🐾 Pet Age Calculator
How old is your pet?
Discover your pet's age
in human years
Enter your dog or cat's age to instantly see their human-equivalent age.
💡 The 1 dog year = 7 human years rule is a myth. Real conversion varies by breed size and age.
Dog Years to Human Years Chart
Based on medium breed size
1 yr
15
human
2 yr
24
human
3 yr
28
human
4 yr
32
human
5 yr
36
human
6 yr
42
human
7 yr
47
human
8 yr
51
human
9 yr
56
human
10 yr
60
human
11 yr
65
human
12 yr
69
human
13 yr
74
human
14 yr
78
human
15 yr
83
human
How it works
🐕 Why the "1 year = 7 years" rule is wrong
Dogs mature much faster than humans in their first two years. A 1-year-old dog is roughly 15 in human years, not 7. After that, each year adds about 4-5 human years, with the rate varying by breed size.
🐈 Cat age conversion
Cats also mature quickly in their first year (reaching ~15 human years), then slow down to about 4 human years per cat year after age 2.
📏 Why size matters for dogs
Large breeds age faster in their senior years. A 10-year-old small dog is ~56 human years, while a 10-year-old large dog is ~66 — a 10-year difference that matters for care and health expectations.