Hiking burns more calories than walking on flat ground, but exactly how much depends on your body weight, pace, terrain, and the load you are carrying. This hiking calories per mile calculator gives you a realistic per-mile estimate using standard metabolic equivalent (MET) values, then scales it to your total distance. Whether you are planning a weekend backpack, tracking a daily trail walk, or comparing routes, you get clear numbers you can actually use.
Just enter your weight, choose a typical pace for your hike, and select how hilly the route is and how heavy your pack is. The calculator instantly shows your calories burned per mile and total for your full hike, along with a simple breakdown so you can see how each factor moves the number. No apps or wearable required — a reliable estimate in about 30 seconds.
🥾 Hiker Details
If you enter valid values, your per-mile estimate will appear here.
How the Calculation Works
The calculator uses the standard MET (metabolic equivalent) method, the same underlying approach used in most fitness research and calorie charts. A MET value tells you how many times your resting metabolic rate an activity requires. For example, a MET of 4.5 means you burn 4.5 times more energy per minute than you do sitting quietly.
Calories per hour = that result × 60
Calories per mile = calories per hour ÷ hiking speed (mph)
Total calories = calories per mile × total miles
The base MET values come from published compendiums of physical activity. We use 4.0 for a leisurely 2 mph hike, 4.5 for a moderate 3 mph hike, and 5.5 for a brisk or strenuous 4 mph hike. You then add a terrain modifier and a pack-load modifier to reflect the extra effort of climbing and carrying weight. The result is an estimate, not an exact measurement, but it is accurate enough for meal planning, training, and comparing routes.
How to Use This Tool
- Enter your body weight and choose pounds or kilograms.
- Select the pace that best matches your hike. If you are unsure, choose Moderate.
- Pick a terrain description and pack load. These add to the intensity.
- Enter a distance in miles. The default of 3 miles is a typical short day hike, but you can change it to any distance.
- Press Calculate Calories. Your per-mile number and total for the full distance appear immediately.
Try changing only one input at a time to see how sensitive the result is. You will quickly notice that adding a heavy pack or choosing a steep route can raise your per-mile burn by 30–50% compared with the same hike on flat ground with no pack.
Worked Examples
Weight = 150 lb ÷ 2.2046 = 68 kg
Base MET = 4.5 (moderate 3 mph), terrain +0.5, light pack +0.3 → effective MET = 5.3
Calories per hour = 5.3 × 3.5 × 68 ÷ 200 × 60 = 378 kcal/hr
Calories per mile = 378 ÷ 3 mph = 126 kcal/mile
For a 5 mile hike: about 630 kcal
Weight = 200 lb ÷ 2.2046 = 90.7 kg
Base MET = 4.0 (leisurely pace because the ground is steep), terrain +1.0, heavy pack +1.0 → effective MET = 6.0
Calories per hour = 6.0 × 3.5 × 90.7 ÷ 200 × 60 = 571 kcal/hr
Calories per mile = 571 ÷ 2 mph = 286 kcal/mile
For a 4 mile hike: about 1,143 kcal
Factors That Change Your Burn
Pace matters, but terrain and pack weight often matter even more. A hiker moving slowly up a steep grade can easily burn more per mile than a faster hiker on a smooth flat rail trail. The per-mile number is useful because it normalizes time: you may walk fewer miles in a day on steep ground, but each mile costs more energy.
Other factors include temperature, altitude, trail surface, and how efficient your walking economy is. Cold weather and high altitude both increase energy cost slightly, while very fit hikers may become so efficient that their numbers drift lower. The calculator cannot capture every variable, but it gives a solid central estimate for planning. For a faster version of the same idea, see the jogging calories per mile calculator; for an hourly hiking estimate, try the trail calories per hour calculator.
Reference: Approximate Calories per Mile
| Weight | Easy flat (MET 4.0) | Moderate hills (MET 5.0) | Steep + pack (MET 6.5) |
|---|---|---|---|
| 120 lb (54 kg) | ~112 cal/mile | ~140 cal/mile | ~182 cal/mile |
| 150 lb (68 kg) | ~140 cal/mile | ~175 cal/mile | ~228 cal/mile |
| 180 lb (82 kg) | ~170 cal/mile | ~212 cal/mile | ~276 cal/mile |
| 200 lb (91 kg) | ~188 cal/mile | ~235 cal/mile | ~305 cal/mile |
Values are rounded and based on a 3 mph pace for the flat and moderate columns and a 2 mph pace for the steep column. Use the calculator above for your exact inputs.
Frequently Asked Questions
Is this more accurate than a fitness watch? Fitness watches estimate calorie burn using heart rate and motion sensors. This calculator uses the same MET logic but in a more transparent way. For flat, steady hiking the two are usually within 10–15% of each other. For steep terrain and heavy packs, watches often underestimate because they do not detect the load you are carrying.
Can I use this for hiking on flat city trails with a backpack? Yes. Choose Gentle trail as the terrain and pick a pack option that matches the weight you are carrying. The calculator will treat the added pack weight as extra intensity, which is exactly what you want for urban training walks.
Why is calories per hour also shown? Calories per hour helps you plan snacks and water for long days. If a hike is expected to take 6 hours, multiply the hourly figure by 6 to get a rough total when the distance is not yet known. The per-mile figure is better when distance is the main variable.
How should I adjust for very steep grades? If you are hiking up a sustained grade of 10% or more, choose Brisk / Strenuous pace and Steep & rocky terrain. That combination pushes the effective MET toward 7–8, which matches the effort of climbing with a loaded pack.