Get your engine's optimal compression ratio and total displacement in no time flat! Just complete your engine setup, click calculate, and you’re on your way to maximum performance.

This calculator is designed to show the different Compression Ratios for different sized engines.

This compression ratio calculator can be used to work out the compression ratio of your engine.

Instructions: Enter a value in the un-shaded boxes below as they pertain to your engine. Note: Manipulate the DOME/DISH & PISTON to DECK volumes to get the ratio you want. Click “Calculate” …

3 days ago · Input a positive number for valve reliefs/dish and/or piston below deck. Input a negative number if it has a dome and/or piston above deck.

Calculate the compression ratio of an engine using our calculator. Plus, learn the formulas to find the compression ratio.

The compression ratio calculator finds both the static and the dynamic compression ratio of your combustion engine.