Sailing Calculators

Performance ratios and passage planning tools for sailors.

🏃 Hull Speed

Waterline Length (LWL)

Units

⚠️ Capsize Screen

Beam

Displacement

Length Units

Weight Units

😌 Comfort Ratio

LOA (Length Overall)

LWL (Waterline Length)

Beam

Displacement

Length Units

Weight Units

⛵ Sail/Displacement Ratio

Sail Area (sq ft or sq m)

Displacement

Sail Area Units

Weight Units

⚖️ Length/Displacement Ratio

LWL (Waterline Length)

Displacement

Length Units

Weight Units

🧭 Passage ETA

Distance (nm or miles)

Speed (knots or mph)

🌬️ Upwind Distance

Straight-line Distance (nm)

Tacking Angle (degrees off wind)