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.
A healthy adult Border Collie weighs 30–55 lb (AKC Breed Weight Chart (combined male/female range; AKC standard gives no weight)). Below are daily amounts for that range, for a typical dry dog food (382 kcal per cup, the middle of the dog foods in our list). For your own food, use the calculator above: it is already set to a Border Collie weight.
| Weight | Couch potato | Spayed or neutered | Very active |
|---|---|---|---|
| 30 lb 13.6 kg | 1 ½ cups163 g · 595 kcal | 2 ⅛ cups217 g · 794 kcal | 2 ⅝ cups272 g · 992 kcal |
| 42 lb 19.1 kg | 2 cups210 g · 766 kcal | 2 ⅝ cups280 g · 1,021 kcal | 3 ⅜ cups349 g · 1,277 kcal |
| 55 lb 24.9 kg | 2 ½ cups257 g · 938 kcal | 3 ¼ cups342 g · 1,250 kcal | 4 ⅛ cups428 g · 1,563 kcal |
Daily totals with no treats. Worked out from resting energy (70 × kg0.75) and the AAHA 2021 life-stage factors. Weight source note: AKC standard gives height only (males 19-22 in, females 18-21 in); weight from AKC Breed Weight Chart.
Good to know
The AKC sums up the Border Collie in three words: smart, energetic, affectionate. How active yours really is matters more for the bowl than the breed name, so pick the column that fits your own dog.