When to use it
Compare factory engine specifications, plan a rebuild, check an overbore or stroker combination, or verify a listed engine size before a vehicle purchase.
Free engine size calculator
Free Engine Displacement Calculator
An engine displacement calculator finds total cylinder volume from bore, stroke, and cylinder count. Calculate cc, liters, and cubic inches or reverse-solve a missing bore or stroke.
Formula
pi / 4 x bore squared x stroke x cylinders
Switch between millimeters and inches without changing the engine represented by your measurements.
Enter engine measurements
Calculate engine size or solve the bore or stroke needed for a target displacement.
Calculated displacement
1,998.23 cc
4-cylinder engine: 86 mm bore x 86 mm stroke = 1998.23 cc (1.998 L / 121.94 cu in).
- Cubic centimeters
- 1,998.23 cc
- Liters
- 1.998 L
- Cubic inches
- 121.94 cu in
- Per cylinder
- 499.56 cc
Bore
86 mm / 3.386 in
Stroke
86 mm / 3.386 in
What it includes
Results include total cc, liters, cubic inches, volume per cylinder, converted bore and stroke, and reverse calculations for a missing bore or stroke.
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Start a carpoolEngine Displacement Calculator FAQ
What is an engine displacement calculator?
An engine displacement calculator finds the total swept volume of every cylinder from bore, stroke, and cylinder count. Results are commonly shown in cc, liters, or cubic inches.
What is the engine displacement formula?
Total displacement equals pi divided by four, multiplied by bore squared, stroke, and the number of cylinders. Use one measurement unit consistently before converting the final volume.
How do I convert cubic inches to cc?
Multiply cubic inches by 16.387064 to convert to cubic centimeters. Divide cc by the same value to convert back to cubic inches.
Can this calculator find a missing bore or stroke?
Yes. Choose missing bore or missing stroke, then enter the target displacement, cylinder count, and the known dimension to reverse the displacement formula.