Every dog owner has asked the same question: how much should I be feeding my dog? The answer is far more nuanced than the scoop-size printed on a bag of kibble. How much your dog eats each day depends primarily on three factors — body weight, activity level, and life stage — not just breed size alone. A highly active Border Collie weighing 50 lbs may need nearly as many calories as a sedentary Labrador 10 lbs heavier, and a growing puppy requires a completely different feeding strategy than a senior Chihuahua.
This guide gives you the data you need: a science-based calorie calculation formula, comprehensive feeding charts by weight and breed, and practical guidance on adjusting portions as your dog's needs change throughout life.
How to Calculate Your Dog's Daily Food Amount
The gold-standard method veterinarians use to determine daily calorie requirements starts with one equation: the Resting Energy Requirement (RER) formula.
RER = 30 × (body weight in kg) + 70
This gives you the number of kilocalories your dog needs at complete rest — essentially the energy required to maintain basic bodily functions like breathing, circulation, and body temperature. But dogs don't sit still all day. To get the actual daily calorie target, you multiply RER by an activity/life-stage factor:
| Life Stage / Condition | Multiplier |
|---|---|
| Neutered adult (normal activity) | 1.6 × RER |
| Intact adult (normal activity) | 1.8 × RER |
| Weight loss plan | 1.0 × RER |
| Light exercise / active | 2.0 × RER |
| Moderate to heavy exercise | 3.0 × RER |
| Puppy (under 4 months) | 3.0 × RER |
| Puppy (4–12 months) | 2.0 × RER |
| Senior / sedentary | 1.2–1.4 × RER |
Quick example: A 22.7 kg (50 lb) neutered Labrador at moderate activity:
- RER = 30 × 22.7 + 70 = 751 kcal
- Daily calories = 1.6 × 751 = 1,202 kcal/day
To convert calories into cups of dry food, divide by the calorie density of the food. A standard kibble averages about 350 kcal per cup (approximately 3.5 kcal per gram). Always check your specific dog food label, as calorie density can range from 300 to 500+ kcal per cup depending on the brand and formula.
Key takeaway: The RER formula accounts for your individual dog's weight — not just breed labels — making it far more accurate than generic feeding charts.
Daily Calorie Needs by Weight
The table below shows estimated daily calorie requirements for neutered adult dogs at normal (low-to-moderate) activity levels, using the 1.6 × RER multiplier.
| Body Weight (lbs) | Body Weight (kg) | Daily Calories (kcal) | Dry Food (cups/day)* | Dry Food (grams/day)* |
|---|---|---|---|---|
| 5 lbs | 2.3 kg | ~190 kcal | ~½ cup | ~140 g |
| 10 lbs | 4.5 kg | ~328 kcal | ~¾ cup | ~210 g |
| 20 lbs | 9 kg | ~570 kcal | ~1⅔ cups | ~510 g |
| 30 lbs | 13.6 kg | ~765 kcal | ~2⅛ cups | ~665 g |
| 50 lbs | 22.7 kg | ~1,201 kcal | ~3½ cups | ~1,045 g |
| 70 lbs | 31.8 kg | ~1,638 kcal | ~4⅔ cups | ~1,425 g |
| 90 lbs | 40.8 kg | ~1,975 kcal | ~5⅔ cups | ~1,775 g |
*Based on standard dry kibble at 350 kcal per cup (approximately 3.5 kcal/g). Actual amounts vary by food brand and calorie density. Always check the feeding guide on your dog food packaging.
These numbers represent a baseline. A working German Shepherd or a competitive agility Border Collie may need significantly more, while an overweight senior Pug may need considerably less. The weight-based chart is most useful as a starting point — use it alongside body condition scoring to fine-tune portions.
Dog Food Amount Chart by Breed Size
Below, breed-specific feeding amounts are organized by size category. All values assume a neutered/spayed adult dog with low-to-moderate activity, fed a standard dry kibble averaging 350 kcal per cup.
