Convert your spider's or tarantula's age to human years based on sex and species longevity.
Spider Details
Years
Pro Tip
Warmth and high feeding frequency fast-forward a spider's lifecycle. Cooler temps lead to slower growth but longer life.
Biological Age
6Years Old
Human Age Equivalent
A 2-year-old Female Mexican Red Knee is like a 6-year-old human.
Max Lifespan by Gender (Years)
About this calculator
The Eight-Legged Lifespan
Spiders, particularly tarantulas, show extreme sexual dimorphism in longevity. Females can live decades, while males often live only a few years after reaching maturity. Spiders can survive months without food by lowering their metabolism, which is key to their long-term survival.
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Pro Tips
Molting: Growth is marked by molting (ecdysis). Age is often better measured by 'instar' (number of molts).
Temperature: Warmer temperatures and high feeding frequency fast-forward a spider's lifecycle.
Longevity: A slow lifestyle with cooler temperatures typically leads to a longer overall lifespan.
Tarantulas: Some female Aphonopelma species can live for 30-40 years, rivaling many mammals.
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Fun Facts
"The oldest known spider, 'Number 16', lived to be 43 years old in Australia."
"Spiders use hydraulic blood pressure to move their legs, not just standard muscles."
"Jumping spiders have vision that allows them to track prey over significant distances."
"Males stop growing and focus entirely on reproduction after their 'ultimate molt'."
