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.
The human years corresponding to the dog years is displayed automatically
You can also enter human years and find the corresponding dog years.
Guidelines on Dog Years to Human Years
- The conversion from dog to human age is more of an estimate and general guideline based on studies
- The 1st year of a dog is equal to 15 human years. 2nd year is 9 human years. From the 3rd year onwards, every year is equal to 5 human years
Another guideline is the formula:
Human age = 16 * ln(dog age) + 31 where ln is the natural logarithm.
- There is some correlation between breed, size, and lifespan of dogs. Smaller dogs tend to live longer than larger dogs.
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
What is One dog year?
It means 1 year in dog years that roughly corresponds to 15 human years in the first year of birth.
How does the dog to human year conversion vary with breed?
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.
