# Horsepower vs CC: Difference and Comparison

As today’s generation is creating more mind-blowing cars and other vehicles like Audi, Ferrari and BMW, it has become necessary or vehicle lovers to know more about the concept of “Horsepower” and “Cc”.

## Key Takeaways

1. A horsepower is a unit of measurement for the power output of an engine, indicating the engine’s ability to perform work.
2. CC (cubic centimeters) is a unit of measurement for the size of an engine’s displacement, indicating the volume of the cylinders in the machine.
3. Both horsepower and CC are related to engine performance, but horsepower measures power output, while CC measures engine size or displacement.

## Horsepower vs CC

The difference between Horsepower and CC lies in its definition; Horsepower is the measurement of the engine’s power, while cc is the measurement of the volume or size of the engine. However, no matter how different the two words seem, they have a significant relationship and can be converted into another.

In earlier times, horses were so helpful in drawing carriages that people started referring to it as a measurement of power which soon came to be known as “horsepower”.

“Cc” on the other hand, is a much newer term. The “Cubic centimetres” or cc is used to measure the volume of the automobile engine.

## What is Horsepower?

Horsepower is the unit of measurement used to measure the power of an automobile engine. The higher the Horsepower or HP, the higher the power sent to the wheels and, thus higher the car’s speed.

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It is measured in Brake-horse-power or bhp, Pferdestärke or PS, the German translation of HP. It is measured in the feet-pound-force-per-second or fps in the British system, while in the metric system, it is measured in Kilowatts or KW.

Horsepower is of two types- Frictional Horsepower and Indicated Horsepower. Indicated Horsepower is defined as the original power used by the automobile engine.

Knowing a vehicle’s horsepower is reasonably necessary to understand the speed and performance of its engine. Thus, it is also known as the output of the machine.

The Indicated Horsepower of an engine can be calculated as-

I.H.P = ((PLAN x n) / 2) ÷ 4500

(where, P = Mean effective pressure in kg/cm², L = Length of stroke, A = Area of piston in cm², N = RPM of crankshaft, n = Number of cylinders)

B.H.P = (Torque x RPM) ÷ 5252

## What is CC?

Cubic Centimetres or Cc are used to know the size of the automobile engine. It also signifies how large and heavy the engine is. Thus, it helps us to understand the pumping capacity of the machine.

1000 cc = 1 litre.

This means that a 1000 cc engine is the equivalent displacement to a 1-litre engine. The cc of an automobile’s engine is the total volume of all the cylinders in that particular engine.

Thus, it measures the swept volume of the cylinders of the engine.

A higher cc can be achieved by making the vehicle’s engine larger and more robust, leading to more displacement.

The following formula can calculate cubic centimetres- 0.7854 x bore x bore x stroke x number of cylinders. However, there are other far more complex formulas as well.

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Moreover, the displacement of a vehicle can be calculated in cubic inches by substituting the measurements in inches – 8.1cm = 3.189″ & 7.76cm = 3.055″, giving 0.7854 x 3.189″ x 3.189″ x 3.055″ x 4 = 97.6 cu.in.

It is important to note that the cubic capacity of vehicles is between the range of 50 ccs to 1500 cc.

## Main Differences Between Horsepower and CC

1. Cc is used as the measure of displacement, whereas horsepower is the work measurement.
2. The cc of an engine is constant, while the engine’s horsepower is variable.
3. The cc indicates the engine’s capacity, while horsepower is the power measurement unit.
4. Cc is measured in cubic centimetres while horsepower is measured in Kilowatt.
5. Horsepower is more critical as it is used to signify the speed of a vehicle, while cc is just used for indicating the physical dimension of the automobile engine.

References

Last Updated : 11 June, 2023

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### 23 thoughts on “Horsepower vs CC: Difference and Comparison”

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