Boat Horsepower to Speed Calculation

Boat Horsepower to Speed Calculator

Enter engine power (HP):

Calculate Speed (MPH)

Save this calculator as a favorite and use it as often as you like: bookmark this calculator or press Ctrl+D.

This is how it works

Enter the engine power in horsepower (HP) and click “Calculate Speed (MPH)” to get an estimated boat speed. The tool uses a common rule of thumb where 1 HP ≈ 0.233 MPH, giving a simple approximation of speed.

Why use it?

This calculator provides a quick estimate of how fast a boat can go based on engine power alone. While actual speed depends on factors like wave height, hull design and weight, this tool gives captains, boaters, and enthusiasts a general idea of their boat’s potential performance.