Hiking Calorie Calculator

How Hiking Calories Are Calculated

Hiking calorie expenditure depends on several factors: your body weight, the distance covered, elevation gain, pack weight, terrain difficulty and duration. This calculator uses MET (Metabolic Equivalent of Task) values adjusted for these variables to give you an accurate estimate.

MET Values for Hiking

The base MET value for hiking on a maintained trail is approximately 6.0 (moderate effort). This increases with elevation gain, rough terrain and pack weight. Hiking uphill with a heavy pack can reach MET values of 10 or higher, approaching the intensity of running.

Pack Weight Matters

Every pound on your back increases calorie burn. As a rule of thumb, carrying a pack that weighs 10-15% of your body weight increases calorie expenditure by about 10-15%. A 30-pound pack on a steep trail can increase your burn by 30% or more compared to hiking the same trail unloaded.

Hydration Strategy

A good guideline is to drink about half a liter of water per hour of moderate hiking. In hot weather or at high intensity, increase this to 1 liter per hour. Start hydrating before you hit the trail and drink at regular intervals rather than waiting until you feel thirsty.

Best Trail Snacks

For sustained energy on the trail, combine complex carbohydrates with protein and healthy fats. Trail mix, energy bars, jerky, nut butter packets and dried fruit are excellent choices. Aim to eat small amounts frequently (every 60-90 minutes) rather than waiting for a big lunch break.

Food Planning

For day hikes, pack about 200-300 calories per hour of hiking. For multi-day backpacking, aim for 2,500-4,500 calories per day depending on intensity and your body size. On strenuous multi-day trips, it is nearly impossible to fully replace calories burned, so expect some caloric deficit.

Tips for Getting Accurate Results

For the most accurate results, use up-to-date numbers from official sources. Double-check your inputs before calculating — small errors in the starting values can lead to significantly different outputs. If you are comparing scenarios, keep all variables the same except the one you are testing. Save or screenshot your results for future reference. This calculator uses standard formulas and is designed to give you a reliable quick estimate, though professional advice may be needed for complex situations.