Calculators for dogs & cats
Free, no-signup pet math — your dog's age in human years (adjusted for size), your cat's age, how much to feed your dog a day, and how big your puppy will grow. Each one shows its method.
Dog Age Calculator
Your dog's age in human years — adjusted for size, since small and large breeds age differently.
Find dog yearsCat Age Calculator
Your cat's age in human years — the first two years count for much more than the rest.
Find cat yearsDog Food Calculator
A daily-calorie and cups-per-day starting point by your dog's weight, age, and activity.
Estimate portionsPuppy Weight Calculator
Estimate how big your puppy will get as an adult, from its current age and weight.
Estimate adult weightCat Food Calculator
Daily calories and cups for your cat, from its weight and life stage.
Feed your cat rightDog Water Intake Calculator
How much water your dog should drink each day, based on body weight.
Daily water needsGuides
Plain-English pet help — how pet years really work, how much to feed a dog, and how big a puppy will get.