Hiking Calorie Calculator
Hiking calorie calculator — estimate the calories you burn on a hike from your body weight, pack load, pace, slope and terrain using the Pandolf metabolic model (with a downhill correction). Far more accurate than a flat MET estimate. Runs entirely in your browser.
Hiking Calorie Calculator
How to Use the Hiking Calorie Calculator
Enter your weight
Pick kg or lb and enter your body weight and pack load.
Set the route
Enter your average pace and the grade of the slope.
Choose terrain
Select the surface — trail, sand, snow and so on.
Read the burn
See total calories, the per-minute rate and metabolic power.
Why Hiking Burns More Than You Think
Most calorie calculators treat hiking as a single activity with one fixed burn rate, which badly misrepresents what actually happens on a trail. Climbing a steep path with a loaded pack is a completely different metabolic event from ambling along a flat boardwalk, yet a simple MET estimate gives them nearly the same number. This calculator uses the Pandolf equation instead — a model developed by US Army researchers to predict the energy cost of marching with loads — so it responds to the four things that really drive how hard your body works: your weight, your pack, your pace and the slope, all scaled by the kind of ground underfoot.
Each input pulls a real lever. Body weight and pack load set the mass you must lift with every step, and the model adds an extra penalty for carrying a heavy load relative to your size, which is exactly why ultralight backpackers fuss over every gram. Grade is powerful: hauling yourself uphill against gravity can double or triple the energy cost compared with level ground, while descending costs less — the tool applies the Santee downhill correction for negative grades, though it is worth remembering that easy-on-the-lungs descents can still punish your knees. Pace enters as a square term, so picking up speed costs disproportionately more energy. Finally, the terrain factor captures the surface: paved road is the easy baseline, a trail is harder, and soft sand can almost double the effort because every footfall sinks and slips.
The result is reported three ways — total calories for the duration you enter, a per-minute rate, and the underlying metabolic power in watts — so you can compare routes, plan how much food and water to carry, or simply appreciate that a loaded uphill hike can rival a hard gym session. Treat the figure as a solid estimate rather than a precise measurement: real expenditure also depends on your fitness, gait efficiency, altitude and the weather, none of which a general model can know. Used sensibly, though, it is far more honest than a flat one-size-fits-all number, and because everything is computed in your browser, your details never leave your device.
Load and slope, not just distance, decide how hard a hike is — which is why a flat MET number gets it so wrong.
10 Facts About Hiking Energy
Carrying a heavy pack sharply raises calorie burn.
Going uphill can double or triple the energy cost.
Soft sand roughly doubles the effort of paved ground.
The Pandolf equation was developed for the US Army.
It models load carriage, which simple METs ignore.
Steep downhills burn less, but stress knees more.
Pace matters: energy rises with the square of speed.
A loaded uphill hike can rival a hard gym session.
Heavier hikers burn more for the same route.
This calculator runs in your browser — nothing is uploaded.
Frequently Asked Questions
- It uses the Pandolf equation, a metabolic model developed by US Army researchers that predicts the energy cost of walking from your body weight, the weight of your pack, your walking speed, the grade of the slope and a terrain factor. For downhill sections it applies the Santee correction, which reduces the estimate because descending costs less energy than climbing.
- A MET-based calculator assigns one fixed rate to “hiking” regardless of conditions. The Pandolf model is far more responsive: it accounts for how much you are carrying, how steep the trail is, and what surface you are on. Carrying a 15 kg pack up a sandy slope burns dramatically more than strolling a flat path, and only a load-and-grade model captures that difference.
- The terrain factor scales the energy cost for the surface you are walking on. Paved road is the baseline at 1.0; a trail is around 1.3, grass and gravel about 1.2, snow roughly 1.6, and soft sand as high as 2.1 because your feet sink and slip. Choosing the right surface meaningfully changes the result, since difficult ground can nearly double the work.
- A lot. The model treats the load as extra mass you must move on every step, and it adds a penalty for carrying weight that grows with how heavy the pack is relative to your body. This is why experienced hikers obsess over pack weight: shedding a few kilograms noticeably lowers the energy cost over a long day.
- Yes, descending costs less energy than climbing, and the calculator reflects that by applying a downhill correction for negative grades. However, very steep descents place high mechanical stress on your knees and quads even though the calorie burn is lower, so “easier on the lungs” does not mean “easier on the joints”.
- Use your realistic average over the hike, not a brief burst. A relaxed hiking pace is around 4 to 5 km/h on easy ground, dropping well below that on steep or rough terrain. Because energy cost rises with the square of speed, even modest changes in pace shift the result, so an honest average gives the most useful estimate.
- No — treat it as a well-grounded estimate. Real energy expenditure varies with fitness, gait efficiency, altitude, temperature, wind and individual physiology, none of which the base model includes. The Pandolf equation is widely used precisely because it is a good general predictor, but your true burn could differ by a margin in either direction.
- Yes. Switch the unit selector to pounds and enter your body weight and pack load in pounds; the tool converts internally to the metric units the model expects. The speed is entered in kilometres per hour and the grade as a percentage regardless of the weight unit you choose.
- Grade is the steepness of the slope as a percentage: a 10% grade rises 10 metres over 100 metres travelled. You can estimate it from a map’s contour lines or a GPS watch, which often reports grade directly. Enter a positive number for uphill and a negative number for downhill sections.
- Completely free, with no account or limit. It works offline once the page has loaded and collects no data — your inputs never leave your device.
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