EngineCalc

Shop utility calculator for engine builders, mechanics, car enthusiasts and mechanical engineers. Quickly compute:
✓ static compression ratio
✓ rod ratio
✓ displacement
✓ speed via RPM, tire diameter etc.
✓ rod angle

Play with values to find ideal rod ratio, or required deck height for desired compression ratio.
Find best tire diameter and gearing combo for your vehicle.

*Current input fields are in metric units.
*Version 3 now includes a rod angle calculator and some UI changes!

Future versions likely to include:
✓ imperial units
✓ piston speed
✓ live graphs? RPM vs Velocity...