Engine Size Calculator

Introduction: The Engine Size Calculator is a valuable tool for automotive enthusiasts and mechanics. It helps in determining the engine size based on the bore size, stroke length, and the number of cylinders, providing essential information for vehicle performance and customization.

Formula: The engine size is calculated using the following formula: Engine Size (in cubic inches) = π * (Bore/2)^2 * Stroke * Cylinders. This formula takes into account the bore size, stroke length, and the number of cylinders to provide an accurate engine size measurement.

How to Use:

  1. Enter the bore size in inches.
  2. Specify the stroke length in inches.
  3. Enter the number of cylinders in the engine.
  4. Click the “Calculate” button to obtain the engine size in cubic inches.

Example: If you have a bore size of 4 inches, a stroke length of 3 inches, and 8 cylinders, use the calculator to determine the engine size for your vehicle.


  1. Q: Why is knowing the engine size important? A: Engine size affects performance and power. It’s crucial information for vehicle customization and maintenance.
  2. Q: How do bore size and stroke length impact engine size? A: Larger bore sizes and longer stroke lengths generally result in larger engine sizes, influencing power and torque.
  3. Q: Can I use the same engine size for different types of vehicles? A: Engine size should be matched to the vehicle type and its intended use. Different vehicles may require different engine sizes.
  4. Q: What does the number of cylinders contribute to engine size? A: More cylinders typically lead to a larger engine size, impacting overall power and performance.

Conclusion: The Engine Size Calculator simplifies the process of determining the size of your vehicle’s engine, providing valuable insights for automotive enthusiasts and professionals. Use this tool to make informed decisions and enhance the performance of your vehicle.

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