Quick Answer
Use the calculator below to find your reptile's age in human years. The old "multiply by 7" rule is inaccurate — aging varies by size and breed.
How Old Is My Reptile in Human Years?
Lizard lifespans vary by species. Leopard geckos live 15-20 years; Bearded dragons 10-15 years.
With proper care, many reptiles exceed this average.
📊 Reptile to Human Age Conversion Chart
| Reptile Age | Human Equivalent | Life Stage |
|---|---|---|
| 1 year | ~5 human years | Juvenile |
| 3 years | ~15 human years | Young Adult |
| 8 years | ~40 human years | Adult |
| 15 years | ~70 human years | Senior |
🐾 Reptile Life Stages
Hatchling
0-2 monthsDelicate, frequent feeding.
Juvenile
2-12 monthsRapid growth, high food needs.
Adult
1-10+ yearsPrime years, established diet.
Senior
Later yearsSlower, may need care adjustments.
💚 How to Help Your Reptile Live Longer
Proper UVB Lighting
Essential for most species. Replace bulbs every 6-12 months.
Correct Temperatures
Basking spots and temperature gradients.
Calcium Supplementation
Prevents metabolic bone disease.
Appropriate Diet
Species-specific nutrition requirements.
Regular Vet Care
Exotic vet checkups for early problem detection.
Lifespan by Reptile Breed
Different breeds have different lifespans. Click for breed-specific aging info.
Frequently Asked Questions
How long do bearded dragons live?▼
How long do leopard geckos live?▼
Why do chameleons have shorter lifespans?▼
Track Your Reptile's Health Journey
Get age-appropriate care reminders, vet schedules, and health tracking for your reptile.
Trusted sources: AVMA Pet Care · UC San Diego Aging Study