Watersports calculators
7 calculators Fish Weight Calculator: Estimate Catch Weight by Length and Girth Estimate fish weight from length and girth in seconds. Supports largemouth bass, smallmouth bass, trout, walleye, and northern pike.
Open Fishing Reel Line Capacity Calculator: Mono, Braid and Fluoro Calculate how much monofilament, braid, or fluorocarbon your reel holds. Enter spool dimensions to find line capacity in yards or metres, with backing support.
Open Hull Speed Calculator Calculate hull speed of any displacement vessel. Enter waterline length in feet or metres and get speed in knots, mph, km/h, plus Froude number and speed-length ratio.
Open Kiteboarding Calculator Find the right kite and board size for your weight, wind speed, and riding style. Covers beginner to advanced, foilboard, and directional, plus a reverse wind mode.
Open Scuba Weight Calculator Calculate the lead ballast weight for scuba diving. Enter your body weight, wetsuit, tank type, water, and experience for a personalised recommendation.
Open Swim Time Converter: SCY, SCM, and LCM Convert competitive swimming times between Short Course Yards, Short Course Meters, and Long Course Meters. Stroke-specific factors, instant results, worked steps.
Open Windsurfing Calculator Calculate your ideal windsurfing sail size, board volume, fin depth, and planing speed from wind strength, rider weight, skill level, and discipline. Instant results.
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