Some links on this page are affiliate links. If you buy through them we may earn a commission at no extra cost to you. How we make money.
Most healthy adult indoor cats need roughly 20 to 30 calories per pound of ideal body weight per day, which works out to about 200 to 260 calories for a 10 pound cat. Treat that as a starting point, then adjust using the food label, a body condition check and your vet's advice.
Key takeaways
- Feed by calories, not scoops: most healthy adult cats need roughly 20 to 30 calories per pound of ideal weight daily, but needs vary.
- Kittens need frequent meals of growth food until about 12 months, and should be weighed regularly to confirm steady gain.
- Wet food is lower in calories per volume while dry food is dense, so measure carefully, ideally by weight, and count treats.
- Use the body condition score (ribs, waist, belly tuck) rather than the scale alone to decide whether to adjust portions.
- Never crash diet a cat. Plan weight loss with your vet and call promptly if your cat stops eating for a day or more.
The feeding guide on the bag is a starting point, not a prescription. It is written for an average cat, and your cat may be smaller, older, neutered, bored or very active.
The good news is that you can work out a sensible portion in a few minutes. You need three things: your cat's ideal weight, the calories in the food, and a quick hands-on check of body condition.
This guide walks through calorie ranges by age and weight, how wet and dry food compare, how to read your cat's body shape, how to space meals, and how to handle weight loss safely. Your vet always has the final word, especially for kittens, seniors and cats with medical conditions.
Calorie Starting Points by Weight
Cats are fed by calories, not by volume. A "scoop" of one food can hold far more energy than a scoop of another, so the first step is to know your cat's daily calorie target.
Vets often use a simple formula. Resting energy requirement (RER) is about 70 x (body weight in kg) to the power of 0.75. Then that number is multiplied by a factor for life stage. These are widely used estimates, not exact needs.
- Neutered adult: about 1.2 x RER
- Intact adult: about 1.4 x RER
- Weight loss: about 0.8 x RER, based on the ideal weight, and only with vet guidance
If that math is off-putting, a rule of thumb gets you close. Many healthy adult indoor cats do well on roughly 20 to 30 calories per pound of ideal body weight per day.
Worked example
Take a neutered 10 pound (4.5 kg) cat at a healthy weight. RER comes out to around 215 calories, and 1.2 x that is about 260. So a sensible range is roughly 200 to 260 calories a day. A sedentary indoor cat may sit at the low end, while a lively young cat may need the high end.
Use ideal weight, not current weight
If your cat weighs 15 pounds but should weigh 11, base the plan on 11. Feeding for the heavier weight just keeps the extra weight on.
Remember treats count
A common guideline is to keep treats to about 10 percent of daily calories or less. For a cat eating 220 calories a day, that is around 22 calories, which is not much. Count the lick of tuna, the dental chew and the bite of chicken too.
Start at the calculated amount, then watch weight and body shape for 3 to 4 weeks. Adjust in small steps of roughly 10 percent rather than big swings.
Feeding Kittens by Age
Kittens burn through energy because they are building bones, muscle and organs. Per pound, they need considerably more calories than adults. That is why they should eat food labeled for growth (kitten food, or "all life stages") until about 12 months, and some larger breeds are kept on it longer on their vet's advice.
Because their stomachs are small, kittens do best with frequent meals.
- Weaning to about 4 months: often 3 to 4 meals a day
- 4 to 6 months: commonly 3 meals a day
- 6 to 12 months: 2 to 3 meals a day, shifting toward the adult pattern
These are typical patterns, not strict rules. Your vet may adjust them for a small, underweight or very active kitten.
How much per meal?
Start with the feeding chart on the kitten food label, which is based on age and weight. Divide the daily total into the number of meals. For example, if the chart suggests 3 cans a day for a 4 month old, you might offer one can at three meals, or a mix of wet food and measured dry food.
Many owners find that free feeding dry kitten food works for a lean, growing kitten, but it can set up overeating habits later. If your kitten is gaining weight faster than expected or looks round rather than sleek, move to measured meals.
Watch growth, not just the bowl
Weigh your kitten weekly on a kitchen or baby scale and track it. Steady gain is the goal. A kitten who stops gaining, loses weight, or seems lethargic needs a vet visit promptly, because kittens can decline quickly.
Switching to adult food
Around 10 to 12 months, transition gradually over about a week. Mix a little adult food into the kitten food and increase the proportion each day. Spaying or neutering often lowers calorie needs, so keep an eye on body shape around that time, since many cats start gaining weight after surgery.
