Engine Displacement Calculator
Engine capacity in cubic centimetres and litres from bore, stroke and cylinder count.
Results
Volume
1598.4
cm³
Volume
1.598
L
Volume
399.59
cm³
What this tool does
Displacement is the swept volume of one cylinder multiplied by the number of cylinders, which is why a 1998 cm³ engine gets advertised as a two litre. The bore is the cylinder diameter and the stroke is how far the piston travels.
Formula
V = π × d² ÷ 4 × stroke × cylinders
Variables
| Symbol | Meaning | Unit |
|---|---|---|
b | Diameter | mm |
s | Length | mm |
n | Quantity | — |
V | Volume | cm³ |
VL | Volume | L |
VC | Volume | cm³ |
Worked example
- Diameter79.5 mm
- Length80.5 mm
- Quantity4
- Volume1598.4 cm³
- Volume1.598 L
- Volume399.59 cm³
Limitations
- The result is an estimate based only on the values you type. Real situations often include factors this calculator does not know about.
- Mixing units is the most common source of error. Convert every input to the units shown next to each field before calculating.