Is a pet calorie calculator exact?

No. It is a starting estimate. Individual pets can vary widely. Watch body condition over 2–3 weeks and ask your veterinarian before major feeding changes.

Can I convert calories into cups of food?

Yes. Enter the kcal per cup from your food bag. We divide the daily calorie target by that number to estimate cups per day.

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Dog & Cat Calorie Calculator

Q: How do you calculate dog or cat daily calories?

First calculate resting energy requirement: RER = 70 × (body weight in kg)^0.75. Then multiply by a maintenance factor for life stage and neuter status (for example about 1.6 for a typical neutered adult dog).

Enter weight and life stage — get a daily kcal starting point (RER × MER), optional cups from your food label, and a printable card.

Saved a pet? Open from My Pets to prefills weight and species.

Estimated daily target

Starting estimate only — not a veterinary prescription. Adjust with body condition and ask your vet before big changes.

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Free dog and cat daily calorie calculator

Bag charts assume an average pet. This free calculator uses the common veterinary nutrition approach: resting energy requirement (RER), then a maintenance factor for puppies, kittens, neutered adults, seniors, and activity.

How the formula works

Convert weight to kilograms.
RER = 70 × (kg)^0.75.
Daily target ≈ RER × life-stage factor (for example ~1.6 for a typical neutered adult dog, ~1.2 for a neutered adult cat).
Optional: divide by kcal per cup on your bag for an approximate cups-per-day figure.

Save weight on My Pets for next time, or set a checkup reminder. Curious about life stage gifts? Try the age calculator.

Pet calorie FAQ

How do you calculate dog or cat daily calories?

RER = 70 × (body weight in kg)^0.75, then multiply by a maintenance factor for life stage and neuter status.

Is this medically exact?

No. It is a planning estimate. Needs can vary by 20–50%. Use body condition and veterinary advice as the final check.

Can I get cups per day?

Yes — enter kcal per cup from the food label after you calculate.

What about weight loss?

Choose the weight-management stage for a lower starting factor. Obese pets should follow a plan with a veterinarian — do not crash-diet.