Calories Burned Calculator
Calculate caloric expenditure across duration, body weight, and exercise intensity
Total energy expenditure for 45 minutes at 5 METs
Mathematical Formula & Scientific Methodology
Formula: Compendium of Physical Activities Equation
Calories = MET × Weight (kg) × [Duration (min) / 60]Standard epidemiological formula where 1 MET represents the oxygen consumption of quiet sitting (3.5 ml O2/kg/min).
Model Assumptions
- Continuous exercise without long idle recovery periods
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| MET | Metabolic Equivalent of Task | ratio |
| Weight | Body mass | kg |
| Duration | Exercise duration | minutes |
Scientific Limitations
- Cardiovascular fitness affects economy; elite athletes burn slightly fewer calories at submaximal paces due to efficiency
Peer-Reviewed Scientific Citations
2011 Compendium of Physical Activities: a second update of codes and MET intensities (2011)
Ainsworth BE, Haskell WL, Herrmann SD, et al. (2011) — Medicine & Science in Sports & Exercise, 43(8), 1575-1581
Key Finding: Defines Metabolic Equivalent of Task (1 MET = 3.5 ml O2/kg/min or 1 kcal/kg/hour) across hundreds of standardized physical activities.
Frequently Asked Questions
Related Calculators & Next Steps
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