Cat Food Calculator
Calculate daily food portions for your cat in wet food ounces and dry food cups.
This tool is for informational and educational purposes only. It is not a substitute for professional financial, medical, legal, or engineering advice. See Terms of Service.
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Enter your cat's weight and life stage to calculate daily calorie needs. The calculator shows you the equivalent in ounces of wet food and cups of dry food so you can use whichever format you feed.
- Enter weight. Use your cat's current weight. If your cat is overweight, use the ideal target weight rather than actual weight when calculating a weight-loss diet.
- Select life stage. Kittens need significantly more calories per pound to support growth. Indoor cats have lower energy needs than active outdoor cats. Senior cats have slightly reduced needs due to lower activity.
- Read wet food and dry food amounts. These are calculated from the daily calorie total using standard calorie densities (30 kcal/oz for wet food, 350 kcal/cup for dry). Check your specific food's label for the exact calorie count and adjust accordingly.
About the Cat Food Calculator
This calculator uses the same resting energy requirement formula used for dogs: 70 × weight(kg)^0.75. For cats, the life stage multipliers differ: indoor adults use 1.2x, active cats use 1.4x, kittens use 2.5x, and senior cats use 1.1x.
Cats are obligate carnivores with unique protein and fat requirements. The calorie numbers here reflect total energy needs; the nutrient profile of your food is equally important. Wet food has a high moisture content (75-80%), which supports urinary tract health. Many vets recommend a combination of wet and dry food, or wet food as the primary diet especially for cats prone to urinary issues or kidney disease.
Frequently Asked Questions
How much wet food should I feed my 10-pound cat per day?
A typical 10-pound indoor adult cat needs approximately 200-230 calories per day. At 30 calories per ounce for average wet food, that is roughly 7-8 oz of wet food per day, typically one 3-oz can in the morning and one in the evening plus a small additional portion. Check your specific food's calorie content because it varies significantly between brands. High-protein, low-carb wet foods can range from 25 to 40 calories per ounce.
Is wet food or dry food better for cats?
Most veterinary nutritionists favor wet food as the primary diet for cats because it provides the moisture that cats would normally get from prey. Cats evolved in arid environments and have a low thirst drive, so they may not drink enough water to compensate for a dry-food-only diet. This can contribute to urinary tract disease, kidney disease, and obesity. Dry food is convenient and can support dental health to a minor degree. Many owners feed a combination: wet food for moisture and nutrition, with a small amount of dry food for variety and dental benefit.
How many times a day should I feed my cat?
Adult cats do well with two meals per day, spaced roughly 12 hours apart. Some owners use automatic feeders set for 3-4 smaller portions, which more closely mimics the frequency a cat would eat small prey in the wild. Free-feeding (leaving dry food out all day) is convenient but makes it difficult to monitor intake and is linked to obesity. Kittens need 3-4 meals per day until about 6 months of age because they need consistent fuel for growth.
Why is my cat always hungry even though I'm feeding the recommended amount?
Cats that seem persistently hungry despite adequate feeding may be experiencing hunger for several reasons. If you are feeding dry food, the low moisture content means cats eat a smaller physical volume. Switching to wet food often reduces begging because the stomach volume is more satisfying. Some cats beg out of boredom rather than true hunger. Puzzle feeders and food-dispensing toys can slow eating and provide mental stimulation. Medical causes like hyperthyroidism, diabetes, and intestinal parasites can also cause excessive hunger and should be ruled out by a vet if the behavior is new or worsening.