CC to HP Calculator


About CC to HP & HP to CC Calculator: Simplifying Engine Power Conversions (Formula)

When it comes to engines, power output is a critical factor that influences their performance and functionality. Two common units used to measure engine power are cubic centimeters (CC) and horsepower (HP). These units serve different purposes and are used in various parts of the world. However, it’s not uncommon to encounter situations where you need to convert between CC and HP. That’s where the CC to HP & HP to CC Calculator comes in, simplifying these conversions effortlessly.

Understanding CC (Cubic Centimeters) and HP (Horsepower):

  • Cubic Centimeters (CC): This unit of measurement is typically used to denote engine displacement or the total volume of all cylinders in an engine. It represents the internal capacity or size of an engine. Engines with larger CC values generally have the potential to produce more power.
  • Horsepower (HP): Horsepower is a unit of power that measures the rate at which work is done. It’s commonly used to express the power output of engines. The higher the HP, the more power an engine is capable of delivering.

The Conversion Formula:

Converting from CC to HP and vice versa involves a straightforward formula, though it’s important to note that this conversion isn’t always exact due to variations in engine efficiency and design:

HP = (CC / 15) + a


  • HP represents the horsepower.
  • CC is the engine displacement in cubic centimeters.
  • “a” is a constant that may vary depending on the engine’s specific design and efficiency. For many small four-stroke engines, “a” is often around 1.

How the Calculator Simplifies Conversions:

  1. CC to HP Conversion: If you have the engine’s displacement in CC and want to know its approximate power output in HP, simply input the CC value into the calculator, and it will apply the formula to give you the estimated HP.
  2. HP to CC Conversion: Conversely, if you have the HP rating of an engine and want to know its approximate displacement in CC, input the HP value into the calculator, and it will rearrange the formula to provide an estimate of the engine’s CC.


  • Automotive Industry: The calculator is particularly useful for car enthusiasts, mechanics, and those involved in the automotive industry who need to compare engines or assess performance.
  • Small Engine Equipment: It’s valuable for determining the power output of small engines used in lawnmowers, generators, and other equipment.
  • Educational Purposes: The calculator can aid students and educators in understanding the relationship between engine size (CC) and power (HP) in various types of engines.


The CC to HP & HP to CC Calculator simplifies engine power conversions, offering estimates that are helpful for various applications, from automotive enthusiasts to professionals in the field. While it provides valuable insights, it’s essential to remember that real-world engine performance can be influenced by various factors beyond just displacement and horsepower, such as engine efficiency and design.