There is no such formula as the hp rating of an engine depends on many factors in addition to the cc size of the cylinders. There are approximations of this formula for various classes and designs of engine, but you have to remember that they only give rough estimates of hp and using such a formula for a different class or design of engine than it was intended for will give a completely incorrect answer.
150 cc a hp
What is 5.5 hp in cc?
1 HP= 15 CC so 1001 HP= 15015 CC's
There is no standard conversion from cc's to hp. But as a guide, 338cc = aprox 11hp
7hp
There is more to HP than just cc's.
how much cc's is a 6.5 hp engine
how many cc is a 13 hp
What is 5.5 hp in cc?
There is absolutely NO relationship between HP and cc. Cc is simply the 'swept volume' of the engine. Horsepower has NOTHING to do with cc.
This is from movingsnow.com: Here is a simple chart of approximate cc to torque to horsepower conversions. It's not exact, but it will give you a better idea of how big the new engines are. I used 3600 rpm in the formula for this comparison. 179 cc = 5 hp 205 cc = 8 to 9 Gross Torque = 5.5 to 6 hp 250 cc = 11 to 11.5 Gross Torque = 7 to 8 hp 305 cc = 13.5 to 14.5 Gross Torque = 9 to 10 hp 342 cc = 15.5 to 16.5 Gross Torque = 11 to 12 hp