How Much Should I Feed My Dog?

Home › Guides › How Much Should I Feed My Dog?

Almost every bag of dog food prints a feeding chart — and almost every dog owner wonders whether to trust it. Those charts are one-size-fits-all starting points: they cannot know whether your dog is neutered, how active it is, or whether it gains weight easily. This guide shows you the method veterinary nutritionists use to work out daily calories, so you can feed with confidence.

Short Answer: Start with the feeding guide on your dog’s food for its current weight, then adjust the amount so your dog keeps a lean body condition — you should be able to feel the ribs easily and see a waist from above. Most neutered adult dogs need about 1.6 times their resting energy requirement per day. Measure every meal, keep treats to 10% of daily calories, and ask your vet to set a calorie target if your dog needs to lose or gain weight.

Last reviewed: 3 November 2026 · The Paw Pilot editorial team

Why the bag’s chart is only a starting point

Feeding charts are built for an “average” dog, but the range around average is huge. A neutered couch-potato Labrador may need 20–30% fewer calories than the chart suggests, while a young intact Border Collie that runs for hours may need far more. The WSAVA Global Nutrition Guidelines — the international standard for pet nutrition — recommend assessing every pet individually and adjusting food to maintain ideal body condition, not just following the label.

Step 1 — Work out daily calories

Veterinary nutritionists start with the resting energy requirement (RER): the calories a resting dog burns in a day. The formula is 70 × (body weight in kg)^0.75. Then they multiply by a factor for the dog’s life stage and lifestyle to get the daily energy requirement (DER).

Dog’s weight	RER (resting)	Typical neutered adult (×1.6)
10 lb (4.5 kg)	~215 kcal	~345 kcal
20 lb (9 kg)	~365 kcal	~585 kcal
30 lb (13.5 kg)	~495 kcal	~795 kcal
40 lb (18 kg)	~615 kcal	~985 kcal
50 lb (23 kg)	~730 kcal	~1,165 kcal
60 lb (27 kg)	~835 kcal	~1,335 kcal
75 lb (34 kg)	~985 kcal	~1,575 kcal
100 lb (45 kg)	~1,225 kcal	~1,960 kcal

Use your dog’s ideal weight, not its current weight, if it is overweight. Then adjust with these multipliers (based on WSAVA guidance):

Dog	Multiply RER by
Weight loss plan	1.0
Inactive or prone to weight gain	1.2–1.4
Neutered adult	1.6
Intact adult	1.8
Active or working dog	2.0–5.0
Puppy under 4 months	3.0
Puppy 4 months to adult	2.0
Pregnant	1.6–2.0
Nursing (depends on litter size)	2.0–6.0

Try the Daily Food Portion Calculator

Enter your dog’s weight, age and activity level to get a daily calorie target and portion size.

Open the Calculator

Step 2 — Convert calories into food

Every pet food label sold in the US must carry a calorie content statement (an AAFCO requirement) — look for “kcal/kg” and “kcal/cup” or “kcal/can”. Divide your dog’s daily calorie target by the food’s calories per cup or can. Example: a 40 lb neutered dog needs about 985 kcal a day; a food with 350 kcal per cup means roughly 2.8 cups daily, split across meals.

Weigh the food with kitchen scales for the first week or two — most owners overestimate a “cup” by a surprising margin. Our guide How to Read a Pet Food Label explains where to find the numbers.

How often should I feed my dog?

Age	Meals per day
Under 3 months	4
3–6 months	3
6–12 months	2–3
Adult	2
Senior	2 (smaller, easy-to-digest meals)

Two meals a day suits most adult dogs: it steadies energy, aids digestion and makes it easier to spot a lost appetite — often the first sign of illness. Very large, deep-chested breeds may do better on two or three smaller meals rather than one large one.

How to tell if the amount is right

The scales and your hands are the real test. Weigh your dog monthly (most vet clinics let you pop in for a free weigh-in) and run the body condition check from Is My Dog Overweight?: ribs easy to feel with a light fat covering, a visible waist from above, and a tummy tuck from the side.

If weight is creeping up, cut the daily amount by about 10% and re-check in a month — including treats in the total. If weight is falling unintentionally, or your dog seems constantly hungry and restless, talk to your vet before simply adding food.

Common feeding mistakes

Eyeballing portions. Scoops, mugs and handfuls drift upward over time. Measure for at least a few weeks.
Forgetting treats. Treats, dental chews and table scraps all count — keep them within 10% of daily calories (see How Many Treats Can My Dog Have a Day?).
Feeding the current weight of an overweight dog. Always calculate from the target weight your vet sets.
Not re-checking after a food change. Calorie density varies enormously between foods — the same “two cups” can differ by hundreds of calories.

Frequently asked questions

Should I feed my dog once or twice a day?
Twice a day is best for most adult dogs. One large meal a day is linked to more begging, hunger-related behaviour and, in deep-chested breeds, a higher risk of bloat.

Can I just trust the chart on the bag?
Use it as a starting point for the first 2–4 weeks, then adjust based on your dog’s weight trend and body condition. The chart does not know your individual dog.

How quickly should I adjust portions?
Change by about 10% at a time and reassess after 2–4 weeks. Weight should move gradually — rapid loss or gain deserves a vet visit.

Do puppies need puppy food, or is adult food fine?
Puppies need food formulated for growth (an AAFCO “growth” or “all life stages” statement) with the right calcium and calorie levels — adult food alone does not meet their needs.

What about raw or home-cooked diets?
These need careful formulation to avoid deficiencies; most published recipes analysed by veterinary nutritionists fall short. If you go this route, have the recipe checked by your vet or a board-certified veterinary nutritionist.

Related guides

Disclaimer: This guide is for general information only and is not a substitute for veterinary advice. If your dog needs to lose or gain weight, or has a health condition, ask your veterinarian for a tailored feeding plan.