How to use this calculator
Enter your cat's weight in pounds, then select their life stage (kitten, adult, or senior), activity level, and body condition. The calculator uses the Resting Energy Requirement (RER) formula to estimate daily calorie needs, then applies a multiplier based on your cat's profile.
Results show how much dry food, wet food, or a combination you should feed each day, along with a recommended feeding schedule and estimated monthly cost.
Indoor vs. outdoor cat feeding
Indoor cats are generally less active than outdoor cats, which means they burn fewer calories throughout the day. An indoor cat that spends most of its time napping and lounging may need only 20 calories per pound of body weight, while an active outdoor cat could need 35 or more.
If your cat has recently transitioned from outdoor to indoor life (or vice versa), adjust their food intake gradually over a few weeks. Monitor their weight monthly and adjust portions as needed to maintain a healthy body condition.
Wet vs. dry food comparison
| Factor | Dry food | Wet food |
|---|---|---|
| Moisture content | ~10% | ~75-80% (better for hydration) |
| Calorie density | ~300 cal/cup (higher) | ~180 cal/can (lower) |
| Cost | More affordable per calorie | More expensive per calorie |
| Convenience | Easy to store, measure, and leave out | Must be refrigerated after opening |
| Dental health | May help reduce tartar buildup | No dental benefit |
| Palatability | Good, but less aromatic | Highly palatable for picky eaters |
Frequently asked questions
How many calories does a cat need per day?
A typical 10-pound adult indoor cat needs about 200-250 calories per day. Kittens need significantly more calories per pound of body weight to support rapid growth, while senior and overweight cats typically need fewer calories.
Should I feed my cat wet food or dry food?
Both can be part of a healthy diet. Wet food provides more moisture (important for urinary tract health) and is typically lower in carbohydrates. Dry food is more convenient and affordable. Many veterinarians recommend a combination of both for the best of each.
How often should I feed my cat?
Adult cats do best with 2 meals per day, usually morning and evening. Kittens under 6 months should eat 3-4 times daily due to higher energy needs and smaller stomachs. Avoid free-feeding dry food if your cat tends to overeat.
How do I know if my cat is overweight?
A healthy-weight cat has a visible waist when viewed from above, and you should be able to feel (but not see) their ribs easily. If your cat has a round belly with no waist definition, or you can't feel their ribs, they may be overweight. Ask your veterinarian for a body condition score assessment.