Quick Answer
Use the calculator below to find your guinea pig's age in human years. The old "multiply by 7" rule is inaccurate — aging varies by size and breed.
How Old Is My Guinea Pig in Human Years?
Guinea pigs live longer than many small pets—5-7 years with proper care. Some reach 8-10 years.
With proper care, many guinea pigs exceed this average.
📊 Guinea Pig to Human Age Conversion Chart
| Guinea Pig Age | Human Equivalent | Life Stage |
|---|---|---|
| 6 months | ~5 human years | Young |
| 1 year | ~10 human years | Adolescent |
| 3 years | ~30 human years | Adult |
| 5 years | ~50 human years | Mature |
| 7 years | ~70 human years | Senior |
🐾 Guinea Pig Life Stages
Baby
0-8 weeksBorn relatively mature, weaned at 3-4 weeks.
Young
2-6 monthsRapid growth, establish diet.
Adult
6 months-4 yearsPrime years, maintain vitamin C.
Senior
4-7 yearsWatch for health issues, dental care.
💚 How to Help Your Guinea Pig Live Longer
Daily Vitamin C
Guinea pigs cannot make vitamin C. Bell peppers, leafy greens daily.
Unlimited Hay
Timothy hay keeps teeth and gut healthy.
Companionship
Guinea pigs are social—pairs live longer.
Large Enclosure
Minimum 7.5 sq ft for a pair.
Regular Vet Checks
Exotic vet care catches issues early.
Lifespan by Guinea Pig Breed
Different breeds have different lifespans. Click for breed-specific aging info.
Frequently Asked Questions
How long do guinea pigs live?▼
What's the oldest guinea pig?▼
Why do some guinea pigs live longer?▼
Track Your Guinea Pig's Health Journey
Get age-appropriate care reminders, vet schedules, and health tracking for your guinea pig.
Trusted sources: AVMA Pet Care · UC San Diego Aging Study