PHRF Calculator® - How Fast Is Your Boat?

Calculates Approximate Average Boat Speed and Seconds per Mile Speed Differences

Assumes 10 knots True Wind Speed, a Windward/Leeward Course, optimal jibing angles, and flat water. Calculated speed is an approximation assuming normal pointing ability, etc. A high pointing boat capable of tacking through smaller angles or a boat capable of reaching lower downwind might have somewhat less boat speed for the same PHRF rating.

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Enter your PHRF Rating:


Average Boat Speed (Knots):

Average Speeds for Rating Differences of Plus and Minus 15 Seconds per Mile

-15 -12 -9 -6 -3 0 +3 +6 +9 +12 +15

Speed Differences for 3 Second Rating Increments

-15 -12 -9 -6 -3 0 +3 +6 +9 +12 +15

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