Prepare for your hike
Know before you go
Get your complete hike preparation report
Time estimate, calories, water needs, pack weight check, and difficulty rating — all from 3 quick questions.
Start the Hike Prep Wizard →All hiking calculators
Eight free tools covering every aspect of hike preparation — from planning your route to choosing your gear.
Hiking Time Calculator
How long will your hike take? Three proven models give you a realistic range.
Hiking Calorie Calculator
How many calories will you burn? Built on the Pandolf equation from sports science.
Backpack Weight Calculator
Is your pack too heavy? Calculate your pack-to-body-weight ratio instantly.
Sleeping Bag Calculator
What temperature rating do you need? Adjusted for altitude, shelter, and sleep style.
Trail Difficulty Calculator
Easy, moderate, or strenuous? Get an objective difficulty score for any trail.
Hiking Water Calculator
How much water to carry? Accounts for temperature, exertion, and body weight.
Tent Size Calculator
What size tent do you need? Manufacturer ratings are almost always optimistic.
Hiking Boot Fit Calculator
Your street shoe size is not your hiking boot size. Find your correct fit.
Most hiking calculators online use oversimplified formulas that ignore pack weight, terrain, and individual physiology. These tools are built on validated research including the Pandolf equation, Naismith and Tobler time models, and the EN/ISO sleeping bag standard. Every calculator was designed by a physiotherapist who understands how the body actually responds to hills, heat, and heavy packs.