Convert cubic centimeters to horsepower calculator

Convert engine displacement (cubic centimeters) to horsepower power output using engine RPM data

Input Parameters

Calculation Results

Calculation Formula

HP = (CC × RPM × 0.000018) ÷ 2

Where:
HP = Horsepower
CC = Cubic centimeters
RPM = Revolutions per minute

This calculation provides an estimated horsepower value based on displacement and RPM. Actual horsepower may vary based on other factors.

Convert cubic centimeters to horsepower calculator Calculator Usage Guide

Learn how to use the calculator to estimate engine horsepower from displacement and RPM

How to use this calculator

  1. Enter the engine displacement in cubic centimeters (cc). This is typically found on the engine specifications.
  2. Enter the engine's peak RPM (revolutions per minute). This is usually the RPM at which the engine produces maximum horsepower.
  3. Click the "Calculate" button to compute the estimated horsepower.
  4. The calculator will display the estimated horsepower based on the formula: HP = (CC × RPM × 0.000018) ÷ 2

Understanding the formula

The formula used in this calculator is a simplified approximation that relates engine displacement to horsepower output at peak RPM. The constant 0.000018 is a conversion factor that estimates the relationship between cubic centimeters and horsepower. Note that this formula provides a rough estimate and actual horsepower may vary based on many factors including:

  • Engine efficiency
  • Engine design and tuning
  • Air-fuel mixture
  • Drivetrain losses

Example

If an engine has a displacement of 2000 cc and reaches peak RPM at 7000 RPM, the estimated horsepower would be:
HP = (2000 × 7000 × 0.000018) ÷ 2 = 126 HP

Applications

This calculator can be useful for:

  • Comparing engine performance specifications
  • Estimating potential horsepower from displacement
  • Understanding engine performance characteristics