After putting in the values requested and clicking the
calculate button, this tool will compute the baseline (or basal)
energy usage (expenditure) for males. This number will be in
kilocalories (kcal) per day. 1 kcal = 1,000 calories = 1 Calorie
(Note the capitalization). A Calorie is better known as a dietary
Calorie. So, 1 kcal equals 1 dietary Calorie.
calorie (cal): A unit of energy often used when measuring
the energy content of food. The amount of energy needed to raise the
temperature of one gram of water one degree Celsius.
dietary (food) calorie (Calorie or Cal or kcal): A unit of
energy equal to one kilocalorie. The dietary calorie is often used
when measuring the energy content of food.
kilocalorie (kcal or Calorie or Cal): A unit of energy equal
to 1000 calories. A kilocalorie is equal to 1 Calorie (dietary calorie).
The amount of energy needed to raise the temperature of one kilogram of
water one degree Celsius.
Gomella LG ed. Clinician's Pocket Reference. 6th ed. Norwalk, Conn:
Appleton & Lange; 1989:136.