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Automotive / Engine
Bore / Stroke Ratio Calculator
Classify engine geometry and quantify the difference between cylinder bore and crankshaft stroke.
Engine geometry
Bore / stroke result
Square geometry1 : 1
Bore equals stroke
- Bore / stroke ratio
- 1 : 1
- Classification
- Square
- Signed difference
- 0 mm
- Bore difference vs stroke
- 0%
- Absolute difference
- 0%
Oversquare means bore exceeds stroke; undersquare means stroke exceeds bore. The ratio alone does not determine engine performance or safe operating speed.