Backpacking Food Calorie Calculator
Calculate daily calorie needs for backpacking.
Plan how much food to carry per day based on pack weight, terrain, and duration.
Daily Calorie Needs
How Backpacking Food Calories Are Calculated
Backpacking burns significantly more calories than everyday life. Your daily caloric needs on trail depend on body weight, pack weight, terrain, and distance.
Backpacking Calorie Formula:
Daily Calories = BMR × Activity Factor + Pack Penalty
Where:
- BMR (Mifflin-St Jeor for men) = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5
- Activity Factor = 1.9–2.5 for strenuous hiking
- Pack Penalty = add ~100 calories per 5 kg of pack weight above 10 kg
Simpler Field Estimate: Most backpackers use: 400–600 calories per hour of hiking depending on terrain and pack.
Worked Example: A 75 kg, 30-year-old male hiking 8 hours/day with a 15 kg pack:
- BMR ≈ 1,800 calories
- Hiking = 500 cal/hr × 8 hr = 4,000 calories
- Pack penalty = (15−10)/5 × 100 = 100 calories
- Total ≈ 5,900 calories/day
Food Weight Targets:
- Minimum: 400 g of food per day (~1,600 kcal) — short trips only
- Standard: 550–650 g/day (~2,400–2,800 kcal)
- Cold weather/high effort: 700–800 g/day (~3,500+ kcal)
Calorie-Dense Foods (cal/100g):
- Olive oil: 884
- Nuts/nut butter: 580–620
- Freeze-dried meals: 400–500
- Energy bars: 380–450
- Oats: 370
Prioritize fat-rich foods — they deliver more calories per gram than carbs or protein.