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Cat
| Your Cat's Actual Age | Human Equivalent, in Years | Your Cat's Actual Age | Human Equivalent, in Years | |
| 3 mo | 6 | 11 yr | 60 | |
| 6 mo | 12 | 12 yr | 65 | |
| 1 yr | 18 | 13 yr | 68 | |
| 2 yr | 24 | 14 yr | 70 | |
| 3 yr | 28 | 15 yr | 75 | |
| 4 yr | 30 | 16 yr | 78 | |
| 5 yr | 34 | 17 yr | 80 | |
| 6 yr | 38 | 18 yr | 85 | |
| 7 yr | 45 | 19 yr | 90 | |
| 8 yr | 50 | 20 yr | 95 | |
| 9 yr | 55 | 21 yr | 100 | |
| 10 yr | 58 |
Dog/Human Equivalent, in Years
| Your Dog's Actual Age | Small dog | Medium Dog | Large Dog | Giant Breed Dog |
| 3 mo | 9 | 8 | 6 | 5 |
| 6 mo | 13 | 12 | 11 | 9 |
| 1 yr | 21 | 18 | 16 | 14 |
| 2 yr | 28 | 25 | 22 | 21 |
| 3 yr | 31 | 28 | 25 | 30 |
| 4 yr | 33 | 30 | 28 | 35 |
| 5 yr | 35 | 36 | 38 | 40 |
| 6 yr | 38 | 40 | 42 | 45 |
| 7 yr | 40 | 45 | 50 | 55 |
| 8 yr | 43 | 50 | 55 | 60 |
| 9 yr | 46 | 55 | 60 | 65 |
| 10 yr | 50 | 60 | 65 | 70 |
| 11 yr | 55 | 65 | 70 | 75 |
| 12 yr | 60 | 70 | 75 | 85 |
| 13 yr | 65 | 75 | 80 | 90 |
| 14 yr | 70 | 80 | 85 | 95 |
| 15 yr | 75 | 85 | 90 | 100 |
| 16 yr | 80 | 90 | 95 | |
| 17 yr | 85 | 95 | 100 | |
| 18 yr | 90 | 100 | ||
| 19 yr | 95 | |||
| 20 yr | 100 |