How Much Should I Feed My Dog?
Personalized daily feeding plan using the Waltham-style RER and MER framework. Supports dry food, wet food, raw diets, and mixed feeding without pushing any single brand or product line.
My Dogs integration
Load your saved dog profile or save the current weight and size for faster feeding checks next time.
Step 1 of 3
Tell us about your dog
Age
Breed size
Neuter or spay status
Body condition (BCS)
5/9Body condition score is a 1-9 scale where 4-5 is ideal. It is often more useful than the scale alone because it reflects rib coverage, waist shape, and visible fat storage.
Start with current weight and honest body condition. Feeding errors usually start here.
Why this calculator is different
This wizard separates body weight, activity, body condition, food density, and treat calories so the final portion feels usable in the real world, not just on a package label.
Live preview
Daily calories
646
kcal per day
Daily cups
1.6
cups
10.0 kg - Adult - Moderate - Neutered
Formula
RER = 70 x (kg)^0.75, then adjusted by MER, BCS, and treat budget.
Supports
Dry kibble, wet food, raw meals, and mixed feeding in the same workflow.
Outcome
You get calories, grams, cups, per-meal timing, and treat allowance together.
Complete the three steps, then open the full feeding report for calorie math, meal schedule, personalized notes, and a shareable plan card.
The science behind it
A useful dog food calculator has to start with energy, not with cups. Dog owners usually ask how much food to pour, but the real question is how many calories the dog should receive before those calories are converted into bowls, scoops, grams, or cans. The calculator on this page starts with resting energy requirement, or RER, which estimates the baseline calories a dog needs just to support essential body function at rest.
Once RER is estimated, the next job is to move from rest to real life. That means applying a maintenance energy factor that reflects life stage, neuter status, activity, and special conditions such as pregnancy, lactation, recovery, or weight loss. A sedentary neutered adult is not burning calories at the same rate as a young intact adult, and neither one should be fed like a lactating female or a working dog in heavy training.
The final step is the one most calculators either skip or oversimplify: converting calories into actual food amounts. A calorie target is only useful if it can be translated into cups for kibble, grams for wet or fresh food, or a mixed-feeding plan that counts both. That is why this page asks for the calorie density from the packaging rather than pretending all foods have the same energy per cup or per 100g.
This model is still a reference tool, not a diagnosis. Weight trends, stool quality, appetite, disease burden, medications, and veterinary guidance all matter. But a transparent calorie-first method is far stronger than guessing from a scoop or blindly following the broadest number on the side of a bag.
Formula snapshot
RER = 70 x (body weight in kg)^0.75
Example: a 10 kg dog
70 x (10)^0.75 = 70 x 5.62
RER = about 394 kcal/day
Then multiply by the correct MER factor for real life.
MER factors
| Life stage or condition | Factor |
|---|---|
| Puppy (weaning to 4 months) | RER x 3.0 |
| Puppy (4 months to adult) | RER x 2.0 |
| Neutered adult (sedentary) | RER x 1.2 |
| Intact adult (sedentary) | RER x 1.4 |
| Neutered adult (low active) | RER x 1.4 |
| Intact adult (low active) | RER x 1.6 |
| Neutered adult (moderate) | RER x 1.6 |
| Intact adult (moderate) | RER x 1.8 |
| Active adult | RER x 1.8-2.0 |
| Working dog | RER x 2.0+ |
| Senior dog | RER x 1.2-1.5 |
| Pregnant (early) | RER x 1.6 |
| Pregnant (late) | RER x 2.0 |
| Lactating | RER x 2.0-6.0 |
| Weight loss | RER x 0.8 |
| Weight gain | RER x 1.2-1.4 |
Why bag instructions are often wrong
Most feeding charts on packaging assume a broad, generic dog. They do not know your dog's actual body condition, whether treats are being handed out all day, or whether the dog was just neutered, moved into senior life, or started gaining weight after exercise dropped.
Feeding chart
This quick-reference chart uses the same RER-based calorie logic as the calculator and converts the result into cups using a standard 360 kcal per cup dry kibble benchmark. It is meant to be a starting point, not a replacement for weigh-ins and body-condition checks.
