The maths, with your numbers
No guesswork and no brand chart. This is the same calculation a vet does on paper, so you can check it.
What this means for the bowl
Purina ONE +Plus Healthy Kitten Chicken is one of the more calorie-dense dry cat foods we track: at 518 kcal per cup it has more energy than 89% of the 55 dry cat foods in our list. You will pour less of it than you might expect.
To show how much the food matters: a 4 lb kitten needs about 274 kcal a day. That is ½ cup of this food, but ⅜ cup of Purina Pro Plan Kitten Complete Essentials Chicken & Rice and ⅞ cup of Kirkland Signature Healthy Weight. Same cat, same day, very different scoops.
Kittens need about two and a half times their resting energy until they are a year old. The Merck Veterinary Manual notes that kittens can also be fed free choice. If you portion meals, weigh your kitten weekly and recalculate.
Purina ONE +Plus Healthy Kitten Chicken feeding chart
Daily amounts for growing kittens with no treats, from the label calories and the AAHA 2021 energy factors. Split the amount into meals.
| Weight | Kitten |
|---|---|
| 1 lb 0.5 kg | ⅛ cup |
| 2 lb 0.9 kg | ⅜ cup |
| 3 lb 1.4 kg | ⅜ cup |
| 4 lb 1.8 kg | ½ cup |
| 5 lb 2.3 kg | ⅝ cup |
| 6 lb 2.7 kg | ¾ cup |
| 8 lb 3.6 kg | ⅞ cup |
Label values: 518 kcal per cup. Source: purina.com, checked 18 Oct 2026.
Questions
How much Purina ONE +Plus Healthy Kitten Chicken should I feed a 4 lb kitten?
About ½ cup a day for a kitten, before treats. That is 274 kcal a day divided by the food’s label value. Use the calculator above to adjust for your pet.
How many calories are in Purina ONE +Plus Healthy Kitten Chicken?
The label states 518 kcal per cup (checked 18 Oct 2026). Recipes change, so check your bag.