Pet Feeding Portion Calculator – Dog & Cat Food Portion Size Calculator
Use our free pet feeding portion calculator to determine the right amount of food for your dog or cat. Our dog food portion calculator and cat food portion calculator calculate daily portions based on weight, age, activity level, and food type with meal planning and treat allowances.

Spayed/neutered pets typically need 10-20% fewer calories
Typical range: 300-400 calories per cup
Most adult pets do well with 2 meals per day
Enter total calories from treats per day. This will be subtracted from food calories.
How Pet Feeding Portion Calculator Works
Our pet feeding portion calculator uses standard veterinary formulas (RER and DER) to determine your pet's daily calorie needs. RER (Resting Energy Requirement) is calculated based on weight, then multiplied by activity factors to get DER (Daily Energy Requirement). The calculator then divides this by your food's calorie content to determine the exact portion size needed.
Understanding Portion Sizes
Portion sizes vary based on multiple factors: puppies and kittens need more calories per pound for growth, active pets need more than sedentary ones, and spayed/neutered pets typically need 10-20% fewer calories. The calculator accounts for all these factors to provide accurate portion recommendations.
Frequently Asked Questions
How do I calculate the right portion size for my pet?
Use our feeding portion calculator by entering your pet's weight, age, activity level, and food type. The calculator uses standard veterinary formulas (RER and DER) to determine daily calorie needs, then calculates the appropriate portion size based on your food's calorie content.
How many meals per day should I feed my pet?
Most adult pets do well with 2 meals per day. Puppies and kittens typically need 3-4 meals per day. The calculator allows you to divide the daily portion across multiple meals and provides a meal breakdown.
How much should I feed my puppy or kitten?
Puppies and kittens need more calories per pound than adults due to growth. Puppies typically need 3x their resting energy requirement, while kittens need 2.5x. Feed 3-4 smaller meals per day and use puppy/kitten-specific food formulas.
How many treats can I give my pet?
Treats should make up no more than 10% of your pet's total daily calories. The calculator automatically calculates treat allowance and subtracts treat calories from food portions to maintain proper nutrition.
Related Tools & Resources
Disclaimer: This calculator provides estimates based on standard formulas. Individual pets may have different needs based on metabolism, health conditions, and other factors. Always consult with your veterinarian for personalized feeding recommendations, especially for pets with health conditions, weight management needs, or special dietary requirements. Adjust portions based on your pet's body condition and weight changes.