How the estimate works
Vets usually start from your dog’s resting energy requirement — the calories needed to simply exist at rest — and multiply by a factor for life stage and activity. Puppies and working dogs need far more per kilo than a calm, neutered adult, and a dog losing weight needs less. This calculator uses that standard approach to give a sensible starting number.
This is a starting estimate, not a prescription. Health conditions, breed, and individual metabolism all matter — confirm the right amount with your vet, especially for puppies, seniors, or dogs with medical needs.
Turning calories into cups
Every food has a different calorie density, so cups are only meaningful once you know your food’s calories per cup (it is printed on the bag, often as “kcal/cup”). Divide your dog’s daily calories by that number, then split the result across their meals. When in doubt, weigh portions with a kitchen scale for consistency.
Worried about a specific food or treat? Check it first with our dog safety checker.
Frequently asked questions
How many calories does my dog need per day?
It depends on weight, life stage, and activity. A common veterinary estimate starts from resting energy needs (about 70 × bodyweight in kg, to the power 0.75) and multiplies by an activity factor — for example around 1.6 for a neutered adult, more for puppies and working dogs, less for weight loss.
How much should I feed my dog in cups?
Cups vary hugely between foods, so there is no universal answer. Take your dog’s estimated daily calories and divide by the calories-per-cup printed on your food’s bag, then split that across their meals.
How do I know if I’m feeding the right amount?
Use body condition, not just the bowl. You should be able to feel your dog’s ribs easily without pressing hard, and see a visible waist from above. If your dog is gaining or losing weight, adjust the amount and check with your vet.