How Much Should I Feed My Cat? A Complete Guide by Age and Weight
Ask ten cat owners how much they feed their cat and you'll get ten different answers — most of them guesses. A handful of kibble here, half a can there, a little extra because they were acting hungry, slightly less because they looked a bit round last week.
This is one of the most common and consequential mistakes in cat ownership. Obesity now affects an estimated 60% of domestic cats in the United States, according to the Association for Pet Obesity Prevention — and in the vast majority of cases, it's caused by consistent, low-level overfeeding that neither the cat nor the owner notices until a vet flags it at a routine appointment.
Feeding your cat the right amount isn't complicated, but it does require knowing a few numbers. Here's exactly what you need to know, organized by age and weight, with practical guidance on both wet and dry food.
The Foundation: Calories, Not Cups
The single most important shift in how you think about cat feeding is moving from volume to calories. "Half a cup a day" is meaningless without knowing the calorie density of the specific food in that cup — and cat foods vary enormously. A premium high-protein dry food might contain 500 calories per cup. A standard grocery-store formula might contain 300. Feeding "half a cup" of each produces wildly different outcomes.
The starting point for any cat's daily intake is their caloric need, which is determined primarily by weight, age, activity level, and reproductive status. From there, you convert that calorie target into grams or cups using the calorie information on the food packaging (listed as kcal/cup for dry food, or kcal/can or kcal/kg for wet food).
As a general baseline: most adult cats need approximately 20 to 33 calories per pound of body weight per day, depending on activity level. A sedentary indoor cat sits at the lower end; an active outdoor cat or an intact (unspayed/unneutered) cat sits at the higher end.
Feeding Guide by Life Stage
Kittens (Under 12 Months): More, More Often
Kittens are in a phase of rapid growth that demands substantially more calories per pound than adult cats. Their metabolic rate is high, their stomach capacity is small, and they need frequent meals to sustain energy without risk of hypoglycemia.
General guidelines for kittens:
- Feeding frequency: 3 to 4 meals per day up to 6 months; 3 meals per day from 6 to 12 months
- Caloric need: Approximately 60 to 65 calories per pound of body weight per day for young kittens (8–16 weeks); tapering toward adult levels as they approach 12 months
- Food type: Always use food labeled specifically for kittens or "all life stages" — adult formulas don't provide adequate protein and fat density for growth
- Portion guidance: Most quality kitten foods provide feeding charts on the packaging by weight; follow these as a starting point and adjust based on body condition
At around 6 months, as growth slows, you can begin transitioning toward the adult feeding schedule. Most cats reach close to their adult weight by 10 to 12 months, at which point adult feeding guidelines apply.
Adult Cats (1 to 7 Years): Precision Matters Most
This is the life stage where overfeeding is most common and most consequential. Adult cats no longer need the caloric surplus of kittenhood, but many owners continue feeding kitten-sized portions out of habit.
Here are the vet-recommended daily calorie targets for adult cats at a healthy weight, based on activity level:
| Cat Weight | Sedentary / Indoor | Moderately Active | Active / Outdoor |
|---|---|---|---|
| 6 lbs (2.7 kg) | 120–150 kcal | 150–175 kcal | 175–210 kcal |
| 8 lbs (3.6 kg) | 160–200 kcal | 200–230 kcal | 230–265 kcal |
| 10 lbs (4.5 kg) | 200–250 kcal | 250–290 kcal | 290–330 kcal |
| 12 lbs (5.4 kg) | 240–300 kcal | 300–345 kcal | 345–395 kcal |
| 14 lbs (6.4 kg) | 280–350 kcal | 350–400 kcal | 400–460 kcal |
These figures are based on PetMD veterinary guidelines and APOP (Association for Pet Obesity Prevention) data. Individual needs can vary by up to 50% — consult your vet for a personalized target.
Spayed and neutered cats typically need about 20% fewer calories than intact cats at the same weight and activity level, because sterilization reduces metabolic rate. If your cat was recently spayed or neutered and you haven't adjusted their portions, this is likely when weight gain started.
Senior Cats (7+ Years): The Two-Track Problem
Senior cat nutrition is more nuanced than most owners realize, because aging cats actually split into two groups with opposite needs:
Cats aged 7 to 11 often have slowed metabolisms and reduced activity, meaning they need fewer calories than their middle-aged selves. Overfeeding in this phase is a leading cause of obesity-related joint disease and diabetes in older cats.
Cats aged 12 and above often experience the reverse problem: decreased digestive efficiency and muscle mass loss (sarcopenia) mean they may need more calories and higher-quality protein to maintain a healthy body condition, even if they appear to be eating normally. A senior cat who is losing weight despite adequate portions needs a vet assessment, not just a bigger bowl.
For most cats aged 7 to 11, reducing daily intake by 10 to 20% from their adult-phase target and switching to a senior formula with fewer calories and higher fiber is the appropriate adjustment. For cats 12 and above, prioritize high-protein, highly digestible food and monitor body condition closely at least every three months.
