FurCalcs › Cat Calculators

Cat Calculators

Seven free tools for cat owners, built on the AAHA/AAFP guidelines and veterinary energy math — because cats deserve better than guesswork.

Cat Age CalculatorConvert cat years to human years with the veterinary age chart.Cat Calorie CalculatorDaily calorie needs for cats and kittens, vet RER formula.Cat Food CalculatorWet and dry food portions per day, from your cat's calorie needs.Kitten Growth ChartIs my kitten's weight on track? Check against the weekly curve.Toxic Food Checker for CatsInstantly check if a food is dangerous for your cat.Cat Water Intake CalculatorHow much your cat should drink — and how diet changes it.Cat Pregnancy CalculatorDue date and kitten timeline from the mating date.Cat Healthy Weight QuizFive hands-on checks — is your cat a healthy weight?

Which cat calculator do I need?

Start with age. The cat age calculatoruses the veterinary 15-9-4 rule and the 2021 AAHA/AAFP life stages, so you know whether you're living with a young adult, a mature adult, or a senior who's earned twice-yearly checkups.

Feeding is where most cats go wrong — a typical indoor neutered cat needs only about 200 kcal a day, and the gap between that and the scoop-and-hope method is why over half of house cats are overweight. Thecalorie calculator gives the veterinary number; thefood calculator converts it into cups of dry, cans of wet, or a mix. Pair them with thewater intake calculator, which also shows how much hydration wet food already provides.

Safety questions get instant answers. Thetoxic food checker covers the foods people actually share — onion, chocolate, grapes, milk, tuna — with severity levels and what to do, sourced from ASPCA guidance.

Raising kittens or expecting them? Thekitten growth chart checks weekly weight against the healthy band (any weight loss in a young kitten is an emergency), and thepregnancy calculator maps the 63-65 day feline gestation into dates you can put on a calendar.

Each tool shows its formula and cites its sources. For anything beyond arithmetic — see your vet. Cats hide illness professionally; numbers help you notice sooner.