Kayaking Calculators
Free kayaking calculators: paddle length by height and style, hull speed, stroke rate, trip distance, calorie burn, and more tools.
Kayak Ferry Angle Calculator
Calculate the angle needed to paddle across a moving current without being swept downstream. Enter current speed and paddle speed to get your ferry angle.
River Gradient Calculator
Calculate river gradient in feet per mile from elevation and distance. Matches gradient to whitewater difficulty class from Class I to Class VI.
Sea Kayak Cargo Volume Calculator
Calculate sea kayak cargo capacity by hatch size and trip duration. Get usable liters for fore, aft, and day hatches and compare against typical gear loads.
Kayak Hull Speed Calculator
Calculate the theoretical hull speed of your kayak from its waterline length. Understand why longer kayaks are faster and plan your paddling effort.
Kayak Load Capacity Calculator
Calculate safe kayak load from weight capacity, paddler, and gear weight. Returns payload percentage and recommended 70% performance load for touring kayaks.
Kayak Paddle Length Calculator — Find Your Perfect Size by Height
Find the right kayak paddle length for your height, kayak width, and paddling style. Covers touring, recreational, whitewater, and high-angle technique.
Kayak Stroke Rate and Speed Calculator
Calculate kayak speed from stroke rate, paddle length, and efficiency factor. Returns km/h and mph plus the effect of stroke rate on paddling performance.
Kayak Tidal Current Effect Calculator
Calculate how tidal current affects your kayak speed and course. Find your actual speed over ground when paddling with or against a current.
Kayak Trip Distance Calculator
Plan your kayaking trip. Calculate distance you can paddle in a given time at your cruising speed, accounting for breaks and tides.
Kayak Wind Resistance Calculator
Calculate wind resistance and speed penalty on a kayak from wind speed and paddle heading. Returns drag, headwind, and watts to maintain target pace.
Kayaking Calories Burned Calculator
Calculate calories burned kayaking from body weight, duration, and intensity. Covers flat water, touring, sea kayaking, and whitewater with MET estimates.