How old is my dog in human years ?

Our common knowledge when it comes to finding out your dog's age in human years has been 1:7.  Meaning that 1 human year equals 7 dog years. Until now we have divided the median age of humans of 80 years by 12 and therefore come to this conclusion that one human year is 7 dog years.     

Based on study of 104 labradors ranging from puppies to 16 year old dogs. The scientists of university of California measured chemical changes of genes in dogs and compared to human genes from all age groups. 

They came to the conclusion that dogs age faster than humans in the first years and they reach middle age very fast. After that the aging of the dogs slows down fast.  The sciece article suggests a formula that was somewhat confusing, so we simplified these findings in New Scientist in the following table . 


1 year old dog equals 31 years in human age 

2 year old dog equals 42 years in human age

3 year old dog equals 48.5 years in human age

4 year old dog equals 53 years in human age

5 year old dog equals 56.7 years in human age

6 year old dog equals 59.66 years in human age

7 year old dog equals 62.13 years in human age

8 year old dog equals 64.2 years in human age

9 year old dog equals 66.1 years in human age

10 year old dog equals 67.8  years in human age

11 year old dog equals 69.36 years in human age

12 year old dog equals 70.75 years in human age

13 year old dog equals 72 years in human age

14 year old dog equals 73.22 years in human age

15 year old dog equals 74.3 years in human age

16 year old dog equals 75.3 years in human age

17 year old dog equals 76.3 years in human age

18 year old dog equals 77.2 years in human age

19 year old dog equals 78.1 years in human age

20 year old dog equals 78.9 years in human age

21 year old dog equals 79.7 years in human age

22 year old dog equals 80.4 years in human age

23 year old dog equals 81.1 years in human age

24 year old dog equals 81.8 years in human age

25 year old dog equals 82.5 years in human age

26 year old dog equals 83.1  years in human age

27 year old dog equals 83.73 years in human age

28 year old dog equals 84.31 years in human age

29 year old dog equals 84.8 years in human age

30 year old dog equals 85.4 years in human age


Refrences 

https://doi.org/10.1016/S0262-4079(19)32244-4

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