Free pet calculators from Pawspera — work out your pet’s real age, the right food portion, water needs and pregnancy due date. Everything runs right in your browser, and more tools are added regularly. These are friendly guides, not a substitute for your vet.
Pet Age Calculator
Convert your dog or cat’s age into human years — the modern, size-aware way.
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Dog Food Portion Calculator
How much to feed your dog each day, by weight, life stage and food.
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Pet Pregnancy Due Date
Find your dog or cat’s expected due date and whelping window from the mating date.
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Pet Water Intake Calculator
How much water your dog or cat should drink a day, by weight.
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Puppy Weight Predictor
Estimate how big your puppy will get, using size-based growth curves.
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Dog Crate Size Finder
Find the right crate size for your dog’s adult weight.
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