How many grams should your dog eat per day? Calculate it from weight, life stage and your food’s calories.
Vets calculate a dog’s Resting Energy Requirement (RER) as 70 × (weight in kg)0.75, then multiply by a life-stage factor: growing puppies need 2–3× RER, a typical neutered adult about 1.6×, and dogs on a diet about 1.2×. Dividing by your food’s calorie density gives the daily grams.
Feeding guides on the bag are averages — your dog’s ideal portion depends on body condition. You should be able to feel (not see) the ribs and see a waist from above. Check which extras are safe in our dog food safety guide.
This tool gives general estimates only and is not veterinary advice. Always consult your vet about your individual pet. Full disclaimer.