Hiking & Backpacking Calculators
Every number you need before you start walking. Each tool uses published, field-tested formulas — no black boxes — and they hand results to each other so a full hike plan takes minutes.
Hiking Time Calculator
Estimate how long a hike really takes with Naismith's rule refined for elevation gain, terrain, and your fitness level.
Hiking Water Intake Calculator
Work out how much water to carry per hour and for the whole hike, adjusted for heat, altitude, pack weight, and sun exposure.
Backpacking Calorie Calculator
Calculate hiking energy burn with the Pandolf equation — body weight, pack load, speed, and grade — plus how much food to pack.
Ultralight Gear Weight Budget Calculator
Set a base-weight budget by pack style and season, check it against the 20% body-weight rule, and see where to cut.
Wind Chill & Altitude Safety Calculator
Project summit temperature from the trailhead, compute wind chill with the NWS standard, and read the frostbite risk band.
Hiking Distance & Pace Converter
Convert miles ↔ km, feet ↔ meters, pace ↔ speed, and estimate your stride length and step count for any distance.