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 Indoor Advantage Senior 7+ sits in the middle of the 55 dry cat foods we track, at 414 kcal per cup.
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.
Senior recipes are made for older cats, who often move less. If yours sleeps most of the day, choose the “Lazy indoor” setting and check the weight every few weeks.
Purina ONE +Plus Indoor Advantage Senior 7+ 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 cup | ⅜ cup | ⅜ cup |
| 6 lb 2.7 kg | ⅜ cup | ⅜ cup | ½ cup |
| 8 lb 3.6 kg | ½ cup | ½ cup | ⅝ cup |
| 10 lb 4.5 kg | ½ cup | ⅝ cup | ¾ cup |
| 12 lb 5.4 kg | ⅝ cup | ¾ cup | ⅞ cup |
| 14 lb 6.4 kg | ⅝ cup | ¾ cup | 1 cup |
| 16 lb 7.3 kg | ¾ cup | ⅞ cup | 1 cup |
Label values: 414 kcal per cup. Source: purina.com, checked 18 Oct 2026.
Questions
How much Purina ONE +Plus Indoor Advantage Senior 7+ should I feed a 10 lb cat?
About ⅝ cup 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 Indoor Advantage Senior 7+?
The label states 414 kcal per cup (checked 18 Oct 2026). Recipes change, so check your bag.