Caloric Needs (RER/MER) Calculator
Clinical judgment required. This calculator is a decision-support tool, not a substitute for veterinary consultation.
Caloric Needs (RER/MER) CalculatorCanineFeline
Calculate resting energy requirement (RER) and maintenance energy requirement (MER) for dogs and cats. Computes daily caloric needs (kcal/day) and water intake (mL/day) based on body weight and life stage using the allometric formula RER = 70 × BW^0.75. Supports neutered/intact adults, puppies, kittens, senior pets, working dogs, pregnant and lactating animals, and weight loss patients. Used for nutritional planning, feeding guidelines, diet formulation, how much to feed, calorie counting, and energy requirements in veterinary patients.
RER (Resting)
—kcal/day
MER (Maintenance)
—kcal/day
Water Intake
—mL/day