When to Switch Your Kitten to Adult Cat Food: 5 Clear Signs
Just like kids graduate from baby food, kittens eventually grow out of their nutrient-rich kitten diets. Knowing when it’s time to transition your tiny furball to adult cat food is an important step in supporting their long-term health. If you’re wondering whether your playful purr machine is now a full-grown floof, we’ve rounded up five clear signs your kitten is ready for adult food. At Petdirect, we get pet, so you can count on us to guide you through each life stage with expert-backed tips and tail-wagging (or purring) products.
1. They’re Around 12 Months Old
Most kittens make the switch to adult food at around 12 months. By this age, they’ve typically matured physically and won't need the extra calories and nutrients found in kitten food. However, some larger breeds like the Maine Coon may keep growing past their first birthday, so it’s worth checking with your vet if you’re unsure.
If your kitten is approaching their first birthday, now’s the time to consider introducing an adult diet like Royal Canin or Hill’s Science Diet, which are specially formulated to meet the needs of adult cats.
2. They’re Less Interested in Frequent Meals
Growing kittens are famously always hungry, often needing three to four small meals a day. Adult cats, however, usually settle into a routine of two meals per day. If your kitten is naturally spacing out their meals or leaving food behind, it might be a sign their energy needs are tapering off and they’re ready for an adult feeding plan.
Try using smart feeders for cats to transition meal portions and schedules gradually. These offer flexibility and help you keep track of their intake.
3. Their Growth Has Slowed Down
Rapid growth is a key part of kittenhood, but as your fur baby nears adult size, growth tends to slow. You might notice their body becoming more proportional, with lean muscle building rather than lanky bursts of size. This steady physique is your cue to adjust their food for maintenance rather than development.
Look to high-quality options from brands like ZIWI or Feline Natural, both offering nutritionally balanced adult cat food that suits Kiwi cats and their lifestyles.
4. They’re Developing Adult Tooth And Coat Characteristics
As kittens mature, their baby teeth give way to adult chompers, and their coat becomes thicker, glossier, and more adult-like. Adult cat food contains specific nutrients to support dental health and maintain a healthy coat — something kitten-specific recipes no longer provide adequately.
To keep their teeth in tip-top condition, explore cat dental care essentials and treats that support strong teeth and gums as they transition.
5. They’re More Settled And Less Hyper
‘Zoomies central’ slowly gives way to more independent lounging and snoozing in sunbeams. As cats settle into adulthood, their energy levels balance out. Since they’ll be burning fewer kilojoules, switching from energy-dense kitten food to an adult formula helps prevent excess weight gain.
If your cat is leaning towards the lounge life, it's a good time to consider weight management formulas to support lifelong wellness, especially for indoor cats.
How To Transition From Kitten To Adult Food
Changing your cat’s diet should be a gradual shift over 7–10 days to avoid upset tummies. Start by mixing a small portion of adult food into their kitten meals, slowly increasing the adult ratio each day. Keep an eye on their appetite, stool quality, and overall mood — if anything seems off, pause or slow the transition.
Whether you prefer dry kibble, wet food, or freeze-dried options, Petdirect’s range of adult cat food has something for every palate — even the pickiest purrers.
Time To Grow Up (Just A Bit!)
While your kitten will always be your baby in spirit, their nutritional needs grow up with them. Keeping an eye on these five signs helps you give them exactly what they need at the right time. At Petdirect, we’re here to support every stage of your pet parenting journey, with top-tier brands, easy Autodeliver options, and expert-backed advice, because we get pet.
Explore our full range of adult cat food to find the perfect match for your newly-grown feline and make the switch confidently today.