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Dog Years Calculator




Example: 3-year-old dog(small sized) = 15 human years
Size of dog:
Age of dog:
Human Years:

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The online dog years calculator is used to calculate the dog years to human years instantly.

How to convert dog years to human years


The easy way to calculate a dogs age is to take 1 dog year and multiple it by 7 years. This is based on an assumption that dogs live to about 10 and humans live to about 70, on average.

However, the math isn't that simple. Size and breed also play a role. Smaller dogs tend to live longer than larger ones

To have a full picture of dog age convertion to human years. You may refer to the following table.

Dog age conversion table


Age of dog (years) Age in human years for Small breed(20 lbs or less) Age in human years for medium breed(21 lbs to 50 lbs) Age in human years for large breed(more than 50 lbs)
1 15 15 15
2 24 24 24
3 28 28 28
4 32 32 32
5 36 36 36
6 40 42 45
7 44 47 50
8 48 51 55
9 52 56 61
10 56 60 66
11 60 65 72
12 64 69 77
13 68 74 82
14 72 78 88
15 76 83 93
16 80 87 120

To calculate the dog age in human years, please use our dog years calculator for free.

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