Figuring out Cubic Inch displacement

Cubic inch displacement is calculated by the formula:

pi/4 x dxx2 x stroke x cyl pi = 3.14159
pi/4 = .7853975
d = bore diamenter of a cylinder
dxx2 = d-squared
stroke = stroke of crankshaft
cyl = number of cylinders

The Cubic Inch Calculator

Enter the information into the fields and click on COMPUTE for the answer

Bore Diameter (inches)
Stroke Length (inches)
Number of cylinders