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
Orijen Regional Red Grain-Free is one of the more calorie-dense dry dog foods we track: at 463 kcal per cup it has more energy than 93% of the 140 dry dog foods in our list. You will pour less of it than you might expect.
To show how much the food matters: a 40 lb spayed or neutered dog needs about 985 kcal a day. That is 2 ⅛ 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 120 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.
Orijen Regional Red Grain-Free 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 cup40 g | ½ cup54 g | ½ cup67 g |
| 10 lb 4.5 kg | ⅝ cup68 g | ¾ cup90 g | 1 cup113 g |
| 15 lb 6.8 kg | ¾ cup92 g | 1 cup122 g | 1 ¼ cups153 g |
| 20 lb 9.1 kg | 1 cup114 g | 1 ¼ cups152 g | 1 ⅝ cups190 g |
| 30 lb 13.6 kg | 1 ¼ cups154 g | 1 ¾ cups206 g | 2 ⅛ cups257 g |
| 40 lb 18.1 kg | 1 ⅝ cups191 g | 2 ⅛ cups255 g | 2 ⅝ cups319 g |
| 50 lb 22.7 kg | 1 ⅞ cups226 g | 2 ½ cups302 g | 3 ⅛ cups377 g |
| 60 lb 27.2 kg | 2 ⅛ cups259 g | 2 ⅞ cups346 g | 3 ⅝ cups432 g |
| 70 lb 31.8 kg | 2 ⅜ cups291 g | 3 ¼ cups388 g | 4 cups485 g |
| 80 lb 36.3 kg | 2 ⅝ cups322 g | 3 ⅝ cups429 g | 4 ½ cups536 g |
| 90 lb 40.8 kg | 2 ⅞ cups351 g | 3 ⅞ cups469 g | 4 ⅞ cups586 g |
| 100 lb 45.4 kg | 3 ⅛ cups380 g | 4 ¼ cups507 g | 5 ¼ cups634 g |
Label values: 463 kcal per cup, 3,860 kcal per kg. Source: 1800petmeds.com, checked 18 Oct 2026.
Questions
How much Orijen Regional Red Grain-Free should I feed a 50 lb dog?
About 2 ½ cups or 302 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 Orijen Regional Red Grain-Free?
The label states 463 kcal per cup, 3,860 kcal per kg (checked 18 Oct 2026). Recipes change, so check your bag.