Toy Breeds (Under 4 kg / 9 lbs)
| Breed | Adult Weight | Daily Calories | Dry Food (cups/day) | Dry Food (grams/day) |
|---|---|---|---|---|
| Chihuahua | 1.5–3 kg | 115–160 kcal | ⅓–½ cup | 95–145 g |
| Pomeranian | 2–3.5 kg | 130–175 kcal | ⅓–½ cup | 95–145 g |
| Yorkshire Terrier | 1.8–3.2 kg | 125–165 kcal | ⅓–½ cup | 95–145 g |
| Shih Tzu | 4–7.3 kg | 190–280 kcal | ½–¾ cup | 145–215 g |
| Maltese | 1.8–3 kg | 125–160 kcal | ⅓–½ cup | 95–145 g |
Toy breeds have fast metabolisms relative to their size but tiny stomachs, which is why their per-kilogram calorie needs are actually higher than large breeds. Feeding multiple small meals per day (2–3) rather than one large meal helps maintain stable blood sugar, especially in breeds prone to hypoglycemia.
Small Breeds (4–15 kg / 9–33 lbs)
| Breed | Adult Weight | Daily Calories | Dry Food (cups/day) | Dry Food (grams/day) |
|---|---|---|---|---|
| French Bulldog | 8–14 kg | 310–470 kcal | ¾–1⅓ cups | 215–385 g |
| Cavalier King Charles Spaniel | 5–8 kg | 230–310 kcal | ⅔–¾ cup | 190–215 g |
| Pug | 6–8 kg | 250–310 kcal | ⅔–¾ cup | 190–215 g |
| Dachshund | 4–15 kg | 190–470 kcal | ½–1⅓ cups | 145–385 g |
| Boston Terrier | 5–11 kg | 220–380 kcal | ⅔–1 cup | 190–290 g |
| Miniature Schnauzer | 5–9 kg | 220–340 kcal | ⅔–1 cup | 190–290 g |
Small breeds are especially prone to obesity, partly because even a small overfeeding margin represents a significant percentage of their daily intake. For breeds like the French Bulldog and Pug, keeping calories in check is one of the most impactful things you can do for joint health and longevity.
Medium Breeds (15–35 kg / 33–77 lbs)
| Breed | Adult Weight | Daily Calories | Dry Food (cups/day) | Dry Food (grams/day) |
|---|---|---|---|---|
| Beagle | 9–14 kg | 340–470 kcal | 1–1⅓ cups | 290–385 g |
| Border Collie | 14–25 kg | 470–700 kcal | 1⅓–2 cups | 385–575 g |
| Australian Shepherd | 18–30 kg | 570–780 kcal | 1⅔–2¼ cups | 475–645 g |
| Cocker Spaniel | 9–14 kg | 340–470 kcal | 1–1⅓ cups | 290–385 g |
| Bulldog | 18–23 kg | 600–700 kcal | 1¾–2 cups | 505–575 g |
| Staffordshire Bull Terrier | 11–17 kg | 400–530 kcal | 1⅛–1½ cups | 325–435 g |
Medium breeds show the widest calorie range within the group — a Beagle at the low end of its weight range needs barely half the calories of an Australian Shepherd at the high end. Working and herding breeds like the Border Collie and Australian Shepherd will sit at the upper end of their range when given adequate daily exercise.
Large Breeds (35–65 kg / 77–143 lbs)
| Breed | Adult Weight | Daily Calories | Dry Food (cups/day) | Dry Food (grams/day) |
|---|---|---|---|---|
| Labrador Retriever | 25–36 kg | 700–930 kcal | 2–2⅔ cups | 575–765 g |
| Golden Retriever | 25–34 kg | 700–880 kcal | 2–2½ cups | 575–720 g |
| German Shepherd | 22–40 kg | 660–1,010 kcal | 1⅞–2⅞ cups | 540–835 g |
| Siberian Husky | 16–27 kg | 530–730 kcal | 1½–2⅛ cups | 435–600 g |
| Rottweiler | 36–61 kg | 930–1,410 kcal | 2⅔–4 cups | 765–1,155 g |
| Doberman | 27–45 kg | 730–1,100 kcal | 2⅛–3⅛ cups | 610–900 g |
| Boxer | 23–32 kg | 670–820 kcal | 1⅞–2⅓ cups | 540–670 g |
Large breeds benefit from controlled feeding — especially during the growth phase. Rapid growth from overfeeding in puppies of large and giant breeds is strongly associated with orthopedic conditions like hip dysplasia. Splitting daily portions into two meals also reduces the risk of bloat (gastric dilatation-volvulus), a life-threatening emergency common in deep-chested breeds like the Great Dane and German Shepherd.
