Tools / Calorie Calculator
Pet Calorie Calculator
Estimate how many calories your dog or cat needs each day. Senior pets are usually less active and need fewer calories — getting this right helps avoid the weight gain that strains aging joints.
Enter your pet's weight to estimate their daily calories.
⚕️ This is an educational estimate using the standard RER × activity formula. Senior pets and those with kidney, heart, or weight conditions often need a different target — always confirm your pet's daily calories with your veterinarian.
How the calculation works
We use the standard veterinary formula. First we find the Resting Energy Requirement (RER) — the calories a pet burns at rest — using 70 × (body weight in kg)^0.75. Then we multiply by an activity factor for your pet's life stage and goal (for example, a neutered adult, a senior, or a pet that needs to lose weight).
Turning calories into cups
Look for the calorie content (kcal/cup or kcal/can) on your food's label, then divide the daily calories by that number to get the daily amount. Split it across meals, and re-check your pet's weight every few weeks.
⚕️ This is an estimate for healthy pets. Kidney, heart, weight, and other conditions change the target — always confirm with your veterinarian.