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4Calculators & charts
October 12, 2026Last updated
Calculators
Dog Age CalculatorConvert dog years to human years by breed and size — free, instant and backed by research.
Human Years to Dog Years (Reverse Calculator)Convert your age into dog years for small, medium, large and giant breeds.
Compare Dog AgesCompare up to three dogs side by side — human age, life stage and lifespan.
Dog Age ChartThe complete conversion table for small, medium, large and giant dogs, ages 1 to 20.
Guides
Company & legal
ContactWe read every message — corrections make the calculator better for everyone.
Medical DisclaimerWhat our dog age results can and cannot tell you — and when to call your vet.
Privacy PolicyNo cookies, no accounts, nothing sold. Here is exactly what we handle and why.
Terms of ServiceEducational use, accuracy, content ownership and liability — in plain terms.