Dog Food Calorie Calculator
Your dog's estimated Resting Energy Requirement (RER) is: kcal/day
Your dog's Target Daily Intake (MER) is: kcal/day
Based on your food's density, feed approximately: cups per day
How to Calculate Your Dog's Caloric Needs
Understanding how much to feed your dog is critical for preventing obesity, which is the leading cause of health issues in domestic pets. This calculator uses the standard veterinary formula for Resting Energy Requirement (RER) and applies a multiplier for Maintenance Energy Requirement (MER).
The Science Behind the Math
The calculation starts with the RER, which is the energy needed for basic body functions (breathing, heart function, digestion) while at rest. The formula used is:
RER = 70 × (Body Weight in kg)^0.75
Once the RER is established, we apply a factor based on the dog's life stage. For example, a neutered adult dog typically requires 1.6 times their RER, while a growing puppy may require up to 3 times their RER to support bone and tissue development.
Realistic Examples
A 30lb (13.6kg) neutered Beagle.
RER: 70 * (13.6)^0.75 = 496 kcal.
Multiplier: 1.6x.
Total: 794 Calories/Day
A 10lb (4.5kg) Golden Retriever puppy (3 months old).
RER: 70 * (4.5)^0.75 = 216 kcal.
Multiplier: 3.0x.
Total: 648 Calories/Day
Why Activity Level Matters
Just like humans, a dog's metabolic rate is heavily influenced by movement. A working farm dog might burn double the calories of a couch-dwelling Bulldog of the same weight. If you notice your dog gaining weight on the calculated amount, reduce the intake by 10%. If they are losing weight and shouldn't be, increase it by 10%.
Monitoring Body Condition Score (BCS)
Calculators provide a starting point, but they aren't perfect. You should regularly perform a "rib check." You should be able to feel your dog's ribs easily under a thin layer of fat, but they shouldn't be sticking out. From above, your dog should have a visible waistline.