Engine Displacement Calculator
Calculate displacement from bore and stroke, or reverse-engineer bore/stroke from a known displacement.
Famous Engine Reference
| Engine | Bore | Stroke | Displacement | Note |
|---|---|---|---|---|
| Honda B16A | 81mm | 77.4mm | 1,595cc | Classic VTEC |
| Toyota 2JZ-GTE | 86mm | 86mm | 2,997cc | Square engine, twin turbo |
| GM LS3 V8 | 103.25mm | 92mm | 6,162cc | Corvette / Camaro |
| Ford Coyote 5.0 | 92.2mm | 93mm | 4,951cc | Mustang GT |
| Hemi 6.2 Hellcat | 103.9mm | 90.9mm | 6,166cc | Hellcat / Demon |
What Engine Displacement Means
Displacement is the total volume swept by all pistons in one cycle — the sum of each cylinder's bore area times stroke length. Larger displacement generally means more air and fuel can be burned per cycle, producing more power. Modern forced-induction engines (turbo/supercharged) can produce far more power per liter than naturally aspirated engines by pressurizing the intake.
Bore vs. Stroke Characteristics
An "oversquare" engine (bore larger than stroke) revs more freely and produces peak power at higher RPM. An "undersquare" or "long-stroke" engine produces more torque at lower RPM and is typically more fuel-efficient. A "square" engine (bore equals stroke, like the Toyota 2JZ) balances both characteristics.
Liters vs. Cubic Inches
The automotive industry switched from cubic inches to liters in the 1980s. The conversion is: 1 liter = 61.02 cubic inches. Older American muscle cars are often described in cubic inches (a 350 Chevy is 5.7L), while modern engines use liters worldwide.