Free Tools
Hiking & Backpacking Calculators
Practical tools built for the trail. Six free calculators — no account, no ads, no fluff.
Hiking Pace Calculator
Estimate how long your hike will take using Naismith's Rule, adjusted for fitness level, pack weight, and trail conditions. Get moving time, total time with breaks, and estimated finish time.
Hiking Water Calculator
Find out exactly how much water to carry based on your body weight, hike duration, intensity, temperature, and altitude. Includes carry vs. filter strategy recommendation.
Backpacking Fuel Calculator
Calculate how much stove fuel to bring for canister, alcohol, or solid fuel stoves. Accounts for group size, meals per day, season, and altitude. Recommends the right canister size.
Backpacking Calories Calculator
Calculate exactly how many calories you burn per day and how much food to carry. Accounts for body weight, intensity, weather, and altitude. Includes calorie density reference for 15 trail foods.
Gear Weight Calculator
Add your gear items and instantly see your base weight, total carried weight, and where you fall on the ultralight scale. Share your full kit via a single link.
Sleeping Bag Temperature Calculator
Find your ideal sleeping bag temperature rating based on the coldest night expected, your sleep style, and conditions. Avoid being too cold — or carrying too much weight.