3 years Dog Age in Human Years

If your dog age is 3 years, you can calculate dog age in human years according to dog size, here are some calculations:

How old is my dog in human years, if dog age is 3 years?

If your dog age is 3 years and Medium Breed, it might be roughly equivalent to around 28 human years.

Dog Years to Human Years by Size

Size of Dog =>	Small 20 lbs or less	Medium 21 - 50 lbs	Large 51 - 100 lbs	Giant 100+ lbs
Age of Dog	Age in human years
2 months	1.5	1.5	1.5	1.2
6 months	5	5	5	4.5
8 months	9	9	9	8
1 year	15	15	15	12
2 years	24	24	24	22
3 years	28	28	28	31
4 years	32	32	32	38
5 years	36	36	36	45
6 years	40	42	45	49
7 years	44	47	50	56
8 years	48	51	55	64
9 years	52	56	61	71
10 years	56	60	66	79
11 years	60	65	72	86
12 years	64	69	77	93
13 years	68	74	82	100
14 years	72	78	88	107
15 years	76	83	93	114
16 years	80	87	99	121
17 years	84	91	104	128
18 years	88	95	109	135
19 years	92	99	114	142
20 years	96	103	119	149