If you wish to calculate what compression ratio your engine is/will be then fill in the info below and hit the magic calculate button. You can change the rounding factor by putting how many numbers after the decimal place you want displayed in the Accuracy field.

Compression Ratio from Swept and Clearance Volumes

     
Swept Capacity (Total Engine) cc
Head Volume (Individual Pot) cc
Other Volume (Gasket, etc) cc
Cylinders #
     
Accurary Dec Pl
   

Clearance Volume from Compression Ratio and Swept Volume

     
Swept Capacity (Total Engine) cc
Compression Ratio :1
Cylinders #
     
Accurary DecNumber
   

Swept Volume from Compression Volume and Compression Ratio

     
Compression Volume (Single cylinder) cc
Compression Ratio :1
Cylinders #
     
Accurary DecNumber