Pet Food Portion & Daily Calorie Calculator
Enter your pet's weight, age, and activity level to get their daily calorie needs (RER × MER) and the grams of their specific food to feed per day. Nothing uploaded.
Pet Details
Daily Feeding
These are estimates based on average metabolic rates. Monitor body condition and adjust amounts if the pet gains or loses weight. Consult a vet for medical conditions.
Learn more: pet nutrition and daily calorie requirements
How body weight and activity level determine daily calories
Daily caloric need depends on weight and activity level. A 20kg moderately active dog needs 800-1000 kcal/day; sedentary 20kg dog needs roughly 700 kcal/day. REE formula adjusted by activity multiplier: 1.2 sedentary, 1.5 moderate, 1.8 very active. Senior or neutered pets need less; puppies and pregnant females need more.
Converting caloric needs to food portion size
Pet food labels list calories per cup or per 100g. If your dog needs 900 kcal/day and food has 400 kcal/cup: 900 / 400 = 2.25 cups. Some foods are denser (500+ kcal/cup), so portions vary. The calculator handles this automatically - enter weight, activity level, and food brand for daily portion.
Why weight and age matter more than breed
A 25kg mixed breed might need different portions than a 25kg purebred due to metabolism. The calculator focuses on weight and age (puppies, adults, seniors metabolize differently). Individual pets vary - monitor body condition and adjust if weight changes despite correct portions.
FAQ
How often should I feed my dog?
Adult dogs typically eat once or twice daily. Puppies need 3-4 meals. Senior dogs can eat once daily but twice is easier on digestion. The calculator shows daily amount; divide by meals as you prefer.
Should I adjust portions for training or exercise?
Yes. Dogs with high activity levels need 10-20% more calories. Sedentary or neutered dogs may need 10-15% less. Monitor your pet's body condition and adjust accordingly.
What if my pet is overweight?
Reduce portions by 10-20% and increase exercise. Weight loss should be gradual - about 1-2% of body weight per week. Consult a vet before making major dietary changes.