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Engine Displacement Calculator

Engine capacity from bore, stroke and cylinder count, in cc, litres and cubic inches.

Enter values

Results update as you type.

Result

Displacement

1,998.2 cc

In litres
1.998
In cubic inches
121.94
Per cylinder
499.56 cc
Bore / stroke ratio
1
Design
Square

About the Engine Displacement Calculator

Engine capacity from bore, stroke and cylinder count, in cc, litres and cubic inches.

Also known as: engine size calculator, cc calculator, bore and stroke, cubic inch displacement, engine capacity.

How to use this calculator

  1. Enter bore, stroke, number of cylinders.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

V = π/4 × bore² × stroke × cylinders

Worked example

Using the values pre-filled in the calculator above:

  • Bore = 86 mm
  • Stroke = 86 mm
  • Number of cylinders = 4

the calculator returns:

  • Displacement: 1,998.2 cc
  • In litres: 1.998
  • In cubic inches: 121.94
  • Per cylinder: 499.56 cc