cubic inch calculator
cid calculator

Our cubic inch calculator will work out the total cubic inches of displacement (cid) for an engine given its bore, stroke and number of cylinders. The cubic inches of an engine is the measure of the swept volume of all of the pistons in the bores, not including the combustion chamber itself.

The formula for this cubic inch calculator is

cid = (((Bore/2)^2) x Stroke x Pi) x Cyl

you can also calculate with the metric version


borethe diameter of the bore of the cylinders
strokethe stroke length of the piston
cylindersthe total number of cylinders
cubic inchthe total cubic inches of displacement of the engine (cid)
literscubic inch to liter, ci to cc
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