Compression Ratio Calculator
Calculate engine compression ratio using bore, stroke, chamber volume, and related measurements.
Engine Specs
0:1Compression Ratio
0Swept Volume (cc)
0Clearance Volume (cc)
What Is Compression Ratio?
Compression ratio is the ratio of the total cylinder volume when the piston is at bottom dead center to the volume when the piston is at top dead center.
Higher compression ratios can improve power and efficiency but may require higher-octane fuel.