Piston Engines - Displacement

Calculate piston engine displacement using bore, stroke, and number of cylinders

Piston Engine Displacement Calculator

Calculate the displacement of a piston engine using the formula:

V = (π / 4) × s × b² × noc

Where:

  • V = engine displacement (in³, cm³)
  • s = stroke (in, cm)
  • b = bore diameter (in, cm)
  • noc = number of cylinders
Calculator

Inputs

Results

Displacement-- in³

Example - V8 Engine

For a V8 engine with:

  • Stroke: 3.31 in
  • Bore: 3.625 in
  • Cylinders: 8

Result: ~273 cu in