VMG to Wind Calculator

Windex Setup

NOTE: Zero or blank entries will be replaced with default values.

Click Here for Calibration Method

Flag spacing:deg
Enter flag width: deg
Enter tail width: deg


Enter angle of the wind:deg True Apparent
Wind Speed:knots True Apparent
Boat Speedknots


VMG to wind 0
T Wind Direction 90°
T Wind Speed 25
Apparent Wind Speed 35.4
Boat Speed 25
Apparent Wind Direction 45
TWS = AWS - BS * 0.41
Boat speed as % of true wind speed 100
VMG as % of true wind speed 0

masthead fly

Click on graph to print out larger paper that you can plot other points on.

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