How Much to Feed a Puppy

The short version

Puppies are building bone, muscle, and organs while running around all day, so they need more calories per pound than adults. But overfeeding is just as risky as underfeeding: puppies that grow too fast, especially large breeds, are more likely to develop joint and skeletal problems. The goal is steady, lean growth. Use a calorie target, divide it into several measured meals, and check your puppy’s body shape every week or two.

Step 1: Work out daily calories

Veterinary nutrition uses Resting Energy Requirement, or RER, as a baseline: 70 × (weight in kg) to the power of 0.75. For growing puppies it is multiplied by about 3.0 until around four months, and about 2.0 from four months until near adult size. Here is what that looks like for a few weights:

To skip the arithmetic, enter your puppy’s numbers into the puppy food calculator. Use the puppy weight calculator first if you want to know the expected adult size, which affects the growth multiplier and whether to use a large-breed formula.

Step 2: Convert calories to cups

Look for “kcal/cup” or “ME” on your food’s label. If the food has 400 kcal per cup and your puppy needs 700 kcal, that is 1.75 cups per day. Foods differ a lot. A grain-free or high-fat formula might offer 500 kcal per cup, while a lighter one may offer 320. This is why the printed cup chart on a different brand is a poor guide. Weighing food in grams on a kitchen scale is more accurate than a scoop. If you change food brand, recalculate rather than keeping the old cup amount.

Step 3: Choose a meal schedule

• 6–12 weeks: four meals, evenly spaced. Toy breeds may need a small snack before bedtime.
• 3–6 months: three meals.
• 6–12 months: two to three meals; most settle on two.
• Adulthood: two meals, or one for some dogs, as advised by your vet.

A consistent schedule makes house training easier, since puppies usually need to go out within 15 to 30 minutes of eating. It also helps you spot problems: a puppy that suddenly skips meals is easier to notice than one grazing from a full bowl.

Step 4: Check body condition weekly

The bag and calculator give a starting point, but your puppy decides how well it works. Run your hands over the ribs: you should feel them easily under a thin layer of padding. From above, a waist should be visible behind the ribs. If ribs are hard to find, cut about 10 percent; if they are prominent, increase by 10 percent and ask your vet to check for parasites. The 1–9 body condition scale used by veterinarians is explained in our body condition helper. Weigh your puppy every one to two weeks and write it down.

Large-breed puppies need extra care

Large and giant breeds are prone to developmental orthopedic disease when they grow too quickly, and excess calcium makes the risk worse. Feed a formula labeled for large-breed puppies, measure portions carefully, and keep your puppy lean. Do not add calcium supplements. Growth should be steady rather than as fast as possible. Our guide on when puppies stop growing has timelines by size.

Common overfeeding traps

• Cups creeping up: amounts that were right at 12 weeks are often too much at 16 weeks because the growth factor falls.
• Treat inflation: training rewards, chews, and table scraps can reach 30 percent of calories in a busy household. Keep treats to about 10 percent and reduce meals accordingly.
• Multiple feeders: if several people feed the puppy, write amounts on a shared note.
• Reading the bag as a minimum: manufacturers’ ranges are broad and often generous.

When to switch to adult food

Small and medium breeds usually switch at 9 to 12 months, large and giant breeds at 15 to 18 months or later. Move gradually over seven to ten days. After switching, use the dog food calculator to set an adult calorie target, since the puppy multipliers no longer apply. Neutered adults often need less energy than intact dogs, so keep monitoring weight for the first few months.

When to call the vet

Contact your vet if your puppy refuses food for more than a day, vomits repeatedly, has diarrhea lasting over a day, or seems lethargic. Very small puppies can develop low blood sugar quickly. Puppies with a pot belly and poor growth may have worms. Ask your vet to confirm a feeding plan at each vaccination visit, and ask for help if you are considering a homemade diet; see our homemade dog food calculator note about balance.