Pet Tools

Free Pet Care Calculators — Keep Your Dog or Cat Healthy

Your pet can't tell you how much they should eat, what their weight means in human years, or whether they're in a healthy weight range for their breed. Our free pet calculators are designed to help you make better, more informed decisions about your dog's or cat's health and nutrition — using data-backed guidelines from veterinary nutrition research. Whether you need a dog feeding calculator, a cat age converter, or a pet weight estimator, we've got you covered.

Dog Feeding Calculator — How Much Should I Feed My Dog?

Overfeeding is one of the leading causes of obesity in dogs, which in turn is linked to joint problems, diabetes, heart disease, and a reduced lifespan. Our dog feeding calculator takes your dog's weight, age (puppy, adult, or senior), and activity level and gives a daily food portion recommendation based on standard veterinary nutrition guidelines. The tool also factors in whether your dog is neutered or intact, as this affects caloric needs. Always use these as a starting guideline and consult your vet to fine-tune portions for your dog's specific breed and health status.

Cat Age Calculator — How Old Is My Cat in Human Years?

The popular myth that one cat year equals seven human years is an oversimplification. In reality, cats age rapidly in their early years — a 1-year-old cat is roughly equivalent to a 15-year-old human, and by age 2 they're closer to 25. After that, the aging rate slows to about 4 human years per cat year. Our cat age calculator uses a non-linear conversion model to give you an accurate human-equivalent age for your cat, helping you understand their life stage and the health care priorities appropriate for that stage (kitten, junior, prime, mature, senior, geriatric).

Pet Weight Estimator — Is My Dog or Cat a Healthy Weight?

Healthy weight ranges vary significantly by breed. A healthy Chihuahua weighs 1.5–3 kg; a healthy Labrador weighs 25–36 kg. Our pet weight estimator covers 25+ popular dog and cat breeds and gives you the healthy weight range for your pet's specific breed, along with guidance on whether your pet may be underweight, overweight, or right on track. Regular weight monitoring is one of the easiest ways to catch the early signs of health issues in pets, and it's a metric your vet will check at every annual visit.

Looking After Your Pet's Health

Alongside nutrition and weight management, regular veterinary check-ups, appropriate vaccinations, dental care, and exercise are the foundation of a long and healthy life for your pet. For your own health tracking, explore our human health tools including a BMI calculator and water intake calculator. Browse all civvy.tech tools.