How Much Should You Feed Your Dog? A Portion Guide by Weight and Age (2026)
In this guide 10 sections
The bag says one thing, your vet said another, and your dog says the bowl is empty either way. Portion size sounds simple until you try to answer it, because the right amount depends on weight, age, activity, and body condition — not just on the label.
Guessing high is the more common mistake, and it shows up slowly: a waist that fills in, a dog who slows down on walks, a little more weight at every annual visit. Guessing low has its own problems, especially in puppies and seniors.
Short answer: Start with your dog’s ideal body weight, not their current weight if they are overweight. Feed roughly 20–35 calories per pound of ideal weight per day — smaller dogs need more per pound than giant breeds — then adjust by about 10% every two weeks based on body condition. A lean adult dog should have ribs you can feel easily, a visible waist from above, and a tuck from the side. For a 50 lb dog on a 350–400 kcal per cup kibble, that lands near 3 to 3½ cups a day, split across two meals.
Start with body condition, not the scale
Body condition score is what vets actually use, and it matters more than weight alone. A 60 lb Labrador and a 60 lb Greyhound should not eat the same amount, and a dog carrying extra weight should be fed for the body they should have rather than the body they currently have.
You can assess this at home in about thirty seconds. Run your hands along your dog’s ribcage with light pressure:
- Too thin: ribs, spine, and hip bones feel sharp and prominent. The waist is sharply pinched.
- Ideal: ribs are easy to feel under a thin layer of fat, like the back of your hand. From above there is a visible waist behind the ribs, and from the side the belly tucks up.
- Overweight: ribs are hard to find under padding, like the palm of your hand. The waist is barely visible, and the back looks flat or rounded.
Weigh your dog monthly on a baby scale or at the vet, and write it down. Weight creeps on in fractions of a pound per week, which means it is almost invisible without a record.
How much to feed by weight
The table below is a starting point for a typical neutered adult dog eating a kibble in the 350–400 kcal per cup range. Two dogs of the same weight can differ by a third of a cup depending on activity, coat, age, and metabolism. Use this as the number you adjust from, not a fixed rule.
| Ideal weight | Approx. daily calories | Kibble per day | Approx. grams |
|---|---|---|---|
| 10 lb / 4.5 kg | 330–360 kcal | ¾ to 1 cup | 85–115 g |
| 20 lb / 9 kg | 550–600 kcal | 1½ to 1¾ cups | 165–200 g |
| 30 lb / 14 kg | 760–820 kcal | 2 to 2⅓ cups | 220–265 g |
| 50 lb / 23 kg | 1,120–1,200 kcal | 3 to 3½ cups | 330–400 g |
| 70 lb / 32 kg | 1,450–1,550 kcal | 3⅔ to 4⅓ cups | 400–490 g |
| 90 lb / 41 kg | 1,750–1,850 kcal | 4½ to 5¼ cups | 500–590 g |
Those calorie figures assume a moderately active, neutered adult. A working dog may need meaningfully more; a couch-loving senior may need less. If your food is denser or lighter than 350–400 kcal per cup, the cup numbers shift — check the calorie statement on the label rather than assuming.
Split the daily total into two meals for most adults. One large meal a day suits some dogs but raises the risk of bloat in deep-chested breeds, so two is the safer default.
Puppies: more calories, smaller meals
Puppies need considerably more calories per pound than adults because they are building bone, muscle, and organs. A growing puppy may eat close to twice an adult’s maintenance amount per pound at peak growth, and large-breed puppies have a longer growth window than small breeds.
- Up to about 4 months: three to four small meals a day, using a puppy-formulated diet.
- 4 to 6 months: three meals a day works for most.
- 6 to 12 months: move to two meals as growth slows. Large and giant breeds may stay on puppy food longer.
Do not free-feed a puppy. Measured meals let you spot appetite changes early, which is one of the most useful health signals you have. Large-breed puppies benefit from controlled growth — overfeeding a big puppy does not make a bigger adult, it adds strain to developing joints.
Transition to adult food based on size and your vet’s guidance rather than the calendar alone. Small breeds often finish growing around 9–12 months, while giant breeds can still be growing at 18–24 months.
Seniors: fewer calories, more attention
Senior dogs usually need fewer calories as muscle mass declines and activity drops, but their protein and digestibility needs stay high. That combination is why “just feed less of the adult food” is not always the best answer.
Watch for these shifts after about age seven, earlier in giant breeds: reduced activity, weight loss despite eating, picky eating, or a diagnosis of kidney or heart disease. Each calls for a different response rather than a smaller scoop of the same food.
- Reduced activity — cut portions by roughly 10% and reassess in two weeks rather than switching foods blindly.
- Weight loss despite eating — a reason for a vet visit, not a bigger bowl. Dental pain, digestive disease, and metabolic problems all present this way.
- Picky eating — often dental or nausea-related. Softer, more aromatic food can help, and our guide to wet dog food and hydration covers how moisture-rich diets fit into a senior feeding plan.
