Electric Motor RPM to Speed Calculator

Convert electric motor RPM to boat speed based on propeller specifications.

Motor RPM

RPM

Propeller Pitch

inches

Gear Ratio

How to Use

Enter motor RPM
Enter propeller pitch in inches
Adjust gear ratio if applicable
Click Calculate to get speed estimate

Note: Actual speed may vary based on hull design, loading, and water conditions. The calculation assumes standard slip factors.

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