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 Urinary Tract Health is one of the more calorie-dense dry cat foods we track: at 452 kcal per cup it has more energy than 74% 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 10 lb spayed or neutered cat needs about 261 kcal a day. That is ⅝ 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.
A level 8 oz measuring cup holds about 105 g of this kibble. If you have kitchen scales, weighing is more accurate than scooping, because a heaped cup holds noticeably more than a level one.
Purina ONE +Plus Urinary Tract Health feeding chart
Daily amounts for healthy adult cats with no treats, from the label calories and the AAHA 2021 energy factors. Split the amount into meals.
| Weight | Lazy indoor | Spayed or neutered | Intact |
|---|---|---|---|
| 5 lb 2.3 kg | ¼ cup30 g | ⅜ cup36 g | ⅜ cup42 g |
| 6 lb 2.7 kg | ⅜ cup34 g | ⅜ cup41 g | ½ cup48 g |
| 8 lb 3.6 kg | ⅜ cup43 g | ½ cup51 g | ⅝ cup60 g |
| 10 lb 4.5 kg | ½ cup50 g | ⅝ cup61 g | ⅝ cup71 g |
| 12 lb 5.4 kg | ½ cup58 g | ⅝ cup69 g | ¾ cup81 g |
| 14 lb 6.4 kg | ⅝ cup65 g | ¾ cup78 g | ⅞ cup91 g |
| 16 lb 7.3 kg | ⅝ cup72 g | ⅞ cup86 g | 1 cup100 g |
Label values: 452 kcal per cup, 4,313 kcal per kg. Source: purina.com, checked 18 Oct 2026.
Questions
How much Purina ONE +Plus Urinary Tract Health should I feed a 10 lb cat?
About ⅝ cup or 61 g a day for a spayed or neutered cat, before treats. That is 261 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 Urinary Tract Health?
The label states 452 kcal per cup, 4,313 kcal per kg (checked 18 Oct 2026). Recipes change, so check your bag.