Get precise daily feeding amounts based on veterinary formulas. Just enter your pet's details below.
We use the standard veterinary formula: RER = 70 × (weight in kg)0.75 (Resting Energy Requirement). This is then multiplied by a factor based on your pet's age, neuter status, activity level, and body condition to get the Daily Energy Requirement (DER). These formulas are published by the National Research Council (NRC) and American Academy of Veterinary Nutrition.
This calculator provides a scientific estimate based on established veterinary formulas. Individual needs can vary by ±20% depending on metabolism, breed, environment, and overall health. Always monitor your pet's weight and body condition, and adjust portions as needed. For medical concerns, consult your veterinarian.
Puppies (under 6 months): 3–4 meals daily. Puppies (6–12 months): 2–3 meals. Adult dogs: 2 meals daily is ideal (prevents bloat in large breeds). Kittens: 3–4 meals. Adult cats: 2–3 meals. Dividing daily portions into multiple meals helps with digestion and satiety.
Both have benefits. Dry food is convenient, affordable, and helps with dental health. Wet food has higher moisture content (important for cats and dogs prone to UTIs) and is often more palatable. Combination feeding gives you the best of both worlds. Our calculator supports all three options.
Select the appropriate body condition in our calculator. For weight loss, we apply a reduced multiplier to create a safe calorie deficit. For weight gain, we increase the multiplier. In either case, transition gradually and monitor your pet's weight weekly. Always involve your vet in significant dietary changes.
RER (Resting Energy Requirement) is the number of calories your pet needs at complete rest — essentially the energy for basic bodily functions like breathing and digestion. DER (Daily Energy Requirement) is RER adjusted for your pet's specific lifestyle factors (neuter status, activity, life stage). This is the actual number you should feed to.
Feeding your pet the right amount is one of the most important aspects of responsible pet ownership. Too little food can lead to malnutrition and weight loss, while too much can cause obesity, which is linked to diabetes, joint problems, and reduced lifespan. The correct daily feeding amount depends on several factors: your pet's current weight, age, breed size, and activity level. Puppies and kittens require more calories per pound than adult pets because they are growing rapidly. Senior pets often need fewer calories due to reduced activity and a slower metabolism. Our pet food calculator takes all these factors into account to provide a personalized daily feeding recommendation.
A consistent feeding schedule is essential for your pet's digestive health and behavior. Puppies under 6 months old should eat 3-4 times per day because their small stomachs cannot hold enough food to meet their energy needs in just one or two meals. Adult dogs (1-7 years depending on breed size) do well on two meals per day — morning and evening. Senior dogs may benefit from smaller, more frequent meals, especially if they have digestive sensitivities. Cats of all ages typically prefer multiple small meals throughout the day, mimicking their natural hunting pattern. A regular feeding schedule also helps with house training and makes it easier to monitor your pet's appetite, which is an important indicator of health.
Maintaining a healthy weight is one of the best things you can do for your pet's longevity. Studies show that pets kept at an ideal body weight live up to 2 years longer on average than overweight pets. If your pet needs to lose weight, reduce their daily food portion by 20-25% and increase exercise gradually. Use a kitchen scale to measure food portions precisely — measuring cups can be inaccurate by up to 30%. Our pet food calculator provides a baseline daily portion, but you should monitor your pet's body condition score (BCS) and adjust as needed. You should be able to feel your pet's ribs with a thin layer of fat, and they should have a visible waist when viewed from above.
Cats and dogs have different nutritional requirements that affect how you should feed them. Cats are obligate carnivores and require taurine, arachidonic acid, and higher protein levels in their diet. Dogs are omnivores and can thrive on a more varied diet. Cats also tend to be grazers — they prefer eating multiple small meals throughout the day and night. Dogs are more likely to eat a full meal when it's offered. These differences mean that a one-size-fits-all feeding approach doesn't work. Our pet food calculator tailors recommendations specifically for dogs or cats, taking their unique nutritional needs into account.
Both have advantages. Dry food is convenient, helps with dental health, and is more economical. Wet food provides hydration, is more palatable, and can be beneficial for pets with urinary tract issues or dental problems. Many owners feed a combination. Our calculator works with any food type — just use the calorie density listed on your food's packaging.
Transition gradually over 7-10 days. Start with 75% old food and 25% new food for 2-3 days, then 50/50 for 2-3 days, then 25/75 for 2-3 days, then 100% new food. A gradual transition helps prevent digestive upset and allows your pet to adjust to the new taste and texture.
Check using the body condition score (BCS) method. You should be able to feel your pet's ribs with a thin layer of fat — if you can't feel them, your pet may be overweight. Viewed from above, your pet should have a visible waist behind the ribs. Viewed from the side, the abdomen should tuck up. If your pet has no waist or a sagging belly, it may be time to adjust portions.
Absolutely. Active pets burn more calories and need more food to maintain their energy levels. A working dog or a highly active pet may need 30-50% more calories than a sedentary pet of the same weight. Conversely, a sedentary or senior pet needs fewer calories to prevent weight gain. Our pet food calculator adjusts portions based on activity level.
Treats are fine in moderation but should make up no more than 10% of your pet's daily calorie intake. Many owners forget to account for treats, which can lead to unintentional overfeeding. If you give treats regularly, reduce the main meal portion slightly to compensate. Healthy treat alternatives include small pieces of carrot, green beans, or apple (without seeds).