Pet Food Portion Calculator

Frequently Asked Questions

How much should I feed my dog?

It depends on weight, age, activity level, and body condition. As a general rule, adult dogs need about 25-30 calories per pound of body weight daily. Use our calculator above for a personalized estimate, then adjust based on your dog's individual response.

How much should I feed my cat?

Adult cats typically need 20-30 calories per pound of body weight per day. Indoor cats often need less (around 20 calories/lb) while active outdoor cats may need more (up to 35 calories/lb). Kittens need significantly more to support growth.

Should I feed my pet once or twice a day?

Adult dogs and cats typically do best with 2 meals per day, spaced 8-12 hours apart. Puppies and kittens under 6 months should eat 3-4 times daily. Some dogs prone to bloat benefit from 3 smaller meals. Grazing (free-feeding) is not recommended as it makes portion control difficult.

How do I know if I'm feeding the right amount?

Monitor your pet's body condition. You should be able to feel their ribs easily without seeing them prominently. They should have a visible waist when viewed from above. Weigh your pet monthly. If they're gaining or losing weight unintentionally, adjust portions by 10-15% and reassess after 2-3 weeks.

Do calories differ between pet food brands?

Yes, significantly. Dry dog food ranges from 300-500 calories per cup depending on formula. High-protein, grain-free foods tend to be more calorie-dense. Always check the guaranteed analysis and feeding guidelines on your specific food package.

How do I transition between food amounts?

Make changes gradually over 7-10 days. If increasing portions, add 10-15% more food every few days. If decreasing for weight loss, reduce by 10-15% and monitor for 2 weeks before adjusting further. Sudden changes can cause digestive upset.

Should puppies and kittens eat more?

Yes. Growing puppies and kittens need 2-3 times more calories per pound than adults. They should eat puppy/kitten-specific food formulated for growth. Feed 3-4 small meals daily until 6 months old, then transition to 2 meals. Switch to adult food around 1 year (varies by breed size in dogs).

Do senior pets need less food?

Generally yes. Senior pets (7+ years for most dogs, 10+ for cats) have slower metabolisms and are often less active. They typically need 20-30% fewer calories than in their prime adult years. However, some seniors lose weight and may need more calories. Monitor body condition closely.

How do treats affect daily portions?

Treats should make up no more than 10% of daily calories. If your dog needs 800 calories/day, limit treats to 80 calories. Reduce meal portions slightly on days with more treats. Many training treats are 3-5 calories each, while large dental chews can be 100+ calories.

What if my pet is always hungry?

Some pets act hungry even when getting adequate calories. Ensure they're at a healthy weight first. Strategies include: splitting food into more frequent smaller meals, adding low-calorie vegetables (green beans, pumpkin), switching to higher-fiber food, increasing exercise, and using slow-feeder bowls. Rule out medical issues like parasites or thyroid problems with your vet.

Should I adjust for spayed/neutered pets?

Yes. Spayed and neutered pets have 20-30% lower calorie needs due to hormonal changes. If your pet was spayed/neutered as an adult, reduce portions by about 25% and monitor weight closely for the first few months after surgery.

Are these calculations accurate for all breeds?

The RER formula is accurate for most dogs and cats, but some breeds have unique needs. Giant breed puppies need careful feeding to prevent growth disorders. Sighthounds (greyhounds, whippets) often need more calories than the formula suggests. Brachycephalic breeds (bulldogs, pugs) may need less. When in doubt, consult your veterinarian.