Enter your cat’s current weight. Small entries are fine (decimals allowed).
Why this matters: Spayed/neutered cats usually need about 20% to 30% fewer calories to maintain a healthy weight due to changes in sex hormones.
Choose the option that best fits your cat’s routine: mostly indoor/inactive, or moderately active.
Split the daily total into even meals.
Estimated Daily Calories
—kcal/day
Typical range: — kcal/day Treats ≤10%: up to — kcal/day

This step helps you find the target number of calories your pet should eat from meals only — treats aren’t included here. The total is based on their ideal weight, activity level, and other factors like age or whether they’ve been spayed or neutered.

If your pet needs to lose weight, this number will need to be adjusted down. Always check with your veterinarian before making diet or activity changes, especially for weight loss.

Once you know this number, you can compare it to how many calories your pet is actually eating, then add treats on top to see the full daily total. Use the calculator below to get started.

Senior note: Some cats over about 12 years may have increased energy and protein needs to maintain a healthy body condition.
Safety note: Avoid rapid or severe calorie restriction in cats. Sudden food reduction or inappetence can increase the risk of a life-threatening liver condition known as hepatic lipidosis. Work closely with your veterinarian to set safe calorie and feeding goals.
Important: This tool is provided by the Association for Pet Obesity Prevention (APOP) for educational purposes only and should not be used as a substitute for veterinary care. Energy needs vary depending on your pet’s health status, body condition, age, and activity level. Always review any diet or weight plan with your veterinary team, and do not begin a weight-loss program, restrict calories, or start an exercise routine without your veterinarian’s guidance.