Purina ONE feeding guide
Every Purina ONE product carries its own feeding guidelines on the back of the pack, set out by your cat's weight and life stage, and that pack is always the accurate source for how much to feed — this page explains how to use those guidelines properly rather than replacing them with a general figure.
Using the guidelines on the pack
The feeding table on a Purina ONE bag or pouch gives an amount based on your cat's current weight, adjusted for whether they are a kitten, an adult, a senior, or need a lighter formula for weight management. Weigh your cat periodically rather than guessing, since even a small miscalculation in daily amount adds up over weeks.
If you are feeding a mix of wet and dry Purina ONE products, adjust the dry portion down to account for the wet food's calories rather than feeding both at their full individual guideline amounts, which would overfeed most cats.
When to check with your vet instead
A pack's feeding guide is a sensible starting point for a healthy cat at a normal weight, but a cat who is under- or overweight, has a medical condition, or is not maintaining a stable weight on the guideline amount needs an individually tailored plan from a vet rather than sticking rigidly to the pack figure.
A cat that is neutered, largely indoor, or naturally less active than average often needs less than the standard guideline suggests, and your vet can help set a more accurate target if the general figure does not seem to be keeping your cat at a healthy weight.
Feeding across life stages
Purina ONE's kitten formulas are designed for faster growth and higher energy needs, and the feeding table reflects that with more generous amounts relative to body weight than an adult formula carries. Moving a cat onto the adult range at the right age, following the brand's own guidance on when to switch, keeps the calorie intake matched to what a fully grown cat actually needs.
Senior formulas within the range are generally adjusted for a lower activity level and different nutritional priorities in an older cat, so it is worth transitioning at the age the pack suggests rather than keeping an ageing cat on adult food by habit.
From this brand
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.
Whiskas 1+ Salmon Adult Dry Cat Food
Complete salmon dry food for adult cats in a practical 1.9KG bag
£12.39
Whiskas 1+ Lamb Adult Dry Cat Food
Complete lamb dry food for adult cats in a practical 1.9KG bag
£12.39
Whiskas 1 Tuna Adult Dry Cat Food
Complete tuna dry food for adult cats, offered in several bag sizes
From£3.19
Whiskas Kitten Chicken Dry Cat Food
Complete chicken dry food for kittens, available in several bag sizes
From£3.19
Whiskas 1 Chicken Adult Dry Cat Food
A complete dry food for cats 1+, with chicken present only in the brown kibbles
From£3.19
Whiskas 7+ Senior Cat Complete Dry with Chicken
Complete chicken dry food for senior cats aged 7+ in a 1.9KG bag
£12.39
Whiskas 7+ Chicken Adult Dry Cat Food
Complete chicken dry food for senior cats aged 7+ in an 800G bag
£6.09
Whiskas 2-12 Months Kitten Complete Dry Food Chicken
Complete chicken dry food for kittens aged 2-12 months in a 7KG bag
£30.15
Whiskas 1+ Adult Cat Complete Dry Food Tuna
Complete tuna dry cat food for adults in a 7KG bag with 30% protein
£30.15
Whiskas 1+ Adult Cat Complete Dry with Chicken
Complete chicken dry cat food for adults in a 7KG bag with 30% protein
£30.15
Burns Adult/Senior Cat Sensitive Grain Free Duck & Potato
Grain-free duck and potato food for cats with digestive or food sensitivities
£16.49
James Wellbeloved Light Adult Dry Cat Food Fish
A lower-calorie fish dry food for adult cats managing their weight, with joint-support ingredients
£24.65
Common questions
- Does Purina ONE make food for kittens?
- Yes, the range includes dedicated kitten formulas alongside adult and senior lines, each with its own feeding guidelines suited to a kitten's faster growth and higher energy needs.
- How do I switch my cat onto a new Purina ONE recipe?
- Introduce it gradually over about a week, mixing increasing amounts of the new food with the old, rather than switching in one go, which reduces the chance of an upset stomach during the change.
- Should I feed the full amount shown on the pack?
- The pack amount is a guideline based on an average cat at that weight, so treat it as a starting point and adjust based on your own cat's body condition and activity level, checking with your vet if their weight is not stable.
- When should I move my cat from kitten to adult Purina ONE food?
- This varies by individual cat, but most kittens transition to an adult formula somewhere around twelve months old. Check the specific product's guidance and ask your vet if you are unsure when your cat is ready for the switch.
Related
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.