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 Giant Schnauzer weighs males 75–95 lb, females 55–80 lb (AKC Breed Weight Chart (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 Giant Schnauzer weight.
| Weight | Couch potato | Spayed or neutered | Very active |
|---|---|---|---|
| 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 |
| 68 lb 30.8 kg | 2 ⅞ cups301 g · 1,099 kcal | 3 ⅞ cups401 g · 1,466 kcal | 4 ¾ cups502 g · 1,832 kcal |
| 75 lb 34.0 kg | 3 ⅛ cups324 g · 1,183 kcal | 4 ⅛ cups432 g · 1,578 kcal | 5 ⅛ cups540 g · 1,972 kcal |
| 80 lb 36.3 kg | 3 ¼ cups340 g · 1,242 kcal | 4 ⅜ cups453 g · 1,656 kcal | 5 ⅜ cups567 g · 2,070 kcal |
| 85 lb 38.6 kg | 3 ⅜ cups356 g · 1,300 kcal | 4 ½ cups474 g · 1,733 kcal | 5 ⅝ cups593 g · 2,166 kcal |
| 95 lb 43.1 kg | 3 ¾ cups387 g · 1,413 kcal | 4 ⅞ cups516 g · 1,884 kcal | 6 ⅛ cups645 g · 2,355 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; weight from AKC Breed Weight Chart (separate male/female values).
Good to know
The AKC sums up the Giant Schnauzer in three words: alert, trainable, loyal. How active yours really is matters more for the bowl than the breed name, so pick the column that fits your own dog.
Giant Schnauzer puppies are large-breed puppies. VCA Animal Hospitals advises steady, measured feeding of a large-breed puppy food rather than free feeding, and notes that big breeds can take 18 to 24 months to reach adulthood. Use the puppy calculator until then.