🍖 Pet Food Calculator

Our pet food calculator uses standard veterinary formulas to determine Daily Energy Requirement (DER). It involves two steps:

1. Step 1 (RER): Calculate Resting Energy Requirement based on weight (70 × kg^0.75). This is the energy needed to just exist.
2. Step 2 (DER): Multiply RER by a specific 'Activity Factor' depending on age (puppy vs adult), activity level, and neuter status.

After a dog or cat is spayed or neutered, their metabolism typically slows down and their energy requirements decrease by roughly 10% to 15%. If you don't reduce their daily food intake accordingly, it can rapidly lead to weight gain and obesity.

No. Remember that not all pet foods have the same calorie density. Our tool estimates portion sizes in grams based on a standard dry food density of roughly 3,600 kcal/kg. For the highest accuracy, you should look at your specific pet food package, find the "kcal/kg", and use the daily calorie output from our tool to calculate precise grams.