Climbing & Mountaineering
Rock climbing and mountaineering calculators for route grades, fall factors, rope length, cam sizing, altitude acclimatization, and gear weight.
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Route Grade Converter
Convert climbing route grades between YDS, French, UIAA, British, and V-scale systems. Instantly translate difficulty ratings across international grading standards.
Rope Length Calculator
Calculate the minimum rope length needed for a climbing route based on wall height, anchor setback, knot allowance, and safety margin. Includes rappel length and recommended standard rope size.
Fall Factor Calculator
Calculate the fall factor from fall distance and rope paid out. Estimate impact force and severity rating to understand climbing fall dynamics.
Belay Braking Force Calculator
Calculate the braking and holding forces for different belay devices based on rope diameter, climber weight, and fall factor. Compare tubular, assisted-braking, and figure-8 devices.
Climbing Calorie Calculator
Estimate calories burned while rock climbing based on body weight, session duration, route difficulty, and wall angle. Compare energy expenditure across difficulty levels.
Hangboard Training Calculator
Plan your hangboard training progression with hang duration, rest intervals, and added weight progression. Calculate work-rest ratios and session volume for finger strength training.
Cam Sizing Calculator
Find the right cam size for a given crack width. Enter the crack measurement and get recommended cam sizes with expansion range and placement quality rating.
Altitude Acclimatization Calculator
Plan a safe acclimatization schedule for high-altitude mountaineering. Calculate recommended ascent rate, rest days, and altitude sickness risk based on Wilderness Medical Society guidelines.
Gear Weight Calculator
Calculate total climbing rack weight from selected protection, quickdraws, slings, and personal gear. See weight breakdown by category and identify where to save weight.
Approach Time Calculator
Estimate trail approach time for climbing based on distance, elevation gain, pack weight, and fitness level. Uses modified Naismith's Rule with Tranter's corrections.