Boost Horsepower Calculator

Find hp gain from boost pressure.

Boosted horsepower (hp) 295.24

Step-by-step with your numbers:

1. Values used:

2. Stock horsepower = 200 hp

3. Boost = 7 psi

4. Boosted horsepower = 295.24hp

Did we solve your problem today?

Rough estimate: boost increases power by relative pressure ratio. Actual results depend on tuning.

The math behind it

hp ≈ stock HP × (1 + boost/14.7).

Turbo vs SC?

Both follow pressure ratio; turbo usually adds more at the same psi.