Sailing Calculators & Tools
Professional-grade calculators for every aspect of sailing and navigation
Sailing Distance & Time Calculator
Calculate nautical distances between ports and estimate sailing time based on boat speed
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Tide Height Calculator (Rule of Twelves)
Calculate tide height at any time using the Rule of Twelves method
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Anchor Scope Calculator
Calculate proper anchor rode length for safe anchoring in various conditions
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True Wind Speed & Direction Calculator
Convert apparent wind to true wind accounting for boat speed and direction
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Sail Area & Power Calculator
Calculate sail area requirements and sail area to displacement ratio
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Hull Speed Calculator
Calculate theoretical hull speed and speed/length ratio for displacement hulls
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6
Professional Tools
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Accurate
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Forever