You enter your body weight, choose a ski type and intensity level, and set a duration. The tool looks up the corresponding MET value from the Compendium of Physical Activities, converts your weight to kilograms if needed, then multiplies MET × weight (kg) × hours to estimate total calories burned. A walking comparison (MET 3.5) is calculated the same way and subtracted to show the bonus burn.
Cross-country skiing is self-propelled — you push with both arms and legs continuously, engaging nearly every major muscle group. Downhill skiing involves more standing and turning with gravity doing much of the work, plus chairlift rest between runs.
Yes, mildly. At higher elevations your body works slightly harder to process oxygen, and cold temperatures increase calorie expenditure as your body generates extra heat. These factors can add roughly 5–15% to the estimate, but individual variation is large.
For downhill skiing, it depends on accuracy preference. If you include lift time, the result will overestimate slightly since you are resting on the lift. For the most accurate number, count only active skiing time.
MET values are population averages from controlled studies. Individual results can vary by 15–20% based on fitness level, technique, terrain, and conditions. Treat the number as a useful approximation, not a precise measurement.
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.