Dog Calorie Calculator
Calculate your dog's exact daily calorie needs based on weight, breed, activity level, and life stage. Get a personalized feeding plan in seconds.
Based on the NRC's Resting Energy Requirement (RER) formula
How the Calculation Works
Calculate RER
We calculate your dog's Resting Energy Requirement using the veterinary formula: 70 × (weight in kg)^0.75
Apply Multipliers
Activity level (1.2x–2.0x), life stage, spay/neuter status, and weight goal are factored in for accuracy.
Personalized Plan
Get your dog's daily calories, macro breakdown, meal schedule, and breed-specific nutrition tips.
Sedentary Dogs
RER × 1.2–1.4
Mostly resting, short walks
Active Dogs
RER × 1.5–1.8
Regular exercise, play sessions
Working Dogs
RER × 2.0–5.0
Sport, herding, service work
Frequently Asked Questions
How many calories does my dog need per day?
Calorie needs depend on weight, age, and activity. A typical formula is RER (Resting Energy Requirement) = 70 × (body weight in kg)^0.75, then multiplied by an activity factor (1.2-2.0). Active dogs need more calories than sedentary ones.
Should I reduce calories for overweight dogs?
Yes, reduce calories by 20-30% for weight loss. A gradual approach is best - aim for 1-2% body weight loss per week. Consult your vet for a proper weight loss plan.
Do puppies need more calories than adult dogs?
Yes, puppies need 2-3 times more calories per pound than adults due to rapid growth. This requirement decreases as they mature, typically around 12-18 months for most breeds.
How does activity level affect calorie needs?
Highly active dogs (working, sporting) may need 1.5-2x more calories than sedentary dogs. Moderately active dogs need about 1.3-1.5x the base requirement.
Should senior dogs eat fewer calories?
Generally yes, senior dogs are less active and have slower metabolisms. Reduce calories by 10-20% for seniors, but ensure adequate protein for muscle maintenance.
How do I know if I'm feeding enough?
Monitor your dog's body condition score. You should feel ribs easily but not see them. Adjust portions based on weight changes every 2-4 weeks.
Does spaying or neutering affect calorie needs?
Yes, spayed and neutered dogs typically need 5-10% fewer calories because their metabolism slows slightly. Our calculator accounts for this when you select the spayed/neutered option.
How accurate is the RER formula?
The RER formula is the gold standard used by veterinary nutritionists worldwide. It provides a scientifically validated baseline that is then adjusted for individual factors like activity, age, and health status. However, every dog is unique - always monitor body condition and adjust accordingly.