Free dog and cat food calculator — know exactly how much to feed
Tell Us About Your Pet
Feeding Guide for Your Pet
Daily Calories Needed
Dry Food Per Day (approx.)
Meals Per Day (recommended)
Recommended For Your Pet
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How PetCalc Works
PetCalc uses the Resting Energy Requirement (RER) formula used by veterinary nutritionists: 70 × (body weight in kg)^0.75. This is then multiplied by a life-stage and activity factor to determine your pet's daily caloric needs. Dry food estimates assume approximately 350 calories per cup — always check your specific food's label, as this varies by brand.