How Much Should I Feed My Cat? Stop Guessing, Start Measuring

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Cat obesity is genuinely common, and it rarely comes from one dramatic overfeeding decision — it comes from a slightly generous scoop, repeated daily, for a couple of years. Most owners aren’t feeding the wrong food. They’re feeding the right food in an amount that was never actually measured against anything.

If you haven’t settled on a food yet, our best dry cat food overall guide is a good starting point — but if the food’s already in the cupboard, here’s how to actually work out the right amount.

So how much should I actually be feeding my cat?

Quick answer
Most adult indoor cats need roughly 20–25 calories per pound of body weight per day, adjusted down for less active or overweight cats and up for particularly active ones. The feeding chart on the bag is a reasonable starting point, but body condition over time is the better guide.

Indoor cats, which make up the vast majority of pet cats, generally need less than the chart’s default assumption, since bag charts are often calculated with a more active lifestyle in mind. Start at the chart’s lower range for an indoor cat and adjust from there based on actual body condition.

The rib and waist test for cats

Quick answer
Run your hands along your cat’s ribcage — you should feel individual ribs easily without pressing hard, and see a visible waist narrowing behind the ribs when viewed from above. Ribs that are hard to feel under a layer of fat usually mean overfeeding.

This matters more than the scale number alone, since healthy weight varies by breed and frame size. A lean Siamese and a naturally stockier British Shorthair can both sit at a perfectly healthy condition while showing very different numbers on a scale.

How to check body condition, step by step

• Run flat hands gently along both sides of the ribcage
• You should feel ribs easily with light pressure, not see them prominently
• Look from above for a visible waist narrowing behind the ribs
• Look from the side for a slight upward tuck from chest to belly
• No detectable waist or rib feel = reduce portions; overly prominent ribs = increase them

Kittens, seniors, and life-stage adjustments

Quick answer
Kittens need considerably more calories per pound than adults and benefit from portions recalculated roughly monthly as they grow. Senior cats often need fewer calories as activity naturally decreases, though some older cats actually need more if an underlying condition is affecting weight, which is worth a vet check.

Growing kittens’ portions shift meaningfully month to month — our kitten food guide covers what to feed and how amounts change through the growth stages.

Senior cats can go either way, which is why our guide to food for senior cats is worth reading in full — unexplained weight loss in an older cat is a more urgent flag than weight gain and deserves a vet visit rather than a portion adjustment alone.

Measuring properly: why guessing goes wrong so easily

Quick answer
Free scoops that come with cat food bags aren’t standardized measuring tools and often don’t match an actual measuring cup. A kitchen scale is the most accurate option, especially since a cat’s total daily food amount is small enough that even a modest measuring error is a large percentage of their intake.

This matters even more for cats than dogs, proportionally, since a cat’s whole daily ration might only be a third to half a cup of dry food — a 10-gram miscalculation is a much bigger deal at that scale than the same error would be for a large dog. This is also worth considering alongside the wet vs dry decision, since calorie density per can or cup varies noticeably by format and brand.

Weigh the “free scoop” against a real measuring cup once and you’ll likely have your own what the furry moment — a surprising number of owners discover they’ve been overfeeding by 15-20% simply because the scoop that came in the bag was never an accurate unit to begin with.

Frequently asked questions

Should I free-feed my cat or schedule meals?

Scheduled meals give you far better portion control and make it much easier to notice if your cat stops eating — an important early illness signal that’s easy to miss with a bowl that’s always topped up. Two to three meals a day works well for most adult cats.

My cat is always begging — are they actually hungry?

Usually not, if they’re at a healthy weight and eating an appropriate amount. Cats are highly effective at soliciting food regardless of actual hunger, and it’s one of the more successful behaviors evolution has handed them.

Do indoor cats need less food than outdoor cats?

Generally yes, since outdoor cats typically burn more calories through activity and exposure to colder temperatures. Adjust the baseline down for a purely indoor lifestyle and monitor body condition from there.

A measuring cup solves more problems than a new food ever will

The best cat food in the world still causes weight problems if the amount is wrong, and weight problems in cats carry real health consequences — diabetes and joint strain among them. Get an actual measuring cup or a kitchen scale, check body condition every few weeks, and adjust as life stage and activity change.

Related articles → Best dry cat food in 2026: the full guide → Best cat food for kittens → Best cat food for senior cats → Wet vs dry cat food: the honest comparison