Calories Burned Hiking: How Our Estimate Works

Distance, ascent, pace, surface, body size and carried load all affect hiking effort. An online tool estimates that effort; it cannot measure your personal calorie expenditure.

The formula used by HikeLoad

Our hiking calorie calculator uses this simplified planning heuristic:

Estimated moving kcal = (body kg + pack kg) × (0.55 × distance km + 0.01 × ascent m).

The coefficients are assumptions of this tool. We do not claim that this formula has been independently validated. It omits pace, surface, descent, weather and individual physiology, so apparent precision in the result should not be confused with accuracy.

Check a worked example

For a 75 kg person with a 10 kg pack walking 15 km with 600 m of ascent: 85 × (0.55 × 15 + 0.01 × 600) = 1,211.25 kcal, displayed as 1,211 kcal. With identical distance and ascent, adding 1 kg to the 85 kg combined mass changes this model's result by about 1.18%, not 5–8%.

A different approach: MET estimates

The Compendium of Physical Activities provides reference MET values for specific activities. These support a time-based approximation: gross kcal ≈ MET × body kg × hours. Gross energy includes resting energy during those hours. This is a different method from our distance-and-ascent heuristic; the two estimates should not be added together.

Use estimates without double-counting

A hike estimate is not a whole-day food target. Check whether your chosen method reports active energy or total energy before combining it with a resting estimate. See planning a daily backpacking energy budget for a worked example.

For packing, use the food-weight calculator with the calories and weights from your actual food labels. Keep your route and food plan together in HikeLoad so you can account for walking days, rest days and resupply stops separately.