Dog Years Calculator
Convert your dog’s age to human years instantly
🐶 Dog Age
Or Type Age
Dog Size
Dog Years to Human Years: How It Works
Our dog years calculator converts your dog’s age to human years using size-adjusted rates validated by veterinary research. Year 1 = 15 human years for all sizes. Year 2 adds 9 more. After that, small dogs age at ~4.5 human years per year, medium at ~5, large at ~6, and giant breeds at ~7.5 per year.
Dog Years Conversion Chart
| Dog Age | Small | Medium | Large | Giant |
|---|---|---|---|---|
| 1 yr | 15 | 15 | 15 | 15 |
| 3 yrs | 29 | 29 | 30 | 32 |
| 5 yrs | 38 | 39 | 42 | 47 |
| 7 yrs | 47 | 49 | 54 | 62 |
| 10 yrs | 60 | 64 | 72 | 85 |
FAQs
Is 7 dog years equal to 1 human year?
No — this is a myth. The accurate answer depends on the dog’s age and size. In year 1, dogs age 15 human years. After age 2, it’s 4.5-7.5 human years per dog year depending on breed size.
How many dog years is 10 human years?
10 human years is roughly 0.7 dog years — not even one full year for a dog. The conversion rate is very high in the first dog year because dogs mature so rapidly.
Conclusion
Use our dog years calculator to instantly convert any dog age to human years. For breed-specific results, visit our dog age calculator. Pair it with our dog food calculator for life stage nutrition.