How Much Should I Feed My Dog?

Why There's No Single Answer

Two dogs of the same breed and weight can need very different amounts of food. How much your dog should eat depends on a stack of factors that all pull in different directions:

• Body weight — bigger dogs need more, but not in a straight line (a dog twice the weight doesn't need twice the calories).
• Age and life stage — growing puppies and active young adults burn far more than settled seniors.
• Neuter status — neutered and spayed dogs typically need fewer calories, so they gain weight easily on the same portion.
• Activity level — a working sheepdog and a flat-dwelling companion of equal size live in different worlds.
• Metabolism — like people, some dogs simply run hot or cold.
• The food itself — calorie density varies enormously between brands and between dry, wet, and raw diets.

Because of that last point especially, a "cup of food" means nothing on its own. The same cup can hold wildly different amounts of energy depending on the recipe. So the goal isn't to copy a number from a friend — it's to find the right amount for the dog in front of you.

Start With the Food Label

Every complete dog food carries a feeding guide — a table matching body weight to a daily amount. It's the best starting point you have, but treat it as exactly that: a starting point, not a prescription.

Two things are worth knowing about these charts. First, the amounts are often generous; manufacturers would rather you feed a little too much than have a hungry, dissatisfied dog. Many dogs do well on somewhat less than the chart suggests. Second, the figures are based on your dog's ideal body weight, not the current weight. If your dog is already overweight, feeding for the current number only locks in the problem — feed for the weight your dog should be.

The Calorie Approach (Approximate)

If you want to sense-check the bag's figures, you can estimate your dog's daily energy needs. Nutritionists start from the Resting Energy Requirement (RER) — roughly the calories a dog burns at rest:

RER ≈ 70 × (body weight in kg)^0.75

You then multiply the RER by a factor for life stage and activity to get an estimated daily intake, sometimes called the Maintenance Energy Requirement. The multipliers below are rough, widely used averages — your dog may sit above or below them.

These numbers are an estimate to set a starting portion, nothing more. They don't account for your individual dog's metabolism, and they're easy to get wrong. The feeding label and — above all — your dog's body condition are far better guides than any formula. Use the maths to land in the right ballpark, then trust what you see and feel over the following weeks.

Let PupPlan Do the Maths

PupPlan's nutrition database tracks calories and auto-calculates a daily calorie target from your dog's weight, age, and activity — no formulas required. Log meals, create your own custom foods, and use weight tracking with growth charts to fine-tune the portion until your dog's condition is spot on.

Body Condition Score Beats Any Formula

No chart or calculator knows your dog. Your hands and eyes do. The most reliable way vets and breeders judge whether a dog is the right weight is the body condition score, usually on a 1–9 scale where around 4–5 is ideal. You can check it at home in under a minute:

• Ribs — run your hands along the chest. You should feel the ribs easily under a thin layer of fat, without having to press. If you can't find them, there's too much covering; if they're sharply visible, too little.
• Waist from above — look down at your standing dog. You should see the body narrow behind the ribcage into a clear waist. A straight or bulging outline means extra weight.
• Tummy tuck from the side — viewed from the side, the belly should rise up behind the ribcage rather than hang level or sag.

Score your dog roughly as under-ideal, ideal, or over-ideal. A dog that's a little ribby with a deep tuck may need more food; a dog with no waist and hidden ribs needs less. Recheck every couple of weeks — it changes slowly, so you're watching a trend, not a single reading. Breeds with thick or long coats can hide a lot, so trust your hands over a quick glance.

How Often to Feed

Once you know the total daily amount, split it sensibly across the day:

• Puppies — three to four meals a day. Small stomachs and fast growth mean little and often, tapering down as they mature.
• Adults — one or two meals a day. Twice daily suits most dogs, keeping energy steady and the stomach comfortable.

Whatever rhythm you pick, keep it consistent — the same meals at roughly the same times help digestion and make house-training and routine far easier. And measure properly. A scoop or a "handful" drifts over time, and that drift is how dogs quietly gain weight. A cheap kitchen scale is more accurate than a measuring cup, and weighing food takes seconds once it's a habit.

Treats, Chews & the 10% Rule

Treats count. It's easy to feed a careful, measured meal and then undo it with chews, scraps, and training rewards across the day. The widely used rule of thumb: treats should make up no more than 10% of your dog's daily calories, with the rest coming from a complete, balanced food.

If you're doing a lot of training, don't simply add those treats on top — subtract them from the meals so the daily total stays the same. A few practical habits help:

• Use tiny, pea-sized treats; for most rewards, dogs care about the count, not the size.
• Reach for low-calorie options — a piece of their own kibble, or dog-safe veg like carrot or green beans.
• Account for dental chews and long-lasting chews; some carry surprising calories.

Adjusting Over Time

Feeding the right amount isn't a one-off calculation — it's a habit of checking and tweaking. Weigh your dog regularly and reassess body condition every few weeks. If your dog is drifting heavier or lighter than ideal, adjust the daily food by around 10% and then wait two to four weeks before judging the result. Small, patient changes beat dramatic swings.

Needs also shift with life: a neuter, a quieter winter, an injury, or simply getting older can all lower the right amount, while a growth spurt or a more active season raises it. Keep watching the trend rather than reacting to a single weigh-in.

Finally, know when this stops being a DIY job. Ongoing weight problems, a sudden change in appetite or weight, or any prescribed weight-loss, puppy-growth, or medical diet should go through your vet. A formula or an app can set the portion, but only your vet can rule out the health issues that sometimes hide behind a changing waistline.

Common Mistakes

• Treating the bag's chart as gospel. It's a generous, average starting point — adjust to the dog, not the table.
• Feeding for current weight, not ideal weight. If your dog is overweight, this just maintains the problem.
• Eyeballing portions. Scoops and handfuls creep upward; weigh the food.
• Forgetting treats and chews. They can quietly account for far more than 10% of the day's calories.
• Comparing foods by volume. A cup of one food can hold twice the calories of another — compare kcal, not scoops.
• Changing too much, too fast. Adjust by about 10% and reassess in a few weeks rather than slashing portions overnight.