Water Sports & Diving
Water sports calculators for sailing wind, scuba air consumption, dive decompression, surfboard volume, kayak paddle length, and rowing stroke rate.
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Sailing Wind Calculator
Calculate apparent wind angle and speed from true wind conditions and boat speed. Determine your velocity made good (VMG) toward the wind.
Sail Area Calculator
Determine the optimal sail area for your boat based on displacement, hull length, and wind conditions. Includes sail area to displacement ratio.
Kayak Paddle Length Calculator
Find the right paddle length based on your height, kayak width, and preferred stroke style for comfortable and efficient paddling.
Scuba Air Consumption Calculator
Calculate your surface air consumption (SAC) rate and estimate remaining bottom time at depth based on tank size and pressure readings.
Dive Decompression Calculator
Estimate no-decompression limits, safety stop requirements, and dive risk levels. For educational planning only — always use certified dive tables or a dive computer.
Surfboard Volume Calculator
Find the ideal surfboard volume based on your weight, height, skill level, and fitness. Get the right float for your ability.
Rowing Stroke Rate Calculator
Calculate target stroke rate, split time, and estimated power for rowing pieces based on distance, target time, and skill level.
Wakeboard Rope Length Calculator
Find the ideal wakeboard rope length for your skill level, boat type, and rider weight to optimize your riding and progression.
Sailing Handicap Calculator
Calculate PHRF corrected time and time allowance for sailboat race scoring. Compare performance across different boat designs.
Canoe Loading Calculator
Calculate total load, remaining capacity, estimated freeboard, and safety rating for your canoe trip. Ensure safe weight distribution before launch.