Paw Primer

Paw Primer Tools

Free calculators for dog and cat owners. Each one shows its published source and where the number stops being useful and a vet visit starts.

Free calculators. Every formula and price range is cited on the tool page.

Dog’s Age Calculator: Dog Years to Human Years by Size

Enter your dog’s age in years and months plus its size class; get the human-age equivalent from the AKC chart and the 2020 epigenetic-clock formula. Open the calculator