How Much to Feed Your Dog by Weight
A complete, vet-reviewed feeding guide with exact amounts by weight, life stage, and activity level — plus how to tell if you're overfeeding or underfeeding.
One of the most common questions dog owners ask — and one of the most important to get right. Overfeeding is the leading cause of obesity in dogs, which shortens lifespan and causes joint disease, diabetes, and cancer. Underfeeding causes muscle loss, immune deficiency, and stunted growth in puppies. This guide gives you precise starting amounts based on your dog's weight, then explains how to adjust based on what you actually see in your dog's body condition.
The Key Principle: Feed to Body Condition, Not to Bowl
Feeding guidelines on dog food packaging are starting points, not prescriptions — they are typically calculated for moderately active unneutered dogs and are often set generously (which benefits the food manufacturer). Your dog's actual needs depend on their age, breed, activity level, whether they are neutered, and their individual metabolism. Use the tables below as a starting point, then adjust every 4 weeks based on body condition score.
Daily Calorie Needs by Weight
These are approximate daily calorie (kcal) requirements for healthy, moderately active adult dogs. Multiply by the appropriate factor for your dog's specific situation (see activity multipliers below).
| Weight | Daily kcal | Example breeds |
|---|---|---|
| 2 kg (4 lbs) | 140 – 175 kcal | Chihuahua, Yorkshire Terrier |
| 5 kg (11 lbs) | 290 – 360 kcal | Shih Tzu, Pomeranian |
| 10 kg (22 lbs) | 490 – 615 kcal | French Bulldog, Cocker Spaniel |
| 15 kg (33 lbs) | 670 – 840 kcal | Border Collie, Shetland Sheepdog |
| 20 kg (44 lbs) | 850 – 1060 kcal | Labrador, Boxer |
| 25 kg (55 lbs) | 1010 – 1265 kcal | Golden Retriever, Dalmatian |
| 30 kg (66 lbs) | 1175 – 1470 kcal | German Shepherd, Rottweiler |
| 40 kg (88 lbs) | 1490 – 1865 kcal | Great Dane (young adult) |
| 50 kg (110 lbs) | 1800 – 2250 kcal | Saint Bernard, Mastiff |
⚠ These figures assume a moderately active neutered adult dog at an ideal body weight. To calculate for your dog: find the base kcal for their ideal body weight (not current weight if overweight), then multiply by the activity factor below.
Activity & Life Stage Multipliers
Multiply the base calorie figure by the factor that best matches your dog:
Dry Food (Kibble) Feeding Amounts
These are approximate daily amounts for standard adult dry dog food (approximately 350–400 kcal per 100g). Always check the specific kcal density of your food — it varies significantly between brands.
| Dog weight | Grams/day | Approx. cups |
|---|---|---|
| 2 kg | 35 – 50 g | ¼ cup |
| 5 kg | 75 – 100 g | ½ – ¾ cup |
| 10 kg | 130 – 175 g | ¾ – 1¼ cups |
| 15 kg | 175 – 240 g | 1¼ – 1¾ cups |
| 20 kg | 220 – 300 g | 1½ – 2 cups |
| 25 kg | 265 – 360 g | 2 – 2½ cups |
| 30 kg | 310 – 420 g | 2¼ – 3 cups |
| 40 kg | 390 – 530 g | 2¾ – 3¾ cups |
| 50 kg | 470 – 640 g | 3¼ – 4½ cups |
⚠ Always use a kitchen scale — cup measurements are highly inaccurate (can vary by 20–30% depending on how the cup is filled). Weigh the daily amount in the morning and use throughout the day.
Wet Food Feeding Amounts
Wet food is roughly 75–80% water compared to 10% in dry food, making it much lower in calorie density per gram. Most wet foods provide 80–100 kcal per 100g (compared to 350–400 kcal per 100g for dry).
| Dog weight | Grams/day | Approx. cans |
|---|---|---|
| 2 kg | 130 – 190 g | ½ small can |
| 5 kg | 280 – 400 g | 1 small can |
| 10 kg | 480 – 680 g | 1½ – 2 small cans |
| 15 kg | 660 – 930 g | 2 – 3 small cans |
| 20 kg | 840 – 1180 g | 2½ – 3½ small cans |
| 25 kg | 1000 – 1400 g | 3 – 4 small cans |
| 30 kg | 1160 – 1630 g | 3½ – 5 small cans |
⚠ Pure wet food diets are expensive and bulky for large dogs. Many owners use a mix — replacing 25–50% of dry food calories with wet food improves palatability and hydration without a dramatic cost increase.
