How Superchargers Work: A Horsepower Cheat Code

A supercharger acts as a secret weapon for your vehicle’s horsepower, boosting its performance significantly. But how does it work? Essentially, a supercharger compresses air, enabling the engine to take in more fuel and consequently produce more power. Connected to the engine by a belt, a supercharger is a power multiplier, demanding some energy to operate but generating far more power than it consumes.

Boost Horsepower Calculator: Unleash the Numbers in Seconds!

Calculating the additional horsepower a supercharger brings to your engine is made simple with our Boost Horsepower Calculator. All you need to input is your naturally aspirated engine’s current power output and the desired supercharger pressure. The calculator then provides the boosted power output, typically running between 6 and 9 pounds per square inch (psi). The default value is set at 6 psi, but you can customize it.

🙋 Important Note: While our calculator provides a solid estimate, real-world results may vary, especially for larger engines or those using different fuels.

Formula Behind the Magic: Understanding the Math

The Boost Horsepower Calculator employs the formula:

Boosted Power=(�14.7)×�+14.7Boosted Power=(14.7P​)×N+14.7


  • Boosted Power: Power after adding the supercharger.
  • P: Pressure produced by the supercharger.
  • N: Power before supercharging.
  • 14.7: Standard atmospheric pressure in pounds per square inch.

Supercharge vs Turbocharge: Power-Boosting Options

When aiming to amplify your naturally aspirated engine’s power, you have three choices:

  1. Stage 3 Tune: An expensive option involving a complete engine rebuild.
  2. Turbocharger: Common and effective, especially in sports cars and diesel engines.
  3. Supercharger: A popular method comparable to turbochargers, offering instant throttle response and low-end torque.


  • Turbocharger: Harnesses exhaust gases to spin a turbine and compress incoming air.
  • Supercharger: Mechanically driven by the engine, directly compressing air before supplying it to the engine.

Both options increase power by providing more air to the engine, allowing for increased fuel consumption and, consequently, more power.

Additional Tools for Your Engine Arsenal

  1. Engine Horsepower Calculator: Predict quarter-mile time results after deciding between supercharging and turbocharging.
  2. Race Time Improvement: Track your lap time improvements with our calculator tailored for tuned engines.
  3. Fuel Consumption: Keep control of maintenance and fuel costs with our fuel consumption calculator.

Upgrade your horsepower game effortlessly with our Boost Horsepower Calculator – because who doesn’t want a little extra power under the hood?