Question 1

What is a MET value?

Accepted Answer

MET stands for Metabolic Equivalent of Task. A MET of 1.0 is your resting metabolic rate (sitting quietly). An activity with a MET of 8.0 means your body burns 8 times more calories than at rest. The formula is: Calories = MET × Weight(kg) × Duration(hours).

Question 2

How accurate are these estimates?

Accepted Answer

MET-based calculations are accurate within 10-20% for most people doing steady-state exercise. They are based on the Compendium of Physical Activities, the definitive scientific database of MET values used in exercise research worldwide. Individual factors like fitness level, body composition, and workout intensity can cause variation.

Question 3

Why does body weight affect calories burned?

Accepted Answer

Heavier individuals burn more calories performing the same activity because they require more energy to move a larger mass against gravity and maintain movement. This is why calories are calculated per kilogram of body weight in the MET formula.

Question 4

What is the difference between net and gross calories?

Accepted Answer

Gross calories represent the total energy expenditure during an activity, including the calories you would have burned just by existing (your resting metabolic rate). Net calories represent only the extra calories burned because of the exercise. Most fitness trackers report gross calories, which is what this calculator provides.

Question 5

Can I use this to "earn" more food?

Accepted Answer

While it's tempting to think "I burned 300 calories, so I can eat a slice of pizza," this mindset can lead to a dysfunctional relationship with food. It's notoriously easy to overestimate calories burned and underestimate calories consumed. Use this tool for awareness and macro planning, not as a transaction system for junk food.

Activity Calorie Burner

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