Calculate total engine displacement from cylinder bore, piston stroke, and cylinder count. Get instant results in cubic centimeters, liters, cubic inches, and displacement per cylinder.
Engine displacement represents the combined swept volume of all pistons inside an internal combustion engine. It is commonly expressed in cubic centimeters, liters, or cubic inches.
Displacement does not measure the physical external size of an engine. It measures the volume displaced by the pistons as they move between the top and bottom of their cylinders.
Bore is the internal cylinder diameter. A wider bore increases the area above the piston and raises displacement.
Stroke is the distance the piston travels. A longer stroke increases the swept volume of each cylinder.
Total engine displacement is the volume of one cylinder multiplied by the total number of cylinders.
An oversquare engine has a bore larger than its stroke and may be designed for higher engine speeds.
A square engine has approximately equal bore and stroke measurements, producing a ratio close to 1.00.
An undersquare engine has a longer stroke than bore and is often associated with stronger low-speed torque.
First, calculate the swept volume of one cylinder using bore and stroke. Multiply this volume by the total number of cylinders to calculate complete engine displacement.
Cubic centimeters and liters are two ways to express engine volume. One liter equals 1,000 cubic centimeters. Therefore, a 1,600 cc engine is a 1.6-liter engine.
Cubic inch displacement is an imperial measurement of engine capacity. One cubic inch is approximately equal to 16.387 cubic centimeters.
Not always. Larger displacement may allow an engine to process more air and fuel, but power also depends on turbocharging, compression ratio, airflow, fuel system, engine speed, and tuning.
Yes. You can enter bore in one supported unit and stroke in another. The calculator converts both measurements to millimeters before calculating the final displacement.
The bore-to-stroke ratio is calculated by dividing bore diameter by stroke length. A ratio above 1.00 is oversquare, approximately 1.00 is square, and below 1.00 is undersquare.