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Engine & Maintenance

Piston Displacement Calculator

Swept volume of one piston, plus mean piston speed at a chosen RPM. High mean piston speed is a durability red flag.

Inputs
Results
Live

  • Piston displacement

    449.49cc

  • Mean piston speed

    22.77m/s

    Aggressive race RPM

  • Mean piston speed

    4,482ft/min

Formula

cc = π/4 × bore² × stroke · MPS = 2 × stroke × RPM / 60

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Solve the missing dimension. Leave bore at 0 to find bore from displacement and stroke, or stroke at 0 to find stroke from bore.
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Static CR from bore, stroke, head chamber, piston dome/dish, deck height, and head-gasket volume.