Wet vs Dry: How Portions Differ
Wet and dry food can both be complete and balanced. The practical differences are moisture, calorie density and how easy it is to overfeed.
Calorie density
Dry food is calorie dense. Many dry foods fall somewhere around 300 to 500 calories per cup, so a small scoop mistake adds up fast. A 10 percent error on a 240 calorie plan is 24 extra calories a day, which can mean a pound or so of gain over months.
Wet food is mostly water, so you eat more volume for the same calories. A standard 3 ounce can often lands in a rough range of 70 to 100 calories, but brands vary widely. Always check the label, which in the US should list kcal per can or per kg.
Examples of how this plays out
Imagine a 220 calorie daily target:
- All wet: about 2 to 3 cans of an 80 calorie food, split across meals.
- All dry: depends on the food, but with a 400 kcal per cup food it would be a little over half a cup.
- Mixed: for example, one can (about 80 calories) plus the remaining calories from measured dry food.
Which is better?
Many vets like wet food for the added water, especially for cats prone to urinary issues or constipation. Dry food is convenient, cheaper per serving and works in puzzle feeders. Neither is automatically better, and the right choice depends on your cat's health, budget and preferences.
Measure accurately
A scoop or a coffee mug is not a measuring cup. Use a standard measuring cup or, better, a gram scale. When you combine foods, add up the calories from each rather than feeding the full amount of both.
When you change brands, recalculate. Two foods that look similar can differ by 30 percent or more in calories per cup.
Check Body Condition, Not Just the Scale
Weight alone can mislead. A large-framed Maine Coon may be healthy at 14 pounds, while a petite cat is overweight at 11. That is why vets use a body condition score (BCS), usually on a 9 point scale, where 4 to 5 is ideal.
You can do a quick check at home in a minute or two.
The three-part check
- Ribs: Run your hands along the sides of the chest. You should feel the ribs with light pressure, with a thin layer of fat over them, similar to the back of your hand. If you must press hard to find them, your cat is likely overweight. If they feel sharp and obvious, like knuckles, your cat may be too thin.
- Waist from above: Look down at your standing cat. There should be a slight hourglass tuck behind the ribs. A straight tube or an outward bulge suggests extra weight.
- Belly from the side: There should be a mild upward tuck behind the ribcage. A sagging belly that hangs level or lower is a warning sign.
The primordial pouch
Many cats have a loose flap of skin under the belly that swings when they walk. This is normal and is not necessarily fat. Feel underneath it to tell the difference.
Using the score to adjust portions
- Ideal (4 to 5): keep the current amount and recheck monthly.
- Slightly heavy (6): trim by roughly 10 percent and monitor for a month.
- Heavy (7 or more): see your vet to set a safe plan.
- Thin (3 or below): rule out medical causes before simply feeding more.
Long-haired cats can hide weight under fur, so go by touch. Photograph your cat from above each month so you can compare. Changes happen slowly and are easy to miss when you see your cat every day.
Meal Schedules That Fit Real Life
How often you feed matters almost as much as how much. The best schedule is one you can keep consistent and that suits your cat's age and health.
Common schedules for adults
- Two meals a day: Simple, works well with a work schedule, and gives the cat a routine. Typically morning and evening.
- Three to four small meals: Closer to how cats naturally eat, and may reduce begging or vomiting from eating too fast. Automatic feeders can help if you are out.
- Free feeding: Leaving dry food out all day works for some cats who self-regulate, but many do not. It makes it hard to notice appetite changes, and it often leads to weight gain.
Sample day for a 220 calorie cat
- 7 am: 1 can of wet food (about 80 calories)
- 12 pm: A quarter of the daily dry allotment in a puzzle feeder
- 6 pm: Another can of wet food
- 10 pm: The remaining dry food
That is only an example. The real numbers depend on your food's calories.
Multi-cat homes
Feed cats in separate spaces if one eats fast or gobbles the other's portion. A microchip-activated feeder or a closed door during meals can prevent a heavy cat from eating a thin cat's food.
Slow it down
Cats that bolt food and then vomit may benefit from a puzzle feeder, a lick mat, or scattering kibble across a baking sheet. These also add enrichment for indoor cats.
Do not ignore appetite changes
A cat who suddenly eats much more or much less than usual should be checked. A cat that refuses food for more than a day or so needs prompt veterinary attention. Cats, especially overweight ones, can develop a serious liver problem when they go without eating, so do not wait it out.
