How Our Dog Food Calculator Works

Our dog food calculator uses veterinary-approved formulas to help you determine the right amount of food for your furry friend.

The Science Behind the Calculations

1. Resting Energy Requirement (RER)

We start with the veterinary standard RER formula: RER = 70 × (body weight in kg)^0.75

This formula, recommended by the Association of American Feed Control Officials (AAFCO) and veterinary nutritionists worldwide, calculates the basic energy needed for essential bodily functions.

2. Daily Energy Requirement (DER) Multipliers

We multiply RER by life stage and activity factors based on veterinary research:

  • Low Activity (Senior/Indoor/Spayed-Neutered): RER × 1.2
  • Normal Activity (Typical Adult): RER × 1.6
  • High Activity (Working/Very Active): RER × 2.0-2.5

3. Food Type Caloric Densities

We use industry-standard caloric densities for different food types:

  • Dry Food/Kibble: ~3,750 kcal/kg (375 kcal per cup)
  • Wet/Canned Food: ~1,000 kcal/kg (225 kcal per cup)
  • Raw Food: ~1,750 kcal/kg (450 kcal per cup)

Note: These are average values. Actual caloric density varies by brand and formula. Always check your specific food's feeding guidelines and caloric content.

Important Disclaimers

Veterinary Consultation Required: Our calculator provides general guidelines based on average dogs. Every dog is unique, and factors like breed, age, health conditions, and metabolism can significantly affect dietary needs. Always consult with your veterinarian for personalized feeding recommendations.

Factors Not Included in Our Calculator

  • Specific breed characteristics
  • Age-related metabolic changes
  • Medical conditions (diabetes, kidney disease, etc.)
  • Pregnancy or nursing status
  • Current body condition (overweight/underweight)
  • Spay/neuter status
  • Environmental temperature

Using the Results

Our calculator provides daily, weekly, and monthly estimates to help you:

  • Plan your dog's daily feeding schedule
  • Budget for weekly food purchases
  • Estimate monthly food costs
  • Monitor your dog's food intake

Tips for Best Results

  • Weigh your dog regularly and update calculations as needed
  • Start with our recommendations and adjust based on your dog's body condition
  • Monitor your dog's weight and energy levels
  • Consider treats and table scraps in total daily calories
  • Divide daily food into 2-3 meals for better digestion

Remember: These calculations are starting points. The best feeding amount is one that maintains your dog at an ideal body weight with good energy levels and overall health.

Try the Calculator