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Pets Calculators
Free calculators for dog and cat owners: age in human years, daily food amounts and a dog's whelping window, each with its formula and sources.
4 calculators, all free, formula included
Dog Age Calculator
Dog years to human years by size class, in years, months or weeks, with a 2020 University of California San Diego research formula alongside.
Use Calculator →Cat Age Calculator
Cat years to human years using Cornell's formula or the common chart, with the life stage from veterinary guidelines and a 1 to 20 year table.
Use Calculator →Pet Food Calculator
Daily calories and cups, cans or grams for dogs and cats, with wet and dry feeding, treats and weight loss.
Use Calculator →Dog Pregnancy Calculator
Whelping window from the mating, luteinizing hormone surge or ovulation date, with a dated vet calendar and the signs that labor is near.
Use Calculator →