Pet Calculators
Keep your pets healthy and happy with our free pet calculators. Find your dog or cat's age in human years, calculate the right food portions, and manage your aquarium with volume and water change tools. Quick, accurate, and designed for pet owners.
Dogs & Cats
Age conversion and food portion calculators for your furry friends.
Dog Age Calculator
Convert your dog's age to human years using size-adjusted formulas.
Cat Age Calculator
Find your cat's age in human years based on veterinary guidelines.
Pet Food Calculator
Calculate daily food portions based on weight and activity level.
Aquarium
Tank volume and water maintenance tools for fishkeepers.
Frequently Asked Questions
How do I convert my dog's age to human years?
The old "7 years per human year" rule is inaccurate. Dogs age faster in their first two years — a 1-year-old dog is roughly equivalent to a 30-year-old human. Our dog age calculator uses size-adjusted formulas because small breeds age slower than large breeds after the first two years. Enter your dog's age and breed size for a more accurate conversion.
How much food should I feed my pet?
The pet food calculator estimates daily portions based on your pet's weight, age, activity level, and whether they need to lose, maintain, or gain weight. It gives results in cups and grams for dry food. Puppies and kittens need more calories per pound than adults, and active pets need more than sedentary ones.
How do I calculate aquarium water volume?
The aquarium calculator computes water volume from your tank's length, width, and height in inches or centimeters. It gives results in gallons and liters, accounting for substrate and decoration displacement if you enter those values. Accurate volume is essential for proper dosing of water treatments and stocking levels.
How often should I change aquarium water?
Most freshwater aquariums benefit from 10-25% water changes weekly. The aquarium water change calculator helps you determine the right volume based on your tank size, fish load, and filtration. Overstocked tanks or those with sensitive species may need more frequent changes to maintain healthy water parameters.