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
Iams Proactive Health Adult Indoor Weight & Hairball Care with Chicken & Turkey is on the lighter side: at 302 kcal per cup it has less energy than 98% of the 55 dry cat foods in our list, so the bowl will look fuller for the same calories.
To show how much the food matters: a 10 lb spayed or neutered cat needs about 261 kcal a day. That is ⅞ 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 91 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.
This is a weight-control recipe. If your cat needs to slim down, tick “Needs to lose weight” in the calculator and enter the target weight your vet gave you; the portion is then worked out for the target, not the current weight.
Iams Proactive Health Adult Indoor Weight & Hairball Care with Chicken & Turkey 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 | ⅜ cup39 g | ½ cup47 g | ⅝ cup55 g |
| 6 lb 2.7 kg | ½ cup45 g | ⅝ cup54 g | ¾ cup63 g |
| 8 lb 3.6 kg | ⅝ cup56 g | ¾ cup67 g | ⅞ cup78 g |
| 10 lb 4.5 kg | ¾ cup66 g | ⅞ cup79 g | 1 cup92 g |
| 12 lb 5.4 kg | ⅞ cup75 g | 1 cup90 g | 1 ⅛ cups105 g |
| 14 lb 6.4 kg | ⅞ cup84 g | 1 ⅛ cups101 g | 1 ¼ cups118 g |
| 16 lb 7.3 kg | 1 cup93 g | 1 ¼ cups112 g | 1 ⅜ cups131 g |
Label values: 302 kcal per cup, 3,314 kcal per kg. Source: chewy.com, checked 18 Oct 2026.
Questions
How much Iams Proactive Health Adult Indoor Weight & Hairball Care with Chicken & Turkey should I feed a 10 lb cat?
About ⅞ cup or 79 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 Iams Proactive Health Adult Indoor Weight & Hairball Care with Chicken & Turkey?
The label states 302 kcal per cup, 3,314 kcal per kg (checked 18 Oct 2026). Recipes change, so check your bag.