Pet Calculators

Free calculators and care guides for pet owners. Calculate pet age, food intake, calories, pregnancy dates, water requirements, weight management and more.

Browse All Calculators

Browse by Pet

Dog

Age, Food, Calories, Pregnancy & More

Cat

Age, Food, Weight & Health Tools

Rabbit

Diet, Age & Pregnancy Calculators

Bird

Age, Feeding & Care Calculators

Hamster

Age, Weight & Health Tools

Guinea Pig

Weight, Feeding & Care Tools

Fish / Aquarium

Tank Size & Aquarium Calculators

Turtle

Growth & Care Calculators

Reptile

Habitat & Health Calculators

Horse

Age, Weight & Equine Tools

About Pet Calculators

Pet Calculators provides free online tools for pet owners, breeders, animal enthusiasts and veterinary professionals.

Our calculators help estimate pet age, calorie needs, food portions, water intake, pregnancy dates, gestation periods, weight management, aquarium sizing and many other pet care metrics.

Browse calculators for dogs, cats, rabbits, birds, hamsters, guinea pigs, fish, turtles, reptiles and horses.