Mastiff Food Calculator
Daily calories by activity level
How much to feed a Mastiff depends on weight and how active they are. Enter your dog's real weight for a more precise number, or use the table below based on a typical adult of this breed.
| Activity level | Daily calories |
|---|---|
| Low activity (mostly indoors) | 2820 kcal/day |
| Moderate activity (daily walks) | 3760 kcal/day |
| High activity (very active/working) | 4700 kcal/day |
| Growing puppy | 5875 kcal/day |
Common questions
How many calories does an adult Mastiff need per day?
For an average adult Mastiff around 76 kg with a moderate activity level (typical daily walks), that's roughly 3760 kcal per day. Less active dogs need closer to 2820 kcal, very active or working dogs closer to 4700 kcal. Every dog's food packaging shows kcal per 100g, so you can work out the right daily amount from there.
How much should I feed my Mastiff puppy?
Growing puppies need significantly more calories relative to their current weight than adults, roughly 5875 kcal/day at an adult-equivalent weight of 76 kg, split across 3–4 meals a day rather than the usual 2. Follow your specific puppy food's feeding guide as they grow, since a puppy's needs change quickly.
Is this the same as what a vet would recommend?
This uses the standard RER (Resting Energy Requirement) formula vets use as a starting point, but every dog is an individual - body condition, spay/neuter status, and specific food all affect the right amount. Use this as a starting estimate and adjust based on your dog's actual body condition, or ask your vet.
Track feeding and everything else
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