Cat Calorie Calculator
Use this cat calorie calculator to estimate how much to feed your cat each day. It turns weight, life stage, and body condition into a calorie target, then into cups of dry food and cans of wet food from the numbers on your label.
Feeding worksheet
Cat calorie & portion calculator
Enter your cat's details to get a daily calorie target, then add the numbers from your food label to turn that into cups and cans.
How this was worked out
Multipliers follow standard small-animal nutrition ranges. Individual needs vary by up to 25%, so treat this as a starting point: weigh your cat every two weeks and adjust the amount if the trend moves the wrong way. Confirm the plan with your vet if your cat has kidney disease, diabetes, hyperthyroidism, or is losing weight without a diet change.
How to use the cat calorie calculator
Enter current weight in pounds or kilograms, choose life stage, say whether your cat is spayed or neutered, and pick the closest body condition. Then copy kcal per cup and kcal per can from the food bag or can. The tool uses the standard resting energy formula (70 × body weight in kg0.75) and a multiplier for kittens, adults, seniors, weight loss, or weight gain.
What a healthy feeding amount looks like
Neutered adult cats often need about 1.2 × resting energy. Intact adults are closer to 1.4 ×. Kittens need more: about 3 × under four months and 2 × from four to twelve months. Overweight cats are usually started at 0.8 × resting energy so they lose about 0.5–1% of body weight per week.
Weigh your cat every two weeks on the same scale. If the trend is wrong, change the portion by a small amount rather than guessing from the bag chart alone.
Frequently asked questions
How many calories should my cat eat per day?
Most adult cats need about 1.2 times their resting energy requirement if they are spayed or neutered, and about 1.4 times if they are intact. The calculator works this out from weight, age, and body condition.
Should I feed wet food, dry food, or both?
Either can work if the daily calorie target is met. Enter kcal per cup and per can from the label to see dry-only, wet-only, and half-and-half portions.
Is this a substitute for veterinary advice?
No. Use it as a starting point and confirm the plan with your vet if your cat has kidney disease, diabetes, hyperthyroidism, or unexplained weight loss.