Chart
Dog age chart by size
Dog years to human years, by size. Small dogs live longer and age more slowly than giant breeds, which is why a single multiplier never works.
Reference table
Human-age equivalents by size
Use this table for a quick lookup, or open the calculator for a specific breed.
| Dog age | Toy | Small | Medium | Large | Giant |
|---|---|---|---|---|---|
| 1 yr | 15 | 15 | 15 | 15 | 15 |
| 2 yr | 24 | 24 | 24 | 24 | 24 |
| 3 yr | 28 | 29 | 29 | 30 | 32 |
| 5 yr | 36 | 38 | 39 | 42 | 47 |
| 7 yr | 44 | 47 | 49 | 54 | 62 |
| 10 yr | 56 | 60 | 64 | 72 | 84 |
| 13 yr | 68 | 74 | 79 | 90 | 107 |
| 16 yr | 80 | 87 | 94 | 108 | 129 |
Senior age starts around 6.5 years for giant breeds and 10.5 for toy breeds.