Download the chart as CSV if you want a quick spreadsheet reference for weight, calories, and cups.
| Weight | Sedentary | Moderate | Active | Senior |
|---|---|---|---|---|
| 2 kg | 141 kcal 0.4 cups | 188 kcal 0.5 cups | 235 kcal 0.7 cups | 153 kcal 0.4 cups |
| 5 kg | 281 kcal 0.8 cups | 374 kcal 1 cups | 468 kcal 1.3 cups | 304 kcal 0.8 cups |
| 10 kg | 472 kcal 1.3 cups | 630 kcal 1.8 cups | 787 kcal 2.2 cups | 512 kcal 1.4 cups |
| 15 kg | 640 kcal 1.8 cups | 854 kcal 2.4 cups | 1067 kcal 3 cups | 694 kcal 1.9 cups |
| 20 kg | 794 kcal 2.2 cups | 1059 kcal 2.9 cups | 1324 kcal 3.7 cups | 861 kcal 2.4 cups |
| 30 kg | 1077 kcal 3 cups | 1436 kcal 4 cups | 1795 kcal 5 cups | 1166 kcal 3.2 cups |
| 40 kg | 1336 kcal 3.7 cups | 1781 kcal 4.9 cups | 2227 kcal 6.2 cups | 1447 kcal 4 cups |
| 50 kg | 1579 kcal 4.4 cups | 2106 kcal 5.9 cups | 2632 kcal 7.3 cups | 1711 kcal 4.8 cups |
Reference only: neutered adult and senior benchmarks assume standard dry kibble at 360 kcal per cup. Puppies, pregnancy, lactation, working dogs, wet food, raw food, and mixed feeding need custom calculation.
Food type guide
The right feeding plan depends as much on food format as on body weight. Dry food is usually the most calorie-dense. Wet food offers volume and moisture. Raw or fresh plans are often portioned in grams. Mixed feeding is perfectly workable, but only if you split calories intentionally rather than adding one food on top of another.
Dry food
Dry Kibble
Typical density: 350-400 kcal per cup
Convenient, affordable, travel-friendly, and easier to portion once you know kcal per cup.
Very easy to overfeed by volume alone. Moisture is low, so water intake matters more.
Typical serving range: roughly 1 to 4 cups per day depending on body size and calorie target.
Wet food
Wet or Canned
Typical density: 80-100 kcal per 100g
Higher moisture, usually more appealing to picky eaters, and often easier for older dogs to chew.
Calories per tray or can vary widely. The portion looks visually larger, which can hide how expensive it becomes.
Typical serving range: roughly 200 to 400g per day for many mid-sized adults, but label density always wins.
Fresh feeding
Raw or Fresh
Typical density: 100-150 kcal per 100g
Can be highly palatable and less processed, with portioning that feels intuitive in grams.
Food safety, nutrient balance, and recipe consistency matter more than owners often assume.
Typical serving range: often about 2% to 3% of body weight by mass, but calorie density still matters.
Dry plus wet
Mixed Feeding
Works best when calories are split intentionally, not guessed
Flexible, practical, and often the easiest way to get the convenience of kibble with the palatability of wet food.
This is where owners most often double count calories. Each half of the bowl still needs to be measured.
The calculator handles a simple 50/50 calorie split so you can see dry cups and wet grams side by side.
Mixed feeding works well when you split calories, not when you eyeball half a bowl of kibble and then add a can on top. If a dog needs 700 kcal per day and you want a 50/50 split, allocate 350 kcal to dry food and 350 kcal to wet food, then convert each half using the correct density from each product.
Example: 350 kcal from dry food at 360 kcal per cup equals about 1 cup. Another 350 kcal from wet food at 95 kcal per 100g equals about 368g. The calculator above does this math automatically so the two halves add up to one complete plan instead of two overlapping ones.
Meal timing
Meal frequency changes with age, digestive tolerance, and breed type. One big meal is not automatically efficient. In many real homes it simply makes appetite control harder and bloat risk less forgiving for deeper-chested dogs.
Puppies under 6 months
Three to four meals per day is the safer default.
Small stomachs and fast growth make larger, infrequent meals harder to manage. Morning, midday, late afternoon, and early evening feedings usually work best.
Puppies 6-12 months
Two to three meals per day is usually enough.
This is the transition window toward an adult routine. Energy demand is still high, but the dog can usually tolerate more spacing between meals.
Adult dogs
Two meals per day is the most practical default.
Splitting the daily amount into morning and evening feedings gives better appetite control and is usually easier on large-breed digestion than one oversized meal.
Senior dogs
Two or three smaller meals often work best.
Older dogs can do better with slightly smaller, more digestible meal events, especially when appetite, energy, or dental comfort changes.
Mistakes to avoid
Most feeding mistakes are not dramatic. They are small, repeated inaccuracies: scooping by habit, never counting treats, never recalculating after weight gain, and assuming every label means the same thing. Those small misses add up.
Mistake #1
Following the bag instructions blindly
Bag charts assume an average dog. Neutered, sedentary, or overweight dogs can be overfed quickly if you never adjust.
Mistake #2
Not counting treats inside the daily budget
Treats should usually stay at or below 10% of total calories. If you ignore them, the rest of the plan stops being accurate.
