Engine Displacement Calculator

Enter bore and stroke in millimeters or inches to calculate cc, liters, and cubic inches.

Bore

Stroke

Cylinders

Dimension unit

—Displacement cc

—Liters

—Cubic inches

—Per cylinder

—Geometric swept displacement = π/4 × bore² × stroke × cylinders.

How to use this Engine Displacement Calculator

Calculate engine displacement from bore, stroke, and cylinder count. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.