12 dog years to human years by size
| Dog size | Human age | Life stage |
|---|---|---|
| Small (20 lb or less) | 64 | senior |
| Medium (21 to 50 lb) | 69 | senior |
| Large (51 to 100 lb) | 77 | senior |
| Giant (over 100 lb) | 93 | senior |
The old "multiply by seven" rule would say 84. The DNA-based formula from UC San Diego (16 × ln(12) + 31) gives 71. That formula was built on Labradors, so it fits medium and large dogs best.
What 12 looks like for a dog
Twelve is a great age for a large dog. Twice-yearly senior screening, non-slip rugs and a ramp to the car can make life easier.
Frequently asked questions
How old is a 12 year old dog in human years?
Between 64 and 93 human years. Small dogs (under 20 lb) are about 64, medium dogs 69, large dogs 77 and giant breeds 93.
Is a 12 year old dog a senior?
For a small dog, no (senior). For a large dog it is yes, and for a giant breed it is yes.