Quick Answer

Use the calculator below to find your lizard's age in human years. The old "multiply by 7" rule is inaccurate — aging varies by size and breed.

Lizard Age Calculator

How Old Is My Lizard in Human Years?

Lizard lifespans vary by species. Leopard geckos live 15-20 years; Bearded dragons 10-15 years.

Average Lizard Lifespan

Varies by species

With proper care, many lizards exceed this average.

⏰

10-20+ yrs

Lifespan range

🦎

Leo Gecko

15-20 years

🦎

Beardie

10-15 years

🦎

Chameleon

3-10 years

📊 Lizard to Human Age Conversion Chart

Lizard 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

🐾 Lizard Life Stages

Hatchling

0-2 months

Delicate, frequent feeding.

Juvenile

2-12 months

Rapid growth, high food needs.

Adult

1-10+ years

Prime years, established diet.

Senior

Later years

Slower, may need care adjustments.

💚 How to Help Your Lizard 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 Lizard Breed

Different breeds have different lifespans. Click for breed-specific aging info.

Leopard Gecko15-20 years Bearded Dragon10-15 years Crested Gecko15-20 years Blue Tongue Skink15-20 years Chameleon5-10 years Green Iguana15-20 years

Frequently Asked Questions

How long do bearded dragons live?▼

With proper care: 10-15 years. Improper husbandry (wrong UVB, diet) cuts lifespan significantly.

How long do leopard geckos live?▼

15-20 years with proper care. They're one of the longest-lived pet lizards. Some reach 25+.

Why do chameleons have shorter lifespans?▼

Chameleons are sensitive and age faster. Females have shorter lives due to egg production stress.

Track Your Lizard's Health Journey

Get age-appropriate care reminders, vet schedules, and health tracking for your lizard.

Start Tracking Free →Browse Lizard Breeds

Trusted sources: AVMA Pet Care · UC San Diego Aging Study