Your Basal Metabolic Rate is simply the amount of energy you expend daily at rest. As the rate is calculated at rest it can be seen to be the minimum amount of energy required to keep all of your vital organs and systems functioning. Typically 70% of human energy expenditure is due to basal processes within the organs of the body whilst the other 20% comes from physical activity and exercise with the other 10% coming from thermogenesis (keeping warm). Surprisingly the organ with the highest energy expenditure is the liver (27%) and not the brain (19%). This basal metabolic rate calculator will calculate your basal rate for you.
  Metric   Imperial  
Height: cm   Height:
Weight: kg   Weight: lbs
Age: years   Age: years
BMR Rate: kcal/per day   BMR Rate: kcal/per day