What this stair climbing calorie calculator does
This calculator estimates calories burned during stair climbing using the MET (Metabolic Equivalent of Task) formula - the gold standard used by exercise physiologists and the 2011 Compendium of Physical Activities. Enter your body weight and how long you exercised; the calculator multiplies the activity's MET value by your weight (kg) and time (hours) to estimate kcal burned. Higher intensity = higher MET = more calories burned per minute.
Intensity guide for accurate results
Pick the intensity that matches what you actually did - not what you wished you did. Each stair climbing intensity has a specific MET value from peer-reviewed research. If you alternated paces (e.g., interval training), pick the average. For more precise tracking, use a heart rate monitor and the Heart Rate Calorie Calculator on HisabWeb - it accounts for individual cardiovascular response, which the MET method approximates.
What is MET (Metabolic Equivalent)?
MET = the energy cost of an activity relative to sitting quietly. 1 MET ≈ 3.5 mL O2 per kg of body weight per minute, or approximately 1 kcal per kg per hour at rest. Sitting = 1 MET; walking slowly = ~2.5 MET; running fast = ~13 MET. The Compendium of Physical Activities (Ainsworth et al., 2011) catalogs 821 activities with their MET values from oxygen-consumption studies. Multiplying MET × weight × time gives a robust calorie estimate for adults.
Why body weight matters
Heavier bodies burn more calories doing the same activity - more mass to move means more energy. A 90 kg person burns ~29% more calories than a 70 kg person doing the same workout. The MET formula scales linearly with weight, so accurate weight input is critical. Tip: use your current weight, not your goal weight, for the most realistic estimate.
Accuracy & limitations
MET estimates typically come within ±15-20% of metabolic-cart-measured values for moderate-intensity activities. Sources of variability: individual VO2max, body composition (more muscle = higher BMR), exercise efficiency (trained athletes burn fewer calories at the same speed), terrain, equipment, and even temperature. For more precision, use a heart-rate-based estimate (Keytel formula) or a metabolic cart in a lab.
Frequently asked questions
Roughly 4-6 kcal per flight (10-12 steps) for an average adult. Going up burns ~3x more than going down. Over a workday, taking stairs vs elevators for ~10 flights can add up to 40-60 kcal extra - small per day but ~12,000-22,000 kcal/year, equivalent to 1.5-3 kg of fat loss.
Per minute, fast stair climbing (MET 8.8) burns nearly as much as running 6 mph (MET 9.8), with two advantages: stronger leg muscles (quads, glutes, calves) and lower per-step impact than running. The downside: you need a tall stairwell or a step machine for sustained sessions.
Walking stairs (MET 4-5) is enough for general fitness; running stairs (MET 8.8) burns 70%+ more per minute and builds explosive leg power. For training, alternate: 1 set running up + walking down, 1 set walking up + walking down. The descent matters too - controlled walking down builds eccentric strength and protects knees.
Sources
- 2011 Compendium of Physical Activities: A Second Update of Codes and MET Values— Ainsworth et al., Medicine & Science in Sports & Exercise, 2011;43(8):1575-1581
- Physical Activity Guidelines for Americans (2nd edition)— US Department of Health and Human Services
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