According to The New York Times, stair climbing burns 5 calories per minute for a 120-pound person, 7 calories per minute for a 150-pound person and 9 calories per minute for a 180-pound person. The total amount of calories burned depends on the duration and intensity of the exercise.
According to The New York Times, increasing the intensity of stair climbing increases the caloric benefits. Running stairs rather than walking them multiplies the cardiovascular benefits and the number of calories burned. Nutribase states that 30 minutes of stair climbing burns anywhere from 126 calories for a 90-pound person to 420 calories for someone who weighs 300 pounds. Exercising on a stair climbing machine increases these numbers to 144 for a 90-pound person and 480 for a 300-pound person.