Dog Age in Human Years Calculator
Calculate Dog Age in Human Years
Formula
Human Age = sum of size-adjusted yearly increments (first year ~15, second ~9, then 4-8 per year depending on size)
Frequently Asked Questions
Is 1 dog year really 7 human years?
No. The old 1:7 ratio is inaccurate. Dogs age faster in their first two years and the rate varies by size. Small dogs age slower than large breeds after the initial years.
Why does dog size matter?
Larger dogs tend to age faster and have shorter lifespans. A Great Dane is considered senior at 6-7 years, while a Chihuahua may not be senior until 10-11 years.
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