Founder of Pawculations. Builds the calculators and checks every formula against published veterinary sources.
Convert your dog's age to human years, or your age to dog years, with a size-adjusted vet chart and the 2020 epigenetic formula. Free, instant, and sourced.
Convert your cat's age to human years, or your age to cat years, with the standard veterinary chart, plus their official life stage.
Estimate the whelping due date and get a week-by-week pregnancy timeline from the mating date.
Estimate when the kittens are due and follow the pregnancy week by week from the mating date.
Age a kitten within about a week using weight, teeth, and eyes, with a week-by-week chart from newborn to six months.
Estimate your puppy's adult weight from their current age and weight, adjusted for breed size.
Work out your dog's daily calorie needs from weight, life stage and activity, using the standard RER and MER formulas.
Work out your cat's daily calorie needs from weight and life stage, using the standard RER and MER formulas.
How much wet or dry food to feed a cat per day, in cans and cups, from weight and life stage.
How much food to feed a dog per day, in cups and cans, from weight and life stage.
Mild chocolate toxicity starts around 20 mg of theobromine per kg of body weight. Enter your dog's weight, the chocolate type, and the amount for an instant risk level.
No, chocolate is toxic to cats: mild signs start around 20 mg of theobromine per kg of body weight. Enter your cat's weight, the type, and the amount for an instant risk level.
Owning a cat costs about $80 to $355 a month once settled, after a first-year setup of roughly $1,500 to $6,700. Itemized from 2026 price data, budget to premium.
