Enter your cat's weight and life stage. Add the calories from the label to see cans or cups a day.
Cat food calculator
Weight and life stage.
Daily calories
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RER = 70 × kg^0.75, times the life-stage factor from the Pet Nutrition Alliance. Every cat is different: weigh yours every few weeks and adjust with your vet. Weight-loss plans should be set by your vet.
How it works
Resting energy = 70 × weight in kg^0.75, multiplied by a life-stage factor from the Pet Nutrition Alliance: 1.2 for a neutered adult, 1.4 for an intact adult, 1.0 for an inactive cat, 0.8 to 1.0 for weight loss, and 2 to 3 for a growing kitten. Treats get 10% of the total.
Mixing wet and dry food? Work out the total calories, then split them between the two using each label.
Source: Pet Nutrition Alliance, "Calculating Calories Based on Pet Needs". See also how much to feed a cat.