Life stage: Puppy to young adult
Your dog is still young. Training, socializing and building a healthy weight now pay off for life. Yearly checkups and vaccines on schedule.
Medium dog age chart
| Dog age | Human years |
|---|---|
| 1 | 15 |
| 2 | 24 |
| 3 | 29 |
| 4 | 34 |
| 5 | 39 |
| 6 | 44 |
| 7 | 49 |
| 8 | 54 |
| 9 | 59 |
| 10 | 64 |
| 11 | 69 |
| 12 | 74 |
| 13 | 79 |
| 14 | 84 |
| 15 | 89 |
| 16 | 94 |
| 17 | 99 |
| 18 | 104 |
Breeds in the medium group
For example:

Pet Health Record (printable) · $3.49
Vaccines, meds, weight and vet visits on one printable record, so every checkup starts with the full picture.
See it on Etsy →Other ages
Other sizes at this age: small, large, giant.
Questions people ask
Is a 1-year-old medium dog old?
At about 15 in human years, a 1-year-old medium dog is in the "puppy to young adult" stage.
Why do bigger dogs age faster?
Larger breeds tend to have shorter lifespans and reach their senior years sooner, so each year counts for more human years.
The Paw Plan shares general pet care information, not veterinary advice. Figures on this page are estimates calculated from the assumptions shown. Every pet is different, so check with your vet about yours.
Keep exploring
Dog age calculator
Any age, any size.
Open →Dog years to human years
The real chart.
Open →Dog age by size
Every age, every size.
Open →One easy pet-care tip a week.
Short, practical and friendly. Join free and get our printable pet emergency contact card right away.
