Printable Dog Age in Human Years Chart
Last updated 2026-06-08
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A one-page reference showing human-year equivalents for dogs from age 1 through 16, across four size classes: Toy/Small (under 20 lb), Medium (20–50 lb), Large (50–90 lb), and Giant (90+ lb). Based on the AAHA 2019 Canine Life Stage Guidelines — the clinical reference used by veterinarians — not the inaccurate 7× folk rule. Large and giant dogs age faster than small dogs: a 10-year-old giant-breed dog is equivalent to ~79 human years, while a 10-year-old toy breed is ~56. Includes life stage thresholds (puppy, young adult, mature adult, senior) per size class. Reference only — not veterinary advice.
For best results, print at 100% scale— not “fit to page.”