Compression Calculator

Instructions: Enter a value in the un-shaded boxes below as they pertain to your engine.
Note: For pistons BELOW the block @ TDC - value in box must be a POSITIVE number (.000)
Note: For pistons ABOVE the block @ TDC - value in box must be a NEGATIVE number (-.000)
Note: For a DISH piston - value in box must be a POSITIVE number (0.0)
Note: For a DOME piston - value in box must be a NEGATIVE number (-0.0)
Note: Manipulate the DOME/DISH & PISTON to DECK volumes to get the ratio you want.
Enter the number of cylinders of your engine
Bore
Stroke
Rod Length
Gasket Bore
Comp. Gasket
Block Deck Height
Top Ring Down
Chamber Volume
Dome/Dish Volume
Piston to Deck
Click "Calculate" for dimension results.
Total Volume
Cylinder Volume
Clearance Volume
Gasket Volume
Top Ring Volume
Deck Volume
Piston Top Land
1/2 Stroke
Compression Ht.
Cubic Inches
For the given dimensions, your compression ratio =