Devon Rex Age Calculator
Convert your Devon Rex's age to human years. Typical life expectancy 9–15 years.
Last reviewed July 2026 · Free · Nothing you enter is stored
9–15 yr lifespan
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Educational estimate. Your vet is the best judge of your Devon Rex's health stage.
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About the Devon Rex
The Devon Rex typically weighs 6–9 lbs as an adult and lives 9–15 years. Cats age uniformly across breeds, so this calculator applies the standard 15 + 9 + 4/year convention — what differs by breed is life expectancy and adult size.
Frequently asked questions
How do you calculate a Devon Rex's age in human years?
Cats age at a consistent rate regardless of breed: ~15 human years in year one, 24 by age two, then about 4 human years per cat year after that. Enter your Devon Rex's age above for the exact figure.
How long do Devon Rexs live?
The typical Devon Rex lives 9–15 years. Keeping cats indoors, maintaining a healthy weight, and twice-yearly senior vet visits push toward the top of that range.
How big does a Devon Rex get?
A healthy adult Devon Rex typically weighs 6–9 lbs. Use our cat food calculator to portion meals to your cat's actual weight and life stage.
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