Dry Food vs. Wet Food: What the Numbers Look Like
The same calorie target produces very different portion sizes depending on food type, because wet and dry food have dramatically different calorie densities.
As a general reference:
- High-quality dry food: 300 to 500 kcal per cup (average approximately 380 kcal/cup)
- Standard wet food: 70 to 100 kcal per 3-oz (85g) can
To calculate how much to feed:
- Establish your cat's daily calorie target (from the table above, or from your vet)
- Find the calorie content on your specific food packaging (kcal/cup or kcal/can)
- Divide: daily target ÷ calories per serving = servings per day
Example: A sedentary 10-pound adult cat needs approximately 200 to 220 kcal/day. If you're feeding a dry food with 380 kcal/cup, that's approximately half a cup per day, split across two meals. If you're feeding a wet food with 85 kcal per 3-oz can, that's approximately 2.5 cans per day.
Many owners feeding a mix of wet and dry food forget to account for both in the daily total. Every calorie from every source — dry food, wet food, toppers, treats — counts toward the daily target. Treats alone can represent 10 to 20% of a small cat's daily calorie budget if you're not tracking them.
Feeding Frequency: How Often Should You Feed?
The research on meal frequency in cats is fairly consistent:
- Kittens under 6 months: 3 to 4 meals per day
- Adult cats: 2 meals per day, spaced approximately 12 hours apart, is the standard veterinary recommendation
- Senior cats: 2 to 3 smaller meals per day can be easier on digestion
Free feeding — leaving food available at all times — is associated with significantly higher rates of obesity in cats, particularly for dry food. Cats with constant food access tend to eat out of boredom and habit rather than hunger. If your cat is overweight and currently free-fed, transitioning to scheduled meals is often the single most effective intervention for weight management.
Consistency matters. Cats are highly routine-dependent, and irregular feeding times can increase stress and anxiety. Feeding at the same time each day regulates their hunger signals and reduces food-seeking behavior between meals.
How to Tell If You're Feeding the Right Amount
Calorie targets are starting points. The real feedback mechanism is your cat's body condition — specifically, whether they're maintaining a healthy weight over time. Two practical checks:
The rib test: Run your fingers along your cat's ribcage with light pressure. You should be able to feel individual ribs easily, but not see them. If you can't feel ribs without pressing firmly, your cat is likely overweight. If ribs are prominently visible or sharply felt without any pressure, they may be underweight.
The waist check: Looking down at your cat from above, there should be a visible narrowing behind the ribs — a slight hourglass shape. Looking from the side, there should be a slight upward tuck of the belly behind the ribs. A cat who looks like a rectangle from above, or whose belly hangs parallel to the floor from the side, is carrying excess weight.
Weigh your cat every four to six weeks and track the number. A gradual, consistent increase over several months is much easier to correct early than significant obesity caught at an annual vet visit.
The Most Common Feeding Mistakes
Based on veterinary data, these are the errors that account for the majority of cat weight problems:
- Feeding to current weight, not ideal weight. If your cat is already overweight, calculating their portions based on their current weight will maintain that excess weight, not reduce it. Feed to their target weight — which your vet can help determine.
- Not measuring. "About this much" with a coffee mug is not a measurement. Use an actual measuring cup, every time. Studies consistently show that owners who eyeball portions significantly underestimate how much they're giving.
- Ignoring treat calories. Most cat treats are calorie-dense. If treats are a regular part of your cat's day, they need to come out of the daily food allowance, not be added on top of it.
- Using the feeding guide on the packaging as gospel. Manufacturer feeding guides are averages and tend to run generous. They're a starting point, not a prescription.
- Not adjusting after spay/neuter. This is when many cats begin gaining weight, and it's entirely preventable with a 15 to 20% portion reduction.
When to Let Your Vet Set the Target
If your cat is more than 20% above their ideal weight, has a medical condition (diabetes, kidney disease, hyperthyroidism, inflammatory bowel disease), is recovering from surgery, or is pregnant or nursing, don't use general guidelines. These situations require individualized targets from your vet, and in some cases from a veterinary nutritionist.
For healthy cats at a normal weight, the guidelines above give you a solid, evidence-based starting point. Adjust based on what you see in your cat's body condition over the following four to six weeks, and revisit with your vet at annual check-ups.
Making Consistent Feeding Easier
The biggest practical challenge for most owners isn't knowing the right amount — it's delivering it consistently, especially with busy schedules or multiple pets. An automatic feeder solves the consistency problem: programmed meals go out at the same time every day, in the right portion, whether you're home or not. For cats transitioning from free feeding to scheduled meals, a feeder with portion control takes the drama out of the change — the food simply appears on schedule, measured precisely, without any human hovering involved.
The right amount of food, delivered consistently, at predictable times: that's the entire formula. The math takes five minutes once. The habit takes a week or two to establish. The benefit — a cat at a healthy weight, with a healthy metabolism, living a longer and more comfortable life — lasts for years.