Calorie Calculator


Calorie calculators estimate the amount of energy that your body burns each day1. This is your total daily caloric needs, also known as your total daily energy expenditure, TDEE.

Your daily caloric needs are calculated by adding your basal metabolic rate (BMR or REE) and non-resting energy expenditure (NREE).

BMR is the number of calories your body needs to function while completely resting.

NREE includes all the energy you need to move about, talking, exercise, eat, digest food, basically all non-resting energy.

BMR = Basal Metabolic Rate. The amount of energy that your body needs to function while completely resting for a day while fasting.
NREE = Non Resting Enegry Expediture. A metabolic value representing thermic effect of food, exercise activity thermogenesis, and non-exercise activity thermogenesis.

Total Daily Caloric Needs = BMR + NREE.


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Extra Reading

  • Kansas State Unitversity. "Physical Activity and Controlling Weight," (accessed March 30, 2019),
  • Frankenfield D, Roth-Yousey L, Compher C. Comparison of predictive equations for resting metabolic rate in healthy nonobese and obese adults: a systematic review. J Am Diet Assoc. 2005;105:775"789. doi: 10.1016/j.jada.2005.02.005. [PubMed]