Recommended Daily Calorie Target
0 kcal/day
This is your pet's estimated daily energy requirement (DER) based on their current condition and activity level.
Dog & Cat Calorie Calculator - How Many Calories Should My Pet Eat?
Calculate exactly how many calories your dog or cat needs per day using veterinary-approved formulas. Our pet calorie needs calculator provides personalized feeding recommendations, portion sizes, and treat allowances based on your pet's weight, age, and activity level.
Gold-standard allometric formula (70 × BW⁰·⁷⁵)
Body Condition Score assessment
Automatic portion calculator
10% treat budget calculator
Step 1: Select Your Pet Type
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Selected: 5 - Ideal
Feel your pet's ribs - they should be easily felt but not visible. View guide for detailed assessment.
Feel your pet's ribs - they should be easily felt but not visible. View guide for detailed assessment.
Pet Feeding Chart by Weight - Quick Reference Guide
These charts provide general calorie guidelines for average adult pets at ideal weight. Use our calculator above for personalized recommendations.
Dog Feeding Chart - Daily Calorie Needs
| Dog Weight | Sedentary/Senior | Typical Adult | Active/Working | Puppy (4-12 mo) |
|---|---|---|---|---|
| 10 lbs (4.5 kg) | 200-275 kcal | 275-350 kcal | 400-550 kcal | 550-650 kcal |
| 20 lbs (9 kg) | 325-450 kcal | 450-590 kcal | 650-900 kcal | 900-1100 kcal |
| 30 lbs (13.6 kg) | 450-600 kcal | 600-775 kcal | 875-1200 kcal | 1200-1500 kcal |
| 40 lbs (18 kg) | 550-750 kcal | 750-950 kcal | 1100-1500 kcal | 1500-1900 kcal |
| 50 lbs (22.7 kg) | 650-875 kcal | 875-1125 kcal | 1300-1750 kcal | 1750-2250 kcal |
| 60 lbs (27 kg) | 750-1000 kcal | 1000-1275 kcal | 1475-2000 kcal | 2000-2550 kcal |
| 70 lbs (31.8 kg) | 850-1125 kcal | 1125-1425 kcal | 1650-2250 kcal | 2250-2850 kcal |
| 80 lbs (36 kg) | 925-1225 kcal | 1225-1575 kcal | 1825-2450 kcal | 2450-3150 kcal |
| 90 lbs (41 kg) | 1025-1350 kcal | 1350-1700 kcal | 2000-2700 kcal | 2700-3400 kcal |
| 100 lbs (45 kg) | 1100-1450 kcal | 1450-1850 kcal | 2150-2900 kcal | 2900-3700 kcal |
*Neutered adults typically need 10-15% fewer calories. Giant breeds may need additional calories.
Cat Feeding Chart - Daily Calorie Needs
| Cat Weight | Indoor/Sedentary | Typical Adult | Active/Outdoor | Kitten |
|---|---|---|---|---|
| 6 lbs (2.7 kg) | 150-170 kcal | 170-210 kcal | 210-250 kcal | 300-375 kcal |
| 8 lbs (3.6 kg) | 180-200 kcal | 200-250 kcal | 250-300 kcal | 375-450 kcal |
| 10 lbs (4.5 kg) | 200-230 kcal | 230-280 kcal | 280-350 kcal | 450-550 kcal |
| 12 lbs (5.4 kg) | 225-260 kcal | 260-320 kcal | 320-400 kcal | 500-625 kcal |
| 14 lbs (6.4 kg) | 250-285 kcal | 285-350 kcal | 350-440 kcal | 575-700 kcal |
| 16 lbs (7.3 kg) | 275-310 kcal | 310-385 kcal | 385-480 kcal | 625-775 kcal |
| 18 lbs (8.2 kg) | 295-335 kcal | 335-415 kcal | 415-520 kcal | 675-850 kcal |
| 20 lbs (9 kg) | 315-360 kcal | 360-440 kcal | 440-550 kcal | 725-900 kcal |
*Neutered cats typically need 14% fewer calories. Indoor cats need fewer calories than outdoor cats.
Common Pet Treat Calorie Guide
| Treat Type | Portion Size | Calories | Equivalent for 20lb Dog | Equivalent for 10lb Cat |
|---|---|---|---|---|
| Commercial Dog Biscuit | 1 medium biscuit | 40-50 kcal | ~8% of daily needs | ~20% of daily needs |
| Dental Chew | 1 medium chew | 70-100 kcal | ~15% of daily needs | ~40% of daily needs |
| Peanut Butter | 1 tablespoon | 95 kcal | ~16% of daily needs | ~38% of daily needs |
| Plain Chicken | 1 oz cooked | 50 kcal | ~8% of daily needs | ~20% of daily needs |
| Baby Carrot | 1 medium | 4 kcal | ~1% of daily needs | ~2% of daily needs |
| Apple Slice | 1 slice | 10 kcal | ~2% of daily needs | ~4% of daily needs |
| Cat Treats | 5 pieces | 10-15 kcal | ~2% of daily needs | ~6% of daily needs |
| Freeze-Dried Meat | 5 pieces | 25 kcal | ~4% of daily needs | ~10% of daily needs |
Remember: Treats should not exceed 10% of your pet's daily calorie intake.
