Dog Years to Human Years
Dog Age Calculator - Find puppy age or dog age in human years
You can enter dog's age by years, months, weeks or days OR select the date of birth to compute human years. You can enter human years to find the equivalent dog years.
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How to Convert Dog year to Human year
To calculate human years based on dog years or dog's date of birth, enter dog years, months, weeks and days or select dog's date of birth to get human years.
Dog years varies by size of dog like small, medium, large and giant sized.
To find different sized years select dog size like small, medium, large and giant.
Guidelines on Dog Years to Human Years
- There is no single formula to calculate dog years to human years, as the rate at which dogs age varies depending on their breed, size, and overall health. However, there are a few general guidelines that can be used.
- The first year of a dog's life is equivalent to about 15 human years. The second year of a dog's life is equivalent to about 9 human years. Each additional year of a dog's life is equivalent to about 5 human years.
Another guideline is the formula:
Human age = 16 * ln(dog age) + 31 where ln is the natural logarithm.
- This formula is based on the research of Dr. Trey Ideker, a professor of genetics at the University of California, San Diego.
- Puppies age at a much faster rate than humans, especially in their first two years of life. During this time, they are developing rapidly, both physically and mentally.
Here is a general guide for calculating puppy to human years:
- 1 year old puppy = 15 human years.
- 2 year old puppy = 24 human years.
- After 2 years old, each puppy year is equal to about 5 human years.
- This means that a 3-year-old puppy is equivalent to a 29-year-old human, a 4-year-old puppy is equivalent to a 34-year-old human, and so on. It is important to note that this is just a general guide.
- Puppy to human age can vary depending on its breed, size, and overall health. For example, small dogs tend to live longer than large dogs, and mixed-breed dogs tend to live longer than purebred dogs.
- There is a general correlation between breed, size, and lifespan of dogs. Smaller dogs tend to live longer than larger dogs. This is because smaller dogs have a slower metabolism and are less susceptible to certain diseases.
- Here are some examples of the average lifespan of different breeds of dogs:
- Small breeds: 13-15 years (e.g., Chihuahua, Yorkshire Terrier, Pomeranian)
- Medium breeds: 10-13 years (e.g., Beagle, Cocker Spaniel, English Bulldog)
- Large breeds: 7-10 years (e.g., German Shepherd, Labrador Retriever, Golden Retriever)
However, it is important to note that these are just general averages. The actual lifespan of a dog can vary depending on its individual health, genetics, and lifestyle.
Refer the table in next section that captures Dog Years to Human Years and Puppy Years to Human Years based on these general guidelines.
Dog Age Chart (Dog to Human Years)
| Age in Dog Years | Small Breed to Human Year | Medium Size Breed to Human Year | Large Breed to Human Year | Giant / Very Large Breed to Human Year |
|---|---|---|---|---|
1 year | 15 years | 15 years | 15 years | 12 years |
2 years | 24 years | 24 years | 24 years | 22 years |
3 years | 28 years | 28 years | 28 years | 31 years |
4 years | 32 years | 31 years | 32 years | 38 years |
5 years | 36 years | 36 years | 36 years | 45 years |
6 years | 40 years | 42 years | 45 years | 49 years |
7 years | 44 years | 47 years | 50 years | 56 years |
8 years | 48 years | 51 years | 55 years | 64 years |
9 years | 52 years | 56 years | 61 years | 71 years |
10 years | 56 years | 60 years | 66 years | 79 years |
11 years | 60 years | 65 years | 72 years | 86 years |
12 years | 64 years | 69 years | 77 years | 93 years |
13 years | 68 years | 74 years | 82 years | 100 years |
14 years | 72 years | 78 years | 88 years | 107 years |
15 years | 76 years | 83 years | 93 years | 114 years |
16 years | 80 years | 87 years | 99 years | 121 years |
17 years | 84 years | 92 years | 105 years | 128 years |
18 years | 88 years | 96 years | 111 years | 135 years |
19 years | 92 years | 101 years | 117 years | 142 years |
20 years | 96 years | 105 years | 122 years | 149 years |
Puppy Age in Human Years
| Puppy Age | Human Years |
|---|---|
| 1 week | 0.31 years |
| 2 weeks | 0.63 years |
| 3 weeks | 0.94 years |
| 4 weeks / 1 month | 1.25 years |
| 6 weeks / 1.5 months | 1.88 years |
| 8 weeks / 2 months | 2.5 years |
| 10 weeks / 2.5 months | 3.13 years |
| 11 weeks | 3.44 years |
| 12 weeks / 3 months | 3.75 years |
| 13 weeks | 4.06 years |
| 14 weeks | 4.38 years |
| 15 weeks | 4.69 years |
| 16 weeks | 5 years |
| 17 weeks | 5.31 years |
| 18 weeks | 5.63 years |
| 19 weeks | 5.94 years |
| 20 weeks | 6.25 years |
| 24 weeks | 7.5 years |
| 1 month | 1.25 years |
| 2 months | 2.5 years |
| 3 months | 3.75 years |
| 4 months | 5 years |
| 5 months | 6.25 years |
| 6 months | 7.5 years |
| 7 months | 8.75 years |
| 8 months | 10 years |
| 9 months | 11.25 years |
| 10 months | 12.5 years |
| 11 months | 13.75 years |
| 12 months | 15 years |
Frequently Asked Questions on Dog Years Calculator
1 year in dog years means 1 year in dog years to human years. 15 human years equals the first year of a medium-sized dog's life.
It varies by size of dog like small, medium, large and giant sized. 15 human years equals the 1 year of a medium-sized dog’s life. Year 2 for a dog equals to 24 human years. Year 3 for a dog equals to 31 human years. And after that, each human year it increases by 4-6 years every year for a dog.
