Engine Displacement Calculator
Fill in the values and the answer updates as you type.
How the Engine Displacement Calculator works
Displacement = π ÷ 4 × bore² × stroke × number of cylinders. With bore and stroke in millimeters, divide by 1,000 to get cubic centimeters. A four-cylinder with an 86 mm bore and 86 mm stroke displaces about 1,998 cc, or 2.0 liters.
Inputs and results
The Engine Displacement Calculator takes 3 inputs and gives 5 results.
What you enter
- Cylinder bore (mm) — starts at 86.
- Stroke (mm) — starts at 86.
- Number of cylinders — starts at 4.
What you get
- Total displacement (cc)
- Displacement (liters)
- Displacement (cubic inches)
- Per cylinder (cc)
- Engine layout
Engine Displacement Calculator FAQ
How do I use the Engine Displacement Calculator?
Enter cylinder bore, stroke and number of cylinders in the fields, then read total displacement (cc), displacement (liters), displacement (cubic inches) and per cylinder (cc) in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Engine Displacement Calculator calculate?
Engine size in cc, liters, and cubic inches from bore and stroke. It returns total displacement (cc), displacement (liters), displacement (cubic inches) and per cylinder (cc) from the 3 values you provide.
What values does the Engine Displacement Calculator start with?
It opens with cylinder bore 86 mm, stroke 86 mm and number of cylinders 4 so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Engine Displacement Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Engine Displacement Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.