Hiking Calculators
Free hiking calculators.
Estimate trail time, pack weight, water needs, calorie burn, and more.
Altitude Sickness Risk Calculator
Estimate your risk of Acute Mountain Sickness (AMS) based on your current altitude, target altitude, and ascent rate. Plan safe acclimatization.
Hiking Calorie Burn Calculator
Calculate calories burned hiking based on your weight, distance, ascent, and pack weight. Uses MET values for accurate results.
Hiking Food Plan Calculator
Calculate how much food to pack for a backpacking trip. Based on days, calorie needs, and food weight. Never run low on the trail.
Hiking Pack Weight Calculator
Check if your backpack is the right weight for your body. The 10-20% rule explained. Calculate maximum safe pack weight for day hikes and overnight trips.
Hiking Water Needs Calculator
Calculate how much water to carry hiking. Based on duration, temperature, and exertion level. Prevent dehydration on the trail.
Naismith Rule Hiking Time Calculator
Estimate hiking time with the Naismith Rule: 1 hour per 5 km plus 1 hour per 600 m ascent. Adjust for fitness and terrain.
Trail Difficulty Calculator
Calculate trail difficulty using the Shenandoah formula: Difficulty = √(2 × elevation gain (ft) × distance (miles)). Rate any trail Easy to Strenuous.