Understanding Your Pet's Calorie Needs
The Science Behind the Calculator
This calculator uses the gold-standard allometric formula recommended by veterinary nutritionists:
RER (kcal/day) = 70 × (Body Weight in kg)0.75
This formula accounts for the fact that smaller animals have higher metabolic rates per unit of body weight than larger animals.
Why Body Condition Score Matters
Weight alone doesn't tell the full story. A muscular dog and an overweight dog might weigh the same but have very different calorie needs. The Body Condition Score (BCS) helps assess your pet's actual body fat percentage, allowing for more accurate calculations.
The Impact of Neutering
Neutering/spaying reduces a pet's metabolic rate by approximately:
- Dogs: 11% reduction in daily calorie needs
- Cats: 14% reduction in daily calorie needs
This is why many pets gain weight after being neutered - they continue eating the same amount while needing fewer calories.
Individual Variation
Just like people, every pet is unique. Factors that can affect individual calorie needs include:
- Genetics and breed
- Environmental temperature
- Stress and temperament
- Health conditions
- Quality and digestibility of food
Common Feeding Mistakes to Avoid
- Free-feeding: Leaving food out all day often leads to overeating
- "Eyeballing" portions: Always use a measuring cup or scale
- Forgetting treats: Treats count! Stay within the 10% budget
- Following bag guidelines blindly: These are often too high for neutered pets
- Not adjusting for life changes: Update calculations as your pet ages
Frequently Asked Questions - Pet Calorie Calculator
A dog's daily calorie needs depend on their weight, age, activity level, and whether they're neutered. Use our calculator above to get a personalized recommendation. As a general guide, adult dogs need between 25-30 calories per pound of body weight daily, but this can vary by 50% based on individual factors. Puppies need 2-3 times more calories than adults, while senior dogs typically need 20% fewer calories.
To calculate your cat's daily calories, multiply their ideal body weight in kg to the power of 0.75, then multiply by 70 to get RER (Resting Energy Requirement). Then multiply by a factor based on their life stage: 2.5 for kittens, 1.4 for intact adults, or 1.2 for neutered adults. Our calculator does this automatically. Indoor cats typically need about 20 calories per pound of body weight, while active outdoor cats may need up to 35 calories per pound.
Neutering/spaying reduces a pet's metabolic rate by approximately 11% in dogs and 14% in cats due to hormonal changes. The removal of sex hormones decreases the basal metabolic rate and can increase appetite. This means neutered pets need fewer calories to maintain their weight. Many pets gain weight after neutering because owners continue feeding the same amount. It's important to reduce portions by 10-15% after the procedure.
The 10% rule states that treats, table scraps, and any food given outside of regular meals should not exceed 10% of your pet's total daily calorie intake. This ensures your pet gets proper nutrition from their complete and balanced main diet while still enjoying treats safely. For example, if your dog needs 500 calories per day, no more than 50 calories should come from treats. This helps prevent obesity and nutritional imbalances.
Monitor your pet's weight and body condition score every 2-4 weeks. Adjust portions by 10-15% if you notice unwanted weight gain or loss. Puppies and kittens need frequent adjustments as they grow, sometimes monthly. Adult pets may need seasonal adjustments - many pets need more calories in winter and fewer in summer. Senior pets often need portion reductions as their activity decreases.
Pet calorie calculators provide scientifically-based estimates using veterinary formulas, but individual needs can vary by up to 50%. Factors like genetics, environment, stress levels, and health conditions all affect metabolism. The calculator gives you an excellent starting point, but you must monitor your pet's weight and body condition and adjust accordingly. Always consult your veterinarian for pets with health conditions or extreme weight issues.
Most adult dogs and cats do best with twice-daily feeding (morning and evening). This helps prevent hunger, maintains stable blood sugar, and reduces the risk of bloat in large dogs. Puppies under 6 months need 3-4 meals daily, while kittens may need 4-6 small meals. Senior pets may benefit from smaller, more frequent meals. The total daily calories should be divided equally between meals.
Treat calories vary widely. A typical medium dog biscuit contains 40-50 calories, while a dental chew can have 70-100 calories. For cats, 5 commercial treats usually contain 10-15 calories. Human foods are often very calorie-dense for pets - one tablespoon of peanut butter has about 95 calories, which could be 40% of a small cat's daily needs. Always check the package and include treats in your pet's daily calorie count.