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Dog Food Calculator

Work out how many calories and cups of food your dog needs per day from weight, age, activity and neuter status, using the vet RER × factor method.

Dog weight (lb)

Life stage / activity

Food calories (kcal per cup (on the bag))

Meals per day

How to use it

Enter weight in pounds (use target weight for weight loss).
Pick the life stage.
Find "kcal/cup" in the calorie statement on the bag.

How it works

Resting energy requirement RER = 70 × (weight in kg)^0.75. Daily need = RER × a life-stage factor (1.6 neutered adult, 1.8 intact, 2-3 puppies, 1.0 for weight loss). Divide by the food's kcal per cup. Treats should stay under about 10% of daily calories.

FAQ

How many cups should a 50 lb dog eat?

About 1,150 kcal a day for a neutered adult - roughly 3 cups of a 380 kcal/cup food.

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