American alligator lifespan and age in human years
Longest recorded 77 years
🏆 The longest-lived american alligator on record reached 77 years in captivity.
American alligator (Alligator mississippiensis). The oldest known individual lived 77 years; this chart maps that record to a human age of 120. Most individuals live considerably shorter lives than the record.
- Reaches adulthood at about 12 years
- Adult weight about 150 kg
How old in human years?
Age
American alligator age chart in human years
Shaded rows are equivalent to human age 60+.
| American alligator | Human age | Stage |
|---|---|---|
| 5 yr | 8 | Child |
| 10 yr | 15 | Teen |
| 15 yr | 23 | Adult |
| 20 yr | 31 | Adult |
| 25 yr | 38 | Adult |
| 30 yr | 46 | Middle age |
| 35 yr | 54 | Middle age |
| 40 yr | 62 | Senior |
| 45 yr | 70 | Senior |
| 50 yr | 78 | Elderly |
| 55 yr | 85 | Elderly |
| 60 yr | 93 | Elderly |
| 65 yr | 101 | Elderly |
| 70 yr | 109 | Elderly |
| 75 yr | 117 | Elderly |
| 80 yr | 125 | Elderly |
| 85 yr | 133 | Elderly |
American alligator profile
| Classification | Reptilia > Crocodilia > Alligatoridae |
|---|---|
| Scientific name | Alligator mississippiensis |
| Adult weight | about 1.5e+02 kg |
| Age of maturity | 12 years |
| Longest recorded | 77 years (captivity) |
Sources
How we convert ages: method.
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