Pet Care Calculators & Tools

Smart Pet Care Tips

Dog & Cat Daily Calorie & Food Calculator

Enter your pet's details to estimate daily calories and how much food to serve.

Species

Dog Cat

Dog's weight (kg)

Use the current weight. 1 lb = 0.4536 kg.

Age (years)

Use decimals for young pets (0.5 = 6 months). Under 1 year uses growth values.

Activity level Low (inactive) Normal High (very active)

Neutered / spayed?

Yes No

Food energy density (kcal per 100 g)

Check the label. Dry food is often 330–400, wet food 70–120. If shown per kg, divide by 10.

Meals per day 2 meals 3 meals 4 meals

Young pets often do best with 3–4 smaller meals.

Your Pet's Daily Estimate

RER (resting) 0 kcal/day Energy needed at rest

MER (daily target) 0 kcal/day

Food per day 0 g

Food per meal 0 g

This is an estimate only. Your pet's real needs may differ.

Dog Food Calculator and Cat Calorie Calculator

Wondering how much to feed my pet is a common question for every owner. This dog food calculator and cat calorie calculator estimate daily energy needs using a trusted veterinary method.

Resting Energy Requirement, or RER, is the calories a healthy animal needs at rest. It is calculated as 70 multiplied by body weight in kilograms raised to the power of 0.75. Maintenance Energy Requirement, or MER, multiplies RER by a factor reflecting life stage, neutering, and activity.

Food energy density matters because products differ widely. Dry kibble often contains around 350 kcal per 100 grams, while wet food may contain far less. The calculator divides your pet's calorie target by the kilocalories in each gram to find daily portions.

Species differ too. Dogs are omnivorous and usually need higher multipliers, while cats are obligate carnivores with lower energy factors. Puppies and kittens grow quickly, so they use separate growth calculations instead of adult values.

Every animal is an individual. Monitor body condition, adjust portions gradually, and consult your veterinarian before changing diets, especially for pets with medical conditions, pregnancy, obesity, or special nutritional needs. Treats also count toward daily calories. Weigh regularly.

Disclaimer: This calculator provides general estimates for healthy pets and is not a substitute for professional veterinary advice. Pets with illness, pregnancy, lactation, obesity, or special dietary needs should be fed under veterinary guidance. Always consult your veterinarian before making major changes to your pet's diet.