Cubic Inches Calculator
Calculate engine displacement in cubic inches, liters, and cubic centimeters. Determine engine size from bore, stroke, and number of cylinders.
Step 1: Engine Specifications
Engine Displacement Formula
Cubic Inches = (π/4) × Bore² × Stroke × Number of Cylinders
π/4 ≈ 0.7854
Step 2: Engine Type & Options
Common Engine Sizes
Small engines: 90-120 ci (1.5-2.0L)
Medium engines: 200-250 ci (3.3-4.1L)
Large engines: 350-400 ci (5.7-6.6L)
Performance: 400-500+ ci (6.6-8.2L+)
Engine Displacement Results
Total Engine Displacement
Engine Type Comparison
| Engine Type | Cylinders | Cubic Inches | Liters |
|---|
Engine Displacement Formula
Cubic Inches = (π/4) × Bore² × Stroke × Number of Cylinders
Where:
• Bore = Diameter of each cylinder (inches)
• Stroke = Distance piston travels (inches)
• Number of Cylinders = Total cylinders in engine
• π/4 ≈ 0.7854
To convert:
• Liters = Cubic Inches × 0.0163871
• Cubic Centimeters = Cubic Inches × 16.3871
Example Calculation
Example: 350ci V8 Engine
Bore: 4.00 inches
Stroke: 3.48 inches
Cylinders: 8
Calculation:
(0.7854) × (4.00²) × 3.48 × 8 =
0.7854 × 16 × 3.48 × 8 =
349.85 cubic inches ≈ 350 ci
Converted:
350 ci = 5.7L = 5735 cc
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