Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Automotive
Engine Displacement Calculator
Calculate an engine's total displacement in cubic centimeters (cc) from the bore diameter, stroke length, and number of cylinders. Use it to size an engine's output potential, classify it for motorsport regulations, or compare engines across manufacturers using a standard volume metric.
Fill in the required fields to see your result.
Automotive
Engine CFM Calculator
Calculate the carburetor or throttle body airflow requirement (in CFM) for an engine based on displacement and maximum RPM. Used by engine builders and performance tuners to select correctly sized carburetors.
Fill in the required fields to see your result.
Key differences
| Engine Displacement Calculator | Engine CFM Calculator | |
|---|---|---|
| Category | Automotive | Automotive |
| Inputs required | 3 | 2 |
| Result | Engine Displacement (cc) | Required CFM (CFM) |
| What it does | Calculate an engine's total displacement in cubic centimeters (cc) from the bore diameter, stroke length, and number of cylinders. Use it to size an engine's output potential, classify it for motorsport regulations, or compare engines across manufacturers using a standard volume metric. | Calculate the carburetor or throttle body airflow requirement (in CFM) for an engine based on displacement and maximum RPM. Used by engine builders and performance tuners to select correctly sized carburetors. |