Mistake #3
Scooping by volume without knowing kcal per cup
Different kibbles can vary dramatically. Always look for Metabolizable Energy or a clear kcal-per-cup listing.
Mistake #4
Feeding one huge meal to a large or giant breed
Deep-chested dogs usually benefit from split meals. Two smaller feedings are more conservative than one oversized portion.
Mistake #5
Ignoring body condition score
The scale alone misses important context. Recheck ribs, waistline, and fat cover so the calorie plan reflects the dog you actually have.
Mistake #6
Switching foods too quickly
Transition over 7-10 days when possible. Digestive upset can make a correct calorie target look like the wrong diet.
Mistake #7
Never recalculating after weight or routine changes
New food, new exercise, neutering, aging, or weight drift all change the answer. Monthly weigh-ins keep the math honest.
FAQ
These questions target the follow-up searches owners make after they ask how much food a dog should eat. The goal is to answer cups, calories, puppies, seniors, wet vs dry, and weight-management concerns on the same page.
Daily intake depends on body weight, life stage, activity level, body condition, and the calorie density of the food in the bowl. A better approach is to estimate resting energy requirement, multiply it by an appropriate maintenance factor, then convert calories into cups or grams using the label on the actual food you feed. That is why the same 10 kg dog can need very different portion sizes on dry kibble, wet food, or a fresh-food plan.
Cups only make sense when you know the food's kcal per cup. Many dry foods land around 350 to 400 kcal per cup, but some are far outside that range. A 10 kg adult dog can easily land between roughly 1.3 and 2 cups per day depending on energy output, neuter status, treats, and the exact kibble. Measuring by grams is usually more reliable than scooping by volume.
Puppies generally need more calories per kilogram than adult dogs because growth is expensive. Very young puppies can need around three times resting energy, while older puppies often move closer to two times resting energy as they approach adult size. They also do better on more frequent meals. That is why the calculator breaks puppy feeding into separate early and later growth stages instead of treating all puppies the same.
Both can work if the diet is complete and balanced. Dry kibble is convenient, more calorie-dense, and easy to portion, while wet food is more moisture-rich and can be easier for picky or older dogs to accept. The stronger question is not which format is morally better, but whether you know the calorie density and portion size. Owners often overfeed simply because they switch foods without recalculating.
Senior dogs often need steadier calories, not automatically tiny portions. A realistic senior plan starts with RER, then uses a lower activity-adjusted maintenance factor than a younger adult with the same weight. From there you still need to look at body condition, muscle retention, dental comfort, and whether smaller, easier-to-digest meals make more sense than one large meal.
Weight-loss plans should usually be calculated from an ideal or goal weight rather than the dog's current heavier body weight. A common framework is to use a more conservative maintenance multiplier, keep treats under tight control, and recheck the scale and body condition every one to two weeks. The goal is not dramatic restriction. The goal is controlled, sustainable change that still protects muscle mass and routine.
A common everyday benchmark is around 50 to 60 ml of water per kilogram of body weight per day, though weather, exercise, sodium intake, and food moisture all matter. Dogs eating dry food often need more free water than dogs eating wet or fresh food because the meal itself contributes little moisture. Sudden changes in drinking behavior should be discussed with a veterinarian.
Yes, but pregnancy should never be treated like ordinary adult maintenance feeding. Early pregnancy usually needs only a modest increase, while late pregnancy and lactation can push energy demand much higher. That is why the calculator includes special-condition overrides instead of pretending one adult factor works across the entire reproductive cycle.
Recalculate whenever your dog's weight changes meaningfully, when activity shifts, after neutering or spaying, when changing foods, or when moving from puppy to adult or adult to senior feeding. Monthly weigh-ins are a strong habit because subtle weight drift is easier to fix early than after months of overfeeding.
Appetite alone does not prove underfeeding. Some dogs are intensely food-motivated even at a healthy body condition. If weight and body condition stay stable, the answer may be more meal volume, more meal frequency, slower feeders, or lower-calorie add-ins rather than simply raising calories. If your dog is losing weight, scavenging unusually, or seems genuinely unwell, the next step is medical evaluation rather than guesswork.
Next steps
Feeding plans work best when they connect to calorie logic, healthy body weight, and realistic exercise output. These three calculators are the strongest follow-up tools.
Dog Calorie Calculator
Get daily kcal targets from resting energy requirement and maintenance energy formulas.
Dog Weight Calculator
Compare your dog to healthy breed ranges, body condition scoring, and realistic goal-weight timelines.
Dog Exercise Calculator
Plan the right amount of movement for puppies, adults, seniors, and higher-drive working breeds.
References
These sources support the calorie framework, nutrition standards, and feeding logic used throughout the page.