Giant Breeds (Over 45 kg / 100 lbs)
| Breed | Adult Weight | Daily Calories | Dry Food (cups/day) | Dry Food (grams/day) |
|---|---|---|---|---|
| Great Dane | 50–79 kg | 1,200–1,800 kcal | 3⅓–5 cups | 965–1,445 g |
| Saint Bernard | 54–82 kg | 1,300–1,900 kcal | 3¾–5⅓ cups | 1,085–1,540 g |
| Newfoundland | 45–68 kg | 1,100–1,600 kcal | 3⅛–4½ cups | 900–1,300 g |
| Mastiff (English) | 54–100 kg | 1,300–2,300 kcal | 3¾–6½ cups | 1,085–1,875 g |
| Bernese Mountain Dog | 32–52 kg | 820–1,250 kcal | 2⅓–3½ cups | 675–1,015 g |
Giant breeds have a lower metabolic rate per kilogram than smaller dogs, so their calorie-per-kg needs are actually lower. However, because their absolute body weight is so high, total daily intake remains substantial. Giant breed puppies grow slowly by design — feeding a large breed puppy formula with controlled calcium-to-phosphorus ratio is essential until they reach 18–24 months of age.
Adjusting for Activity Level, Age & Life Stage
The breed charts above assume a neutered adult with moderate activity. Real life rarely fits that description perfectly. Here is how to adjust.
Activity level adjustments. A working farm dog, agility competitor, or hunting companion can easily require 2–3× their maintenance calories. Conversely, a senior dog with arthritis who naps most of the day may need only 1.2 × RER. Use the multiplier table above as your starting point and monitor body condition weekly for the first few weeks.
Puppies. Growing puppies need more calories per kilogram than adult dogs — typically 2.0–3.0 × RER depending on age. The first four months are the period of most rapid growth, requiring the highest multiplier. Use our Puppy Weight Calculator to track growth progress and ensure your puppy is on a healthy trajectory. See our companion Puppy Feeding Guide for meal frequency, transition schedules, and large-breed puppy nutrition tips.
Senior dogs. Dogs over 7 years generally have a slower metabolism and reduced activity. Reducing daily intake by 10–20% compared to adult maintenance helps prevent age-related weight gain. However, senior dogs with certain conditions (cancer, chronic infection) may actually need more calories — consult your veterinarian.
Pregnant and nursing dogs. Energy requirements peak during late pregnancy (weeks 6–9) and lactation, reaching 2–4 × RER. Feed a high-quality puppy/growth diet during this period and offer free-choice feeding during nursing.
Weight management. If your dog needs to lose weight, use 1.0 × RER as the daily calorie target. For every pound of ideal body weight lost, recalculate. The goal is a gradual loss of 1–2% of body weight per week.
Signs You're Overfeeding or Underfeeding
Calorie charts provide estimates — your dog's body tells the real story. The most reliable way to assess whether your feeding amount is correct is the Body Condition Score (BCS), a standardized 1–9 scale used by veterinarians worldwide.
Ideal body condition (BCS 4–5/9):
- Ribs are easily palpable under a thin layer of fat
- Visible waist when viewed from above
- Abdominal tuck when viewed from the side
Signs of overfeeding (BCS 6–9/9):
- Ribs difficult to feel; thick fat covering
- No visible waist; back appears broadened
- Fat deposits over the spine and base of the tail
- Reluctance to exercise, panting, lethargy
Signs of underfeeding (BCS 1–3/9):
- Ribs, spine, and hip bones visibly prominent
- Severe abdominal tuck; "hourglass" appearance from above
- Muscle wasting; lack of energy
- Dull coat; poor skin elasticity
Use our BCS Assessment tool to visually evaluate your dog's body condition and receive personalized feeding recommendations. BCS should be checked monthly — even small, gradual weight changes can accumulate significantly over a year.
