How much should I feed a 50kg dog?

Resting energy for a 50kg dog is around 1,316 kcal, and a typical neutered adult at normal activity needs close to 1.6 times that, about 2,105 kcal a day. At 350 to 400 kcal per 100g of dry food, that comes to roughly 545 to 570g.

Over a month, that is 16 to 17kg of food, which is worth factoring into how you buy and store food, since large bags left open too long can lose freshness before they are finished.

Deep chested giant breeds are generally fed two or more smaller meals a day rather than one large one, both for comfort and as part of general good practice for large, barrel chested dogs.

A common split at this weight is two meals of around 270 to 285g each.

Keep large bags sealed and stored somewhere cool and dry, and use an airtight container if you decant food, since freshness affects both palatability and calorie consistency over the weeks it takes to finish a big bag.

Weigh your dog monthly, and if your scale does not handle this weight well, ask your vet clinic if you can use theirs between checkups. Portioning a week's worth of meals into labeled containers in advance also makes daily feeding faster and reduces the chance of an inconsistent scoop creeping into the routine over time.