How Much Should I Feed My Cat? A Simple, Vet-Backed Formula

By PawNest Team

Cats are pros at seeming hungry. Here's the vet-backed math behind how much you should actually be feeding your cat each day.

Cats are notoriously good at convincing you they're starving, even minutes after finishing a full bowl. That persistent meowing by the food bowl can make it tempting to just keep refilling it — but overfeeding is one of the most common, and most preventable, health issues in house cats. Figuring out the right amount isn't complicated once you know what actually drives your cat's calorie needs.


The Basic Math: Calories, Not Just Cups

As a general starting point, [PetMD notes](https://www.petmd.com/cat/nutrition/how-much-to-feed-a-cat) that adult cats need roughly 25 to 35 calories per pound of body weight per day — so a 10-pound cat lands somewhere around 250 calories daily. Check your food's label for calories per cup or per can, then do the math to figure out the actual portion. This is far more accurate than trusting the vague "feeding guidelines" printed on many bags, which tend to run generous.

Age, Activity, and Spay/Neuter Status All Shift the Number

Kittens burn through calories fast while they're growing and often need noticeably more food relative to their size than adult cats. Senior cats, especially past age seven, typically need fewer calories as their activity naturally declines — though some older cats have the opposite problem and need more due to conditions like hyperthyroidism, which is worth flagging to your vet if your senior cat is losing weight despite eating normally. Spaying or neutering also lowers metabolic rate, which is part of why so many cats gain weight in the months after the procedure if portions aren't adjusted.

Wet Food vs. Dry Food Changes the Calculation

Because wet food contains far more water than dry kibble, the calorie density per cup is very different between the two — which is one reason switching food types without recalculating portions often leads to weight changes. If you're deciding between the two for your cat, [wet food vs. dry food for cats](/blog/wet-food-vs-dry-food-for-cats) breaks down the tradeoffs in more depth, including hydration benefits that matter for cats prone to urinary issues.

Multi-Cat Households Need Individual Portions

When cats share a feeding area, it's easy for one to eat more than their share while another goes underfed — especially in a home with [multiple cats sharing a litter box setup](/blog/best-litter-box-setup-for-multiple-cats), where food and resource competition often overlap. Feeding cats in separate spots, or using microchip or timed feeders, helps ensure each cat gets the portion that's right for their weight and health, not just whoever eats fastest.

Treats and Table Scraps Add Up Fast

Cat treats are calorie-dense relative to their size, and it's easy to underestimate how much a few pieces a day contribute. As a rule of thumb, treats shouldn't make up more than about 10% of your cat's daily calorie intake — anything beyond that and it's worth trimming their regular meals to compensate.


Frequently asked questions

**How do I know if my cat is overweight?** You should be able to feel their ribs with light pressure and see a slight waist from above; if you can't feel ribs at all, it's worth discussing weight with your vet.

**Should I free-feed my cat or schedule meals?** Scheduled meals, usually two to three times a day, make it much easier to notice appetite changes early than leaving food out all day.

**Why does my cat always act hungry even after eating?** Some cats eat out of boredom or habit rather than true hunger — puzzle feeders can help slow eating and add mental stimulation without adding calories.

**Do indoor cats need less food than outdoor cats?** Generally yes, since indoor cats tend to be less active; adjust portions down if your cat is exclusively indoor and not very playful.

Where PawNest fits in

Getting portions right matters more over months than any single meal — which is exactly the kind of pattern PawNest's Health Insights and Care Timeline are built to surface, alongside the Daily Check-in & Care Score for quick logging. If you're managing food for more than one cat, Care Tasks helps keep each cat's portions and feeding times straight. Take a look at [your dashboard](/dashboard) to get started.

This is general guidance, not a diagnosis — if your cat's appetite or weight changes noticeably, your vet knows them better than any article can.