๐พ Pet Food Calculator
This is only a general guideline. Always consult a veterinarian to determine actual feeding amounts.
Enter your pet's weight, activity level, and the food's calorie density (kcal per 100g) to calculate its daily food amount, based on the Resting Energy Requirement (RER) and Daily Energy Requirement (DER) formulas widely used in veterinary nutrition.
How to use
- Enter your pet's weight (kg).
- Choose its activity level (neutered/intact adult, active, puppy/kitten growth, etc.).
- Enter the food's calorie density (kcal/100g, from the package) and how many meals per day โ the daily and per-meal amounts are calculated automatically.
FAQ
What are RER and DER?
RER (Resting Energy Requirement) is a baseline calorie need calculated from body weight (70 ร weight in kg, raised to the 0.75 power). DER (Daily Energy Requirement) is RER multiplied by a factor for the pet's activity level, giving an estimate of actual daily calorie needs.
Where do I find the calorie density (kcal/100g)?
Most pet food packaging lists this as "metabolizable energy" (ME). If it's not listed, check the manufacturer's website or contact their customer support.
Is this calculation exact enough to just follow directly?
It's only a general estimate โ appropriate feeding amounts vary by individual factors like body condition, health status, and whether the pet is spayed/neutered. Always consult a veterinarian to set feeding amounts, especially for puppies/kittens, pregnant animals, or pets with health conditions.