Hiking Calories Calculator
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What Your Result Means
- Calories Burned: Total estimated energy expenditure for the entire hike, based on MET values adjusted for terrain, elevation gain, and pack weight. This includes your basal metabolic contribution during the activity.
- Calories per Mile: Average energy cost per mile of trail. Steeper terrain and heavier packs raise this number significantly — a steep rocky trail can burn 2–3× more per mile than flat ground.
- Calories per Hour: Hourly burn rate, useful for planning nutrition and hydration on longer hikes. A general guideline is to consume 200–300 calories per hour for hikes lasting more than 2 hours.
- Pace: Your average minutes per mile based on total duration and distance. Trail pace is typically much slower than road running or walking pace due to terrain and elevation.
How This Calculator Works
You enter your body weight, trail distance, total hiking time, elevation gain, pack weight, and terrain type. The tool assigns a base MET value for the terrain, adds adjustments for elevation gain per mile and the relative load of your pack, then multiplies by your weight in kilograms and time in hours. It assumes a steady pace over the full distance and does not adjust for rest breaks, altitude, or temperature.
Quick Questions
What is a MET and how does it affect the result?
A MET (metabolic equivalent of task) represents the energy cost of an activity relative to sitting still (1 MET). Hiking on flat terrain is about 5.3 METs, meaning you burn roughly 5.3 times more energy than at rest. Steeper, rougher terrain raises the MET value.
Does pack weight really change calorie burn that much?
Yes. Carrying a 30-pound pack on a 160-pound person increases calorie burn by roughly 13%. The formula scales the MET proportionally to the pack-to-body-weight ratio, reflecting the extra muscular effort of loaded hiking.
How accurate is this compared to a fitness tracker?
MET-based estimates are typically within 15–20% of measured values for most people. Fitness trackers with heart rate sensors may be more accurate for individuals, but they also have error margins. Both are best used as ballpark figures.
Should I eat back all the calories I burn hiking?
Not necessarily. If your goal is weight maintenance, replacing most of the burned calories makes sense. For weight loss, you might replace some but not all. For long hikes (4+ hours), fueling during the hike is important to avoid bonking regardless of your goal.
Sources
- Ainsworth et al. (2011) — Compendium of Physical Activities (MET values for hiking and walking activities)
- CDC — Physical Activity Basics (general activity and calorie expenditure guidelines)
- Pandolf et al. — Energy cost of loaded walking (effect of pack weight on energy expenditure)
Method & review
Estimate only. Results reflect your inputs and standard formulas — they are not financial, tax, legal, health, or investment advice. Verify important decisions with a qualified professional.