🔢 Cat Calorie Calculator
RER and MER calculations using standard veterinary formulas. Save your cat's profile for quick recalculation.
Cat Profile
How It Works
This calculator uses the standard veterinary RER (Resting Energy Requirement) formula: RER = 70 × (weight in kg)^0.75
Then applies a MER (Metabolic Energy Requirement) multiplier based on life stage, activity, and neuter status:
- Indoor neutered adult: × 1.2
- Indoor intact adult: × 1.4
- Active/outdoor: × 1.6
- Kitten (growth): × 2.5
- Senior (reduced): × 1.1
Sources: WSAVA Global Nutrition Committee, AAHA Nutritional Assessment Guidelines. This is a starting point — adjust based on body condition.