Bags each year
How much food will this dog eat?
On the v1 defaults — 67.5 lb Labrador Retriever, NRC 2006 typical MER (130 × BW_kg^0.75), 3,823 kcal/kg from the Purina Large Breed Chicken & Rice label PDF, and a 30 lb bag size — the engine returns 11.8719 bags per year.
This is not a feeding prescription. Maintenance-energy math is a starting point. This calculator is not a veterinarian.
Bags per year
11.8719
bags each year on the current inputs.
- Daily kcal
- 1,692.1 kcal/day
- Food mass
- 161.55 kg/year
- Food dollars / year
- —
The worked numbers
FOOD COST v1 — worked calculation ================================ Breed: Labrador Retriever (default) Adult weight used: 67.5 lb = 30.6175 kg Range on file: 55–80 lb. AKC official standard: dogs 65–80 lb, bitches 55–70 lb in working condition. Default 67.5 lb is the midpoint of the combined published range 55–80 lb. Cite: American Kennel Club, “Official Standard for the Labrador Retriever” (Approved February 12, 1994; effective March 31, 1994; retrieved 2026-09-02). https://images.akc.org/pdf/breeds/standards/LabradorRetriever.pdf MER = 130 × BW_kg^0.75 kcal/day (NRC 2006 typical / kenneled-active adult dog) MER = 1,692.0784 kcal/day Cite: Revista Brasileira de Zootecnia / SciELO, “Nutritional management and disease prevention in healthy dogs and cats” (Peer-reviewed review citing NRC (2006); retrieved 2026-09-02). https://www.scielo.br/j/rbz/a/nPV4DPcHDDzLMQgDWYmCMXC/?format=pdf&lang=en Cite: MSD Veterinary Manual, “Nutritional Requirements of Small Animals” (Full review November 2023; last updated September 2024; retrieved 2026-09-02). https://www.msdvetmanual.com/management-and-nutrition/nutrition-small-animals/nutritional-requirements-of-small-animals Dry food: Purina Pro Plan Large Breed Chicken & Rice Formula (dry dog) ME density: 3823 kcal/kg (407 kcal/cup) Cite: Nestlé Purina PetCare, “Pro Plan Large Breed Chicken & Rice Formula Dog Food — product label” (PDF path dated 2024-10; retrieved 2026-09-02). https://www.purina.com/sites/default/files/product-label-deck-file/2024-10/4451_n445123_pro_plan_large_breed_chicken_rice_formula_dog_food_547.pdf kg/day = MER / kcal_per_kg = 1,692.0784 / 3823 = 0.442605 kg/day kg/year = kg/day × 365 = 161.5508 kg/year Bag size: 30 lb = 13.6078 kg (packing size; user-editable; not a price) Bags/year = kg/year / bag_kg = 11.8719 Bag price: null (no dated public shelf price pinned in v1; type a local price) Food annual $: — AAFCO: calorie content on the label is metabolizable energy (ME). This lab is not a veterinarian and does not write a diet.
How many bags of dry food does an adult Labrador eat in a year?
On the v1 defaults — 67.5 lb Labrador Retriever, NRC 2006 typical MER (130 × BW_kg^0.75), 3,823 kcal/kg from the Purina Large Breed Chicken & Rice label PDF, and a 30 lb bag size — the engine returns 11.8719 bags per year.
Which calorie formula does this use?
Daily metabolizable-energy need comes from NRC 2006 (typical adult dog 130 × BW_kg^0.75; inactive dog 95 × BW_kg^0.75; lean cat 100 × BW_kg^0.67). Bag math divides that need by the AAFCO-style ME density printed on a manufacturer Guaranteed Analysis PDF.
Why can I type a local bag price?
If a dollar cannot be cited to a dated public source, the cell stays empty. kcal/kg is cited; the shelf price is yours.
Is this a feeding prescription?
No. Maintenance-energy equations are starting points. This lab is not a veterinarian and does not write diets or treatment plans.