Engine Displacement Calculator
Calculate engine displacement (cc) from cylinder dimensions
Calculate Engine Displacement
Common values: 1, 2, 3, 4, 6, 8, 10, 12
Internal diameter of the cylinder
Distance traveled by the piston
Engine Displacement Results
Formula: V = N × L × π × D² / 4
Calculation: 0 × 0.0mm × π × 0.0²mm / 4
Single cylinder: 0.0 cc
Bore/Stroke ratio: 0.00
Engine Configuration Analysis
Example Calculation
4-Cylinder Engine Example
Number of cylinders: 4
Bore diameter: 50 mm
Stroke length: 250 mm
Step-by-Step Calculation
V = N × L × π × D² / 4
V = 4 × 250 × π × 50² / 4
V = 4 × 250 × π × 2500 / 4
V = 1,963,495 mm³
V = 1,963.5 cc ≈ 1.96 L ≈ 119.8 cu. in.
Engine Categories
Small Engine
Motorcycles, scooters
Motorcycle/Small
Sport bikes, small cars
Compact Car
Economy vehicles
Mid-size Car
Family sedans, SUVs
Large/Truck
Pickup trucks, large SUVs
Engine Facts
Displacement = volume swept by all pistons
Larger displacement typically means more power
Higher displacement usually consumes more fuel
Bore/stroke ratio affects engine characteristics
Understanding Engine Displacement
What is Engine Displacement?
Engine displacement, measured in cubic centimeters (cc) or liters, represents the total volume of air displaced by all pistons in an engine during one complete cycle. It's a key indicator of engine size and potential power output.
Why is it Important?
- •Determines engine power potential
- •Affects fuel consumption and efficiency
- •Used for vehicle classification and taxation
- •Indicates engine breathing capacity
Displacement Formula
V = N × L × π × D² / 4
- V: Engine displacement (volume)
- N: Number of cylinders
- L: Stroke length (piston travel distance)
- D: Bore diameter (cylinder diameter)
- π: Pi (≈ 3.14159)
Note: This formula calculates the swept volume - the actual volume of air-fuel mixture displaced during engine operation.
Bore-to-Stroke Ratio Effects
Oversquare (Bore > Stroke)
- • Higher RPM capability
- • Better high-speed breathing
- • More aggressive cam profiles possible
- • Common in racing engines
Square (Bore ≈ Stroke)
- • Balanced design
- • Good power and efficiency
- • Versatile performance
- • Common in modern engines
Undersquare (Bore < Stroke)
- • Better low-end torque
- • Improved fuel efficiency
- • Longer lever arm effect
- • Common in diesel engines