Convert Dog Age to Human Age
Dogs age at different speeds by size. This tool uses a popular rule: accelerated first 2 years, then size-based multipliers.
Quick Presets
Click to fill common age/size examples for quick comparison.
Years
Months
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Notes
- This is an approximate rule of thumb. Breed, weight and health can change aging speed.
- If you only know months, leave years empty and fill months.
- Puppies develop faster, so the first two years use higher multipliers.
Dog Age to Human Age Conversion Table (By Size)
| Dog's Age (Years) | Small Dogs (Human Years) | Medium Dogs (Human Years) | Large Dogs (Human Years) | Giant Dogs (Human Years) |
|---|---|---|---|---|
| 1 | 15 | 15 | 15 | 15 |
| 2 | 24 | 24 | 24 | 24 |
| 3 | 28 | 29 | 30 | 31 |
| 4 | 32 | 34 | 36 | 38 |
| 5 | 36 | 39 | 42 | 45 |
| 6 | 40 | 44 | 48 | 52 |
| 7 | 44 | 49 | 54 | 59 |
| 8 | 48 | 54 | 60 | 66 |
| 9 | 52 | 59 | 66 | 73 |
| 10 | 56 | 64 | 72 | 80 |
| 11 | 60 | 69 | 78 | 87 |
| 12 | 64 | 74 | 84 | 94 |
| 13 | 68 | 79 | 90 | 101 |
| 14 | 72 | 84 | 96 | 108 |
| 15 | 76 | 89 | 102 | 115 |
