Most adult cats need between 200 and 300 calories per day, though the exact number depends on weight, activity level, and whether they’ve been spayed or neutered. A typical 10-pound indoor cat falls right in the middle of that range at around 240 to 270 calories daily.
Daily Calorie Needs by Weight
The World Small Animal Veterinary Association (WSAVA) publishes calorie guidelines for healthy adult cats at an ideal body weight. These ranges account for natural variation between individual cats:
- 5.5 lb (2.5 kg): 180–190 calories/day
- 6.6 lb (3.0 kg): 200–210 calories/day
- 8.8 lb (4.0 kg): 225–250 calories/day
- 11 lb (5.0 kg): 250–290 calories/day
- 13.2 lb (6.0 kg): 265–330 calories/day
- 15.4 lb (7.0 kg): 280–370 calories/day
Notice how the ranges widen as weight increases. That’s because a lean, active 15-pound cat and a sedentary, overweight 15-pound cat have very different metabolic needs. These numbers are starting points, not fixed rules. Your cat’s ideal intake depends on several other factors.
What Changes Your Cat’s Calorie Needs
The biggest variable is whether your cat has been spayed or neutered. Intact adult cats burn more energy and need roughly 1.4 times their resting energy requirement. Neutered cats need less, around 1.2 times their resting requirement. That difference alone can mean 40 to 60 fewer calories per day for a fixed cat compared to an intact one of the same size.
Indoor versus outdoor life makes a dramatic difference too. A rough rule of thumb: indoor cats need about 20 calories per pound of body weight, while outdoor-only cats need closer to 35 calories per pound. Outdoor cats burn significantly more energy regulating body temperature, patrolling territory, and hunting. A 10-pound outdoor cat might need 350 calories a day, while the same cat living indoors would need only 200.
Cats that are sedentary or prone to weight gain often do fine at the lowest end of the calorie range, sometimes at just 1.0 times their resting energy requirement. This is common for older indoor cats who spend most of their day sleeping.
How the Math Works
Veterinary nutritionists calculate a cat’s baseline calorie needs using a formula tied to body weight in kilograms. The standard equation from the National Research Council is: 100 multiplied by body weight in kilograms raised to the power of 0.67. That gives you the lean adult maintenance figure. For cats prone to obesity, a slightly different formula is used: 130 multiplied by body weight in kilograms raised to the power of 0.4.
You don’t need to do this math yourself. The calorie chart above is derived from these formulas, and most veterinarians can give you a target number based on your cat’s current weight and body condition score. But understanding the formula explains why calorie needs don’t scale in a straight line. A cat that weighs twice as much as another doesn’t need twice the calories.
Calories During Pregnancy and Nursing
Pregnant and nursing cats need substantially more food. By late pregnancy, a queen should be eating 25% to 50% more calories than her normal maintenance amount. So a cat that usually eats 250 calories per day would need 310 to 375 calories in the final weeks before delivery.
Lactation is even more demanding. It’s the single most energy-intensive life stage for a cat, requiring more calories than even growth during kittenhood. Nursing mothers feeding a large litter may need two to three times their normal calorie intake. Free-choice feeding with a calorie-dense kitten food is the typical approach during this period, since it’s nearly impossible for a nursing queen to overeat.
Calorie Targets for Weight Loss
If your cat is overweight, the goal isn’t to slash calories dramatically. Cats that lose weight too quickly risk developing hepatic lipidosis, a serious and potentially fatal liver condition caused by rapid fat mobilization. The Cornell Feline Health Center recommends feeding about 70% of the calories needed to maintain the cat’s ideal weight (not its current weight). That’s an important distinction.
For example, if your cat weighs 14 pounds but should weigh 11 pounds, you’d calculate the maintenance calories for an 11-pound cat (roughly 250 to 290 calories) and feed 70% of that, landing around 175 to 200 calories per day. Weight loss in cats should be slow and steady, typically no more than 1% to 2% of body weight per week. A cat that needs to lose 3 pounds might take several months to reach its target safely.
Translating Calories to Actual Food
Knowing your cat needs 250 calories is only useful if you know what that looks like in a food bowl. Every cat food lists calorie content on the packaging, usually expressed as kilocalories per cup (for dry food) or kilocalories per can (for wet food). A typical dry food runs 300 to 500 calories per cup, while a standard 5.5-ounce can of wet food contains 150 to 250 calories.
This means a 10-pound cat eating a 400-calorie-per-cup dry food needs roughly two-thirds of a cup per day. The same cat eating 180-calorie cans of wet food would need about one and a half cans. Treats count too. A single commercial cat treat is usually 2 to 5 calories, but they add up quickly if you’re generous with them. Keeping treats under 10% of total daily calories helps prevent slow, unnoticed weight gain.
Measuring food with an actual measuring cup or kitchen scale, rather than eyeballing it, is the simplest change most cat owners can make. Even small daily overages of 10 to 20 extra calories compound over months into meaningful weight gain for an animal this small.