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 Pro Plan Weight Management Chicken and Rice is on the lighter side: at 364 kcal per cup it has less energy than 68% of the 140 dry dog foods in our list, so the bowl will look fuller for the same calories.
To show how much the food matters: a 40 lb spayed or neutered dog needs about 985 kcal a day. That is 2 ¾ cups of this food, but 1 ⅞ cups of Purina Pro Plan All Ages Sport Performance 30/20 Salmon & Rice and 3 ⅝ cups of Kirkland Signature Healthy Weight Chicken and Vegetable. Same dog, same day, very different scoops.
A level 8 oz measuring cup holds about 103 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 dog 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.
Purina Pro Plan Weight Management Chicken and Rice feeding chart
Daily amounts for healthy adult dogs with no treats, from the label calories and the AAHA 2021 energy factors. Split the amount into meals.
| Weight | Couch dog | Spayed or neutered | Very active |
|---|---|---|---|
| 5 lb 2.3 kg | ⅜ cup44 g | ⅝ cup59 g | ¾ cup73 g |
| 10 lb 4.5 kg | ¾ cup74 g | 1 cup98 g | 1 ¼ cups123 g |
| 15 lb 6.8 kg | 1 cup100 g | 1 ¼ cups133 g | 1 ⅝ cups167 g |
| 20 lb 9.1 kg | 1 ¼ cups124 g | 1 ⅝ cups166 g | 2 cups207 g |
| 30 lb 13.6 kg | 1 ⅝ cups168 g | 2 ⅛ cups224 g | 2 ¾ cups281 g |
| 40 lb 18.1 kg | 2 cups209 g | 2 ¾ cups279 g | 3 ⅜ cups348 g |
| 50 lb 22.7 kg | 2 ⅜ cups247 g | 3 ¼ cups329 g | 4 cups412 g |
| 60 lb 27.2 kg | 2 ¾ cups283 g | 3 ⅝ cups378 g | 4 ⅝ cups472 g |
| 70 lb 31.8 kg | 3 ⅛ cups318 g | 4 ⅛ cups424 g | 5 ⅛ cups530 g |
| 80 lb 36.3 kg | 3 ⅜ cups351 g | 4 ½ cups468 g | 5 ⅝ cups586 g |
| 90 lb 40.8 kg | 3 ¾ cups384 g | 5 cups512 g | 6 ¼ cups640 g |
| 100 lb 45.4 kg | 4 cups415 g | 5 ⅜ cups554 g | 6 ¾ cups692 g |
Label values: 364 kcal per cup, 3,535 kcal per kg. Source: purina.com, checked 18 Oct 2026.
Questions
How much Purina Pro Plan Weight Management Chicken and Rice should I feed a 50 lb dog?
About 3 ¼ cups or 329 g a day for a spayed or neutered dog, before treats. That is 1,164 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 Pro Plan Weight Management Chicken and Rice?
The label states 364 kcal per cup, 3,535 kcal per kg (checked 18 Oct 2026). Recipes change, so check your bag.
More from Purina Pro Plan
- Adult Sensitive Skin & Stomach Salmon & Rice
- Puppy Sensitive Skin & Stomach Salmon & Rice
- Puppy Chicken & Rice
- Adult Complete Essentials Shredded Blend Chicken & Rice with Probiotics
- Adult Large Breed Chicken & Rice
- Adult Toy Breed Chicken & Rice
- Adult 7+ Shredded Blend Chicken & Rice Large Breed Senior
- Complete Essentials Adult Chicken & Rice Entrée Classic
- Sensitive Skin & Stomach Salmon & Rice Entrée Classic
- Puppy Sensitive Skin & Stomach Salmon & Rice Entrée Classic