How the calories-burned-standing calculation works
This calculator uses the standard MET (Metabolic Equivalent of Task) energy-expenditure formula from the American College of Sports Medicine:
Calories burned = MET × 3.5 × body weight (kg) × minutes ÷ 200
One MET is the energy your body uses at rest, defined as an oxygen uptake of 3.5 millilitres per kilogram of body weight per minute. Multiplying by the activity's MET value scales that resting rate up to the activity. Dividing by 200 converts oxygen consumption into kilocalories, because burning one litre of oxygen releases roughly 5 kcal (3.5 ml/kg/min × weight ÷ 1000 × 5 = the same as ÷ 200).
What MET value does standing have?
According to the 2011 Compendium of Physical Activities, the reference source for MET values, quiet standing — standing in a line or standing still — is coded at 1.3 MET. Standing is not a strenuous activity, so its MET sits just above the 1.0 baseline of complete rest. Standing becomes more demanding as you add movement:
- 1.3 MET — standing quietly, standing in a queue.
- 1.8 MET — standing while fidgeting, shifting weight, or doing very light tasks.
- 2.3 MET — standing with light work such as filing, cooking, or talking on the phone.
- 3.0 MET — standing with moderate effort such as assembling, packing, or light manual work.
Why weight and time matter
Calorie burn is directly proportional to body weight: a heavier body consumes more oxygen to hold the same posture, so a 90 kg person burns about 29% more than a 70 kg person doing the identical activity. It is also directly proportional to duration — double the minutes, double the calories. Because both relationships are linear, the calculator simply multiplies weight, time, and the MET value together.
Reference points
For a 70 kg (154 lb) adult standing quietly at 1.3 MET, the calculator gives about 1.59 kcal per minute, roughly 96 kcal per hour. Over an 8-hour workday that is about 764 kcal spent simply standing. Switching that same person to a light-task standing intensity (2.3 MET) raises the rate to about 2.82 kcal/min, or roughly 169 kcal/hour.