Engine displacement calculator
Quickly calculate your engine’s displacement using bore size, stroke length, and cylinder count. Get instant and accurate results with our easy-to-use tool.
Input values
You can now use all of Motoristo’s tools and calculators directly from our new app on the Google Play Store (iOS coming soon).
The app lets you save and load configurations, and even works offline, perfect for when you're out in the garage or on the go.
Result
Understanding the different parameters
Number of cylinders
This is quite simply the number of cylinders your engine has. What more could we say?
Bore size
The bore size is the diameter of each cylinder.
Stroke length
The stroke length is how far the piston travels inside the cylinder.
How to calculate engine displacement
The formula to calculate an engine's displacement can be seen below, this is what we use in the calculator above.
Engine displacement = π(½ × bore size)2 × stroke length × number of cylinders