Reckon what your pet actually needs
Free calculators for dogs, cats, fish and small pets: age, food portions, tank volume and stocking. Save a pet once and every tool pre-fills.
The calculators
Dogs
Dog Age Calculator
Your dog's age in human years, breed-size adjusted, not the Γ7 myth.
Cats
Cat Age Calculator
Your cat's age in human years using the real feline curve, not the Γ7 myth.
Dogs
Food Portion Calculator
How much to feed: daily calories and cups by weight, activity and life stage.
Fish & Aquarium
Aquarium Volume Calculator
Tank gallons and liters from your dimensions: rectangle, cylinder, hex and more.
Fish & Aquarium
Fish Tank Stocking Calculator
Bioload-based stocking guidance, not the oversimplified 1-inch-per-gallon rule.
One saved pet, every tool
Add your pet in and their breed, weight and birthdate pre-fill the age, food and growth calculators, with no re-typing. Saved on your device only.