How Much Should I Feed My Dog? Complete Feeding Guide by Weight and Age

"How much should I feed my dog?" is one of the most common questions veterinarians hear — and one of the most commonly answered incorrectly by dog food bags. The feeding guidelines printed on kibble packaging are starting estimates, not precise prescriptions. They're designed to work for the "average" dog, but your dog's ideal portion depends on their age, weight, breed, activity level, metabolism, and whether they need to gain, lose, or maintain weight.

This guide gives you a research-based framework for determining the right amount, then adjusting based on real-world results.

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The Basic Formula: Calories, Not Cups

Dog food brands list feeding amounts in cups, but cups vary wildly in calorie content between brands. A cup of one kibble might be 300 calories; a cup of another might be 500. That's why calories are the better unit of measurement.

Resting Energy Requirement (RER) is the baseline calories your dog needs to maintain basic body functions:

RER = 70 × (body weight in kg)^0.75

Then multiply by an activity factor:

Life Stage / Activity	Multiply RER by
Neutered adult, normal activity	1.6
Intact adult, normal activity	1.8
Light activity / senior	1.2-1.4
Moderate activity (1+ hr daily exercise)	2.0-3.0
High activity (working/sport dogs)	3.0-6.0
Weight loss	1.0
Puppy (4-12 months)	2.0-3.0
Puppy (under 4 months)	3.0

Example: A 30-kg (66-lb) neutered adult dog with normal activity:

• RER = 70 × 30^0.75 = 70 × 12.8 = 897 calories
• Daily needs = 897 × 1.6 = 1,435 calories per day

Then check the calorie content of your dog's food (listed on the bag as kcal/cup or kcal/kg) and divide accordingly.

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Quick Reference: Daily Feeding by Weight

For owners who want a simpler starting point, here are general daily feeding ranges for adult dogs of moderate activity eating standard kibble (~350-400 kcal/cup):

Dog Weight	Daily Amount (cups)	Daily Calories (approx.)
5 lbs (2.3 kg)	1/3 - 1/2 cup	200-275
10 lbs (4.5 kg)	1/2 - 3/4 cup	275-400
20 lbs (9 kg)	3/4 - 1.5 cups	400-700
30 lbs (14 kg)	1.5 - 2 cups	700-900
50 lbs (23 kg)	2 - 2.5 cups	900-1,200
70 lbs (32 kg)	2.5 - 3.5 cups	1,200-1,600
90 lbs (41 kg)	3.5 - 4.5 cups	1,600-2,000
100+ lbs (45+ kg)	4.5+ cups	2,000+

These are starting points. Adjust based on body condition (see below).

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How Many Meals Per Day?

Age	Meals Per Day
Under 4 months	3-4
4-12 months	2-3
Adults (1+ year)	2
Seniors (7+ years)	2-3 (smaller meals)

Two meals per day is the standard recommendation for adult dogs. It's more satisfying than one large meal, reduces the risk of bloat (particularly in deep-chested breeds), and provides more stable blood sugar levels throughout the day.

For dogs prone to bloat, also consider a slow feeder bowl to further reduce risk.

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The Body Condition Score: Your Best Feedback Tool

Forget the scale — the Body Condition Score (BCS) is how veterinarians actually assess whether your dog is at a healthy weight. It's a 1-9 scale:

Score 1-3 (Underweight):

• Ribs, spine, and hip bones clearly visible
• No palpable body fat
• Obvious abdominal tuck and waist

Score 4-5 (Ideal):

• Ribs easily felt with slight fat covering (not visible)
• Clear waist when viewed from above
• Abdominal tuck visible from the side
• Slight fat pad over the ribcage

Score 6-7 (Overweight):

• Ribs difficult to feel under fat layer
• Waist barely distinguishable
• Abdomen may appear rounded from the side

Score 8-9 (Obese):

• Ribs can't be felt under thick fat
• No waist visible
• Obvious abdominal distension
• Fat deposits on neck, limbs, and tail base

The goal is a BCS of 4-5. If your dog scores higher, reduce portions by 10-15% and reassess in 2 weeks. If lower, increase by the same margin. Small, gradual adjustments are more sustainable (and safer) than dramatic changes.

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Special Circumstances

Puppies

Puppies need more calories per pound than adults. Feed a puppy-specific formula and follow the elevated feeding frequency schedule above. Large breed puppies should eat large-breed-specific puppy food with controlled calcium levels.

Senior Dogs

Senior dogs (7+ years) typically need 20-30% fewer calories than young adults due to decreased activity and slower metabolism. But protein requirements may actually increase to maintain muscle mass. A senior-specific food with moderate calories and higher protein is ideal. See our senior dog food guide for recommendations.

Pregnant/Nursing Dogs

Nutritional needs increase dramatically — up to 2-3x normal caloric intake during peak lactation. Work with your vet for specific feeding plans during pregnancy and nursing.

Weight Loss

A safe weight loss rate for dogs is 1-2% of body weight per week. Reduce daily calories to 1.0x RER (the resting energy requirement without an activity multiplier). This creates a caloric deficit while still meeting basic nutritional needs. Always consult your vet before putting your dog on a diet — underlying conditions like hypothyroidism can cause weight gain that won't respond to simple calorie restriction.

Active and Working Dogs

Dogs with high daily activity — hiking partners, agility competitors, herding breeds in active work — may need 2-3x the calories of a sedentary pet. Increase portions or switch to a higher-calorie performance food.

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Treats Count Too

This is where most feeding plans fall apart. Treats should make up no more than 10% of daily calories. A single large Milk-Bone is about 40 calories. Three per day is 120 calories — which is significant for a small dog whose total daily budget might be 400 calories.

When using treats for training, adjust meal portions down to compensate. Or use pieces of your dog's regular kibble as training rewards — most dogs don't care that it's the same food; the ritual of receiving it is the reward.

For dental chews, account for those calories too. A Greenies Regular is about 70 calories — see our dental chew comparison for calorie counts by brand.

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Signs You're Feeding Too Much (or Too Little)

Too much:

• Weight gain over time
• Visible fat deposits
• Decreased energy and reluctance to exercise
• Loose stool (over-feeding is a common cause)

Too little:

• Visible ribs and spine
• Low energy and lethargy
• Coat appears dull or dry
• Constant food-seeking behavior
• For more on detecting diet issues, see signs your dog's food isn't working

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The Bottom Line

Start with the feeding guidelines on your dog's food bag, then adjust based on body condition, not the number on the scale. Check your dog's BCS monthly. If they're gaining weight, reduce portions by 10-15%. If they're losing weight, increase by the same amount. Factor in treats and dental chews as part of the daily calorie budget.

The right amount to feed your dog is the amount that keeps them at a healthy body condition — and that number will change over their lifetime as activity levels, metabolism, and health status evolve.

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