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
Hill's Science Diet Adult Small Bites Chicken & Barley Recipe is on the lighter side: at 365 kcal per cup it has less energy than 67% 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 99 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.
Hill's Science Diet Adult Small Bites Chicken & Barley Recipe 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 cup42 g | ⅝ cup56 g | ¾ cup70 g |
| 10 lb 4.5 kg | ¾ cup71 g | 1 cup95 g | 1 ¼ cups118 g |
| 15 lb 6.8 kg | 1 cup96 g | 1 ¼ cups128 g | 1 ⅝ cups160 g |
| 20 lb 9.1 kg | 1 ¼ cups119 g | 1 ⅝ cups159 g | 2 cups199 g |
| 30 lb 13.6 kg | 1 ⅝ cups162 g | 2 ⅛ cups215 g | 2 ¾ cups269 g |
| 40 lb 18.1 kg | 2 cups201 g | 2 ¾ cups267 g | 3 ⅜ cups334 g |
| 50 lb 22.7 kg | 2 ⅜ cups237 g | 3 ¼ cups316 g | 4 cups395 g |
| 60 lb 27.2 kg | 2 ¾ cups272 g | 3 ⅝ cups362 g | 4 ⅝ cups453 g |
| 70 lb 31.8 kg | 3 ⅛ cups305 g | 4 ⅛ cups407 g | 5 ⅛ cups508 g |
| 80 lb 36.3 kg | 3 ⅜ cups337 g | 4 ½ cups450 g | 5 ⅝ cups562 g |
| 90 lb 40.8 kg | 3 ¾ cups368 g | 5 cups491 g | 6 ¼ cups614 g |
| 100 lb 45.4 kg | 4 cups399 g | 5 ⅜ cups532 g | 6 ¾ cups664 g |
Label values: 365 kcal per cup, 3,683 kcal per kg. Source: hillspet.com, checked 18 Oct 2026.
Questions
How much Hill's Science Diet Adult Small Bites Chicken & Barley Recipe should I feed a 50 lb dog?
About 3 ¼ cups or 316 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 Hill's Science Diet Adult Small Bites Chicken & Barley Recipe?
The label states 365 kcal per cup, 3,683 kcal per kg (checked 18 Oct 2026). Recipes change, so check your bag.
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- Science Diet Adult 7+ Chicken Meal, Barley & Rice Recipe
- Science Diet Puppy Large Breed Chicken & Brown Rice Recipe
- Science Diet Puppy Small Bites Chicken & Brown Rice Recipe
- Science Diet Adult Sensitive Stomach & Skin Small Bites Chicken & Barley Recipe
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