguori Drag Racing • Forced Induction
All calculators / Forced Induction
Compressor Map Operating Point
Calculate pressure ratio and corrected airflow for a compressor map.
Starting values are examples. Enter your measurements; results update as you type.
Method & assumptions
Air consumption uses four-stroke displacement, RPM, VE and manifold ideal-gas density. PR = (ambient + boost + outlet loss) / (ambient − inlet loss). Corrected flow = actual flow × √(inlet K / reference K) × reference pressure / inlet pressure. Match the selected compressor map’s reference conditions; different manufacturers use different standards. This point alone does not establish surge, choke or speed limits.