Green Iguana age in human years

Enter your Green Iguana's age in the calculator above. We use a science-based formula for reptiles — not the old "multiply by seven" rule — and show life stage and lifespan context with your result.

Green Iguanas are often cited as living around 18 years on average. Individual animals vary with diet, genetics, and care.

Pick Green Iguana (already selected here), enter age in years or use date of birth when available, then calculate. You'll see human-year equivalent, life stage, and how far through a typical lifespan your pet may be.