Puppy Feeding Guide
Puppies have very different needs from adults — they need more calories per kg of body weight and specific nutrient ratios for bone and muscle development. Always feed a food specifically formulated for puppies or 'all life stages.'
Follow puppy food label — typically 2–3× adult amount per kg of body weight
Reduce to 3× adult amount per kg — adjust based on growth rate and BCS
Transition to adult amounts — small breeds mature faster
Continue puppy food — large breeds need extended puppy nutrition for bone growth
⚠ Large and giant breed puppies should NOT be fed for maximum growth rate — controlled growth prevents developmental bone diseases. Do not supplement with calcium unless specifically prescribed by your vet.
How Many Times Per Day to Feed
Small stomachs, high energy needs, blood sugar regulation
Still growing rapidly, building consistent routine
Reduces hunger, improves digestion, lowers bloat risk
Easier digestion, helps maintain appetite and metabolism
Large single meals are a risk factor for gastric dilatation-volvulus
Check Your Dog's Body Condition Score
Upload a photo of your dog to get an instant AI body condition score — the most reliable way to know if your current feeding amount is right.
Scan your pet nowHow to Adjust Portions Over Time
Weigh your dog monthly
Use a bathroom scale — weigh yourself holding your dog, then subtract your weight. Record results. Compare month to month.
Body condition score every 4 weeks
Run your hands along the ribcage. Ribs should be felt easily but not seen. Visible ribs = underfed. Cannot feel ribs = overfed. Adjust portions by 10% in the appropriate direction.
Adjust treats into the daily total
Treats count as calories. If your dog receives treats during training, reduce their meal portions accordingly. Treats should not exceed 10% of daily calorie intake.
Reassess after neutering
Neutering reduces calorie needs by approximately 20–30%. Many owners continue feeding the same amount post-surgery and their dog gradually gains weight. Reduce portions at the time of neutering.
Seasonal adjustments
Dogs that spend more time outdoors in winter burn more calories staying warm. Very active dogs in summer may eat less due to heat. Adjust portions seasonally if body condition changes.
Signs You Are Overfeeding
- •Cannot feel ribs without pressing firmly
- •No visible waist when viewed from above
- •Belly hangs lower than chest when viewed from the side
- •Fat deposits at base of tail and behind shoulders
- •Weight gain over consecutive monthly measurements
- •Dog consistently leaves food in the bowl (may indicate overfeeding or low palatability)
Signs You Are Underfeeding
- •Ribs clearly visible without touching
- •Spine and hip bones prominent
- •Waist severely pinched when viewed from above
- •Always hungry — persistent food-seeking behavior
- •Weight loss over consecutive measurements
- •Reduced energy, poor coat quality
Frequently Asked Questions
How do I calculate how much to feed my dog?▾
Start with your dog's ideal body weight (not current weight if overweight). Find the base calorie requirement for that weight in the table above. Multiply by the activity factor for your dog's lifestyle. Then divide the total kcal by the kcal per gram of your specific food (listed on the packaging or manufacturer website) to get daily grams. Weigh the food rather than measuring cups.
My dog always seems hungry — am I underfeeding?▾
Not necessarily. Many dogs will eat eagerly regardless of how much they have been fed — food motivation does not equal hunger. The most reliable indicator is body condition score, not appetite behavior. If your dog has a BCS of 4–5 and maintains their weight, they are getting enough food even if they act hungry. If BCS is below 4, gradually increase portions by 10% every 2 weeks.
Should I feed my dog once or twice a day?▾
Twice daily is recommended for most adult dogs. Feeding once daily can cause hunger and digestive stress, and is a risk factor for bloat (GDV) in large, deep-chested breeds. For small dogs prone to hypoglycemia (low blood sugar), twice daily or even three times daily may be beneficial.
How do I switch dog foods without causing stomach upset?▾
Transition gradually over 7–10 days: Days 1–3: 75% old food, 25% new food. Days 4–6: 50% each. Days 7–9: 25% old, 75% new. Day 10+: 100% new food. A slower transition of 2–3 weeks is recommended for dogs with sensitive stomachs or known GI conditions.
Do neutered dogs need less food?▾
Yes — neutering reduces calorie needs by approximately 20–30% in both male and female dogs. This is because sex hormones influence metabolism. If you continue feeding the same amount post-surgery, weight gain is likely. Reduce portions by approximately 20% at the time of neutering and monitor BCS monthly.
This article is for educational purposes only. Always consult a licensed veterinarian for medical advice specific to your pet.