About Pet Calculator Kit

Pet Calculator Kit is a set of free, simple calculators for dog and cat owners: puppy growth, calories and food amounts, age in human years, adult size and pregnancy due dates.

How it works: every calculator runs in your browser with plain JavaScript. It uses published formulas and charts, shows the formula on the page and links to the source. See sources and methodology.

Not veterinary advice: the results are estimates for general information. Every pet is different. Your vet knows your pet and should guide diet changes, weight loss, pregnancy care and senior care.

Who we are: an independent small website. We do not employ vets and no vet has reviewed these pages.

Money: the site is free. In the future it may show ads or affiliate links, which will always be labelled; they will never change a result.