Frequently Asked Questions
1. How much should I feed my dog per day?
The amount depends on your dog's weight, activity level, and life stage. As a general rule, a neutered adult dog at ideal weight needs approximately 30 × (body weight in kg) + 70 calories at rest, multiplied by 1.6 for normal activity. For a 50 lb dog, this equals roughly 1,200 kcal per day, or about 3½ cups of standard dry kibble (at 350 kcal/cup). Source: Purina — Feeding Your Adult Dog; WSAVA Global Nutrition Committee
2. How many times a day should I feed my dog?
Most adult dogs do well with two meals per day — morning and evening. Puppies under 6 months need 3–4 meals daily. Toy breeds are especially prone to hypoglycemia and benefit from more frequent, smaller meals. Free-choice feeding (leaving food out all day) is generally not recommended as it encourages overeating. Source: AKC — How Often Should You Feed Your Dog
3. Should I feed my large breed puppy regular puppy food?
No. Large breed puppies (those expected to exceed 25 kg / 55 lbs as adults) should be fed a large breed puppy formula. These diets have controlled calorie density and a carefully balanced calcium-to-phosphorus ratio (approximately 1:1 to 1.3:1) to prevent skeletal abnormalities associated with rapid growth. Source: WSAVA Global Nutrition Committee — Feeding Puppies
4. How do I know if my dog is at a healthy weight?
Use the Body Condition Score (BCS) system. A dog at ideal weight will have ribs you can feel but not see, a visible waist from above, and an abdominal tuck from the side. BCS 4 or 5 on a 9-point scale is ideal. You can use PawScale's BCS Assessment tool for a visual guide. Source: Purina — Body Condition Score System; Association for Pet Obesity Prevention
5. Can I feed my dog a homemade diet instead of commercial food?
Homemade diets can be fed, but they must be nutritionally complete and balanced — which is extremely difficult to achieve without professional guidance. A study published in the Journal of the American Veterinary Medical Association found that the vast majority of homemade recipes found online contain at least one nutritional deficiency. If choosing this route, work with a board-certified veterinary nutritionist. Source: Purina — Homemade Dog Food; JAVMA — Evaluation of Homemade Dog Food Recipes
6. How do I switch my dog to a new food?
Transition gradually over 7–10 days. Start with 75% old food and 25% new food, then increase the proportion of new food every 2–3 days. A sudden switch can cause gastrointestinal upset including diarrhea and vomiting. Dogs with sensitive stomachs may need a slower transition over 2 weeks. Source: AKC — How to Switch Your Dog's Food; Purina — Transitioning Your Dog's Food
7. Does my neutered dog really need fewer calories?
Yes. After neutering or spaying, a dog's metabolic rate typically decreases by approximately 20–30%. This is why the multiplier for neutered adults (1.6 × RER) is lower than for intact adults (1.8 × RER). Without adjusting food intake downward after surgery, many dogs will gradually gain weight over the following months. Source: WSAVA Global Nutrition Committee; Purina — Impact of Neutering on Canine Nutrition
Explore Your Breed
These feeding charts cover 30 popular breeds — but each breed has unique nutritional considerations beyond just calories. From breed-specific health risks to lifespan data and temperament traits, our breed profiles give you the full picture.
Browse all breeds on PawScale →
References
- National Research Council (NRC). Nutrient Requirements of Dogs and Cats. The National Academies Press, 2006.
- Purina. "Feeding Your Adult Dog: The Complete Guide." purina.com/articles/dog/feeding/nutrition/feeding-your-adult-dog
- WSAVA Global Nutrition Committee. "Feeding Dogs and Cats — General Guidelines." wsava.org/wp-content/uploads/2020/01/Feeding-Dogs-Cats-General-Guidelines.pdf
- Association for Pet Obesity Prevention. "Body Condition Score Chart." petobesityprevention.org
- American Kennel Club (AKC). "How Often Should You Feed Your Dog?" akc.org/expert-advice/nutrition/how-often-should-you-feed-your-dog/
- Laflamme DP. "Development and validation of a body condition score system for dogs." Canine Practice 22(4): 10–15, 1997.
- Freeman LM, et al. "Evaluation of recipes for home-prepared diets for dogs and cats with cancer." JAVMA 238(11): 1464–1468, 2011.
Last reviewed: August 2026
Disclaimer: This article provides general guidance and is not a substitute for professional veterinary advice. Always consult your veterinarian before making significant changes to your dog's diet, especially for dogs with health conditions, puppies, pregnant/nursing dogs, or senior dogs.