- Kidney or heart disease — these need a therapeutic diet prescribed by your vet, not an over-the-counter senior formula.
Treats should stay under 10% of daily calories
This is the rule most households break without noticing. Veterinary guidance generally suggests keeping treats, chews, table scraps, and training rewards to no more than about 10% of a dog’s daily calorie intake, with the rest coming from a complete and balanced diet.
For a dog eating 600 calories a day, that is 60 calories of treats. For a dog on 1,200 calories, it is 120. A single large biscuit or a stuffed chew can use up most of that in one sitting.
Practical ways to stay inside the budget: break treats into pea-sized pieces, measure the day’s kibble in the morning and use a handful for training, and count long-lasting chews, which are calorie-dense even though they take an hour to finish. Cheese, peanut butter, and leftovers add up faster than most owners expect.
If your dog has a sensitive stomach, treat changes are a common trigger. Our guide to dog food for sensitive stomachs covers how to introduce new foods and treats without upsetting digestion.
Weigh the food, do not scoop it
Two people in the same household can scoop the same “one cup” and end up with meaningfully different amounts, because kibble settles, stacks, and mounds differently depending on the shape and the scoop. Over a month, that drift is enough to change a dog’s weight.
A cheap kitchen scale removes the variable entirely. Weigh in grams, follow the bag’s calorie statement, and adjust. It takes five extra seconds and is the most reliable change most owners can make. Estimating by eye, or free-feeding, makes intake invisible.
Why the bag chart tends to overfeed
Bag charts are a legal requirement more than a personalized recommendation. They cover a wide weight range and typically assume an intact, moderately active adult, while neutered pets need fewer calories than intact animals of the same size. Most companion dogs are also less active than the “active” column assumes.
Charts also get read as a target rather than a range. Owners find the row for their dog’s current weight — which may already be too high — and feed to maintain it.
Use the bag as a sanity check, then let body condition be the referee. If your dog’s ribs are getting harder to feel, reduce by about 10% and reassess in two weeks. If ribs and spine are sharp, increase by 10% and reassess. Small adjustments beat dramatic changes.
When to ask your vet
Most portion questions can be settled at home with a scale and a body condition check. Some cannot.
Book a vet visit if your dog has: unexplained weight loss despite a normal or increased appetite, rapid weight gain without a feeding change, vomiting or diarrhea, a refusal to eat for more than a day, noticeable muscle loss along the spine, a condition such as diabetes or kidney disease, a pregnancy or nursing litter, or a large-breed puppy you are unsure how to feed.
Prescription and therapeutic diets should always be dosed by your vet, because their calorie density varies widely and the target is a clinical outcome rather than a number on a chart.
The bottom line
Feed to body condition, not to the bag. Start with a calorie estimate based on ideal weight, measure in grams, cap treats near 10% of daily calories, and adjust in small steps every two weeks. Puppies need more calories and more meals; seniors often need fewer calories but more attention to protein and appetite. If weight drops or climbs without a reason, that is a vet conversation, not a portion tweak.
Frequently Asked Questions
How many cups of food should I feed my dog per day?
It depends on the calorie density of the food and your dog’s ideal weight. A 20 lb adult on a 350–400 kcal per cup kibble typically needs about 1½ to 1¾ cups a day, while a 50 lb dog needs roughly 3 to 3½ cups. Check the calorie statement on your bag rather than assuming.
Should I feed once or twice a day?
Two meals a day suits most adult dogs and reduces the risk of bloat in deep-chested breeds. Puppies need three or four smaller meals until about four to six months. One meal a day works for some dogs but gives you less flexibility to monitor appetite.
How do I know if my dog is at a healthy weight?
You should be able to feel the ribs easily under a thin layer of fat, see a waist from above, and see a belly tuck from the side. Sharp, prominent bones suggest underweight; ribs you cannot find under padding suggest overweight.
Why is my dog always hungry after meals?
Some dogs are simply food-motivated, but persistent hunger can mean the portion is too small or the food is low in protein or fiber. Check body condition first, then ask your vet if weight is dropping or appetite has suddenly increased.
Are the feeding charts on the bag accurate?
They are a broad starting point rather than a personalized recommendation. They usually assume an intact, moderately active adult, and many neutered companion dogs need fewer calories than the chart suggests. Use body condition to adjust up or down from the chart’s number.
How many treats can my dog have each day?
Veterinary guidance generally suggests keeping treats and extras to about 10% or less of daily calories. For a dog eating 600 calories a day, that is roughly 60 calories of treats. Break biscuits into small pieces and count calorie-dense chews.
Should I measure food by volume or by weight?
Weighing in grams is more accurate, because the same “cup” holds different amounts depending on kibble shape and how it settles. Volume is fine once portions are stable, as long as you level the cup the same way each time.
How much should I feed a puppy compared with an adult dog?
Puppies need more calories per pound because they are growing, and they do best with measured meals three to four times a day. Large-breed puppies should grow steadily rather than quickly, so follow a puppy formula and your vet’s guidance.