Free dog and cat calculators
Work out your pet's age in human years, daily food and pregnancy due date. Free, with sources on every page.
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- ✓ Vet sources
- ✓ Private
What do you want to work out?
How old is my dog in human years?
Dog age calculator: Two methods, adjusted for size.
How much should I feed my dog?
Dog food calculator: Daily calories and cups or grams by weight and life stage.
When is my dog due?
Dog pregnancy calculator: Due date window and a timeline from breeding.
How big will my puppy get?
Puppy weight calculator: Adult weight estimate from weight and age now.
When is her next heat?
Dog heat cycle calculator: Next heat, end of this heat and fertile days.
How much water should my dog drink?
Dog water intake calculator: Daily water by weight, and when it is too much.
How old is my cat in human years?
Cat age calculator: Human age and life stage.
How much should I feed my cat?
Cat food calculator: Daily calories for dry or wet food.
When are my cat's kittens due?
Cat pregnancy calculator: Due date window and timeline from mating.
Dog age by breed
- Chihuahua
- Yorkshire Terrier
- Pomeranian
- Maltese
- Shih Tzu
- Pug
- Dachshund
- French Bulldog
- Boston Terrier
- Miniature Schnauzer
- Cavalier King Charles Spaniel
- Beagle
- Cocker Spaniel
- Corgi
- Bulldog
- Border Collie
- Australian Shepherd
- Siberian Husky
- Staffordshire Bull Terrier
- Basset Hound
- Boxer
- Labrador Retriever
- Golden Retriever
- German Shepherd
- Rottweiler
- Doberman Pinscher
- Standard Poodle
- Miniature Poodle
- Weimaraner
- Vizsla
- Bernese Mountain Dog
- Great Dane
- Saint Bernard
- Mastiff
- Newfoundland
- Greyhound
- Jack Russell Terrier
- Havanese
Where our numbers come from
Formulas come from published veterinary guidelines and research, and each page lists its sources. Read how we calculate. These are estimates, not veterinary advice.