Weight Loss and Senior Cats Safely
Obesity is common in pet cats and is linked to problems such as diabetes and joint pain. But cats must never be put on a crash diet. Rapid weight loss can trigger hepatic lipidosis (fatty liver disease), which can be life threatening.
Start with the vet
Book an exam first. Your vet can rule out illness, confirm an ideal weight, calculate a calorie target, and recommend a diet. Many weight management foods are formulated so cats still get all essential nutrients at reduced calories. Routine visits and rechecks can add up, so some owners look into options like the Pet Assure Veterinary Discount Plan, which is a discount plan rather than insurance.
What a safe plan looks like
- Target: a gradual loss, commonly cited at around 0.5 to 2 percent of body weight per week.
- Calories: often about 0.8 x RER of the ideal weight. For a cat aiming for 11 pounds, that might be roughly 150 to 190 calories a day, but your vet should set the number.
- Weigh-ins: every 2 to 4 weeks, using the same scale.
- Patience: it can take many months.
Practical tips
- Weigh food on a gram scale.
- Use wet food or puzzle feeders to help your cat feel full.
- Replace some treats with a few pieces of the regular kibble.
- Add short play sessions, such as 5 to 10 minutes with a wand toy, once or twice a day.
Senior cats
Older cats often have the opposite problem. After about age 10 to 12, many lose muscle and appetite, and some need more calories, not fewer. Unplanned weight loss in a senior is a reason to see the vet, since it can signal dental disease, kidney disease, hyperthyroidism or diabetes. Do not put a senior on a diet without checking first.
Call your vet urgently if your cat stops eating for a day or more, loses weight quickly, vomits repeatedly, or seems weak or lethargic.
Helpful products to consider
Good Grips 11 lb Stainless Steel Food Scale with Pull Out Display
Helpful pickA kitchen scale lets you weigh dry food in grams instead of guessing with a scoop, which can vary a lot from one scoop to the next. It is a simple tool for cats on a weight plan or a strict calorie budget.
PROS
- Weighing is more consistent than scooping
- Useful for portioning dry food and treats
- Easy to reuse for other kitchen tasks
CONS
- Adds one more step at mealtime
- You need to convert kcal per cup to kcal per gram yourself
Nom Nom Fresh Cat Food
Helpful pickA fresh-cooked, subscription-style cat food that suggests portions based on details you enter about your cat, such as weight and activity. It can be a convenient option if you want a moisture-rich diet with calorie-based portioning, though it costs more than typical canned food.
PROS
- Moisture-rich fresh food
- Portion guidance built around your cat's profile
- Can suit picky eaters who prefer wet food
CONS
- Usually pricier than mainstream wet food
- Needs fridge or freezer space
Pet Assure Veterinary Discount Plan
Helpful pickA veterinary discount plan, not insurance, that may help lower the cost of routine visits such as weight checks and diet consults at participating vets. Check whether your vet is in the network and read the terms before enrolling.
PROS
- May help with routine visit costs
- No claim forms, since it works as a discount at the clinic
CONS
- Only works at participating providers
- It is not insurance and does not reimburse costs
Frequently asked questions
How many times a day should I feed my cat?
Most adult cats do well on two meals a day, though three or four smaller meals can suit cats that beg, eat too fast or are home alone for long hours. Kittens need more frequent meals, often three to four a day when very young. Choose a routine you can keep consistent.
How much wet food should a cat eat per day?
It depends on the calories in the food and your cat's target. A 10 pound adult might need about 200 to 260 calories daily. If a can has 80 calories, that is roughly 2 to 3 cans. Always check the label, since calories per can vary by brand.
Is it okay to free feed dry food?
It works for some lean cats who stop when full, but many overeat. Free feeding also makes it harder to notice changes in appetite. If your cat is gaining weight, switch to measured meals, ideally weighed on a gram scale, and use puzzle feeders for variety.
How do I know if I am overfeeding my cat?
Check body condition. If you cannot easily feel the ribs, there is no visible waist from above, or the belly sags, your cat is likely carrying extra weight. Steady weight gain on the scale is another sign. Reduce portions slightly and talk to your vet about a plan.
Do indoor cats need less food than outdoor cats?
Often, yes. Indoor cats are typically less active, and neutered cats tend to need fewer calories than intact ones. Outdoor or very active cats may need more. Use calorie guidelines as a starting point and adjust based on your cat's weight and body condition over several weeks.
