Calculators Relating to
Propeller Selection

We currently have two prop size calculators (below), along with a collection of "conversion" style calculators to aid in determining various weights and measures relating to propeller selection.

Before you start, we would like to point out that these calculators are based on empirical data.
They are not intended to perform complex cavitation or efficiency calculations. The results provide "best size" propeller dimensions based on your input data. There will always be a number of propeller size combinations that will work on your vessel, finding the best one is the trick. These calculators will help guide you to determine various combinations of power, gear ratio, and propeller for your vessel. Due to the nature of these calculators, Vicprop will not accept any liability, financial or otherwise, for the calculations or results provided.

To begin, please select one of the calculators: