🐱 Cat Age Calculator
Translate feline years into human years to understand life stages and plan age-appropriate care.
How to Use This Calculator
Enter your cat’s age
Use whole years or decimals (e.g., 0.5 for 6 months).
Convert to human years
Click the button to see the approximate human age equivalent.
Plan life-stage care
Use the result to discuss diet, wellness exams, and screenings with your veterinarian.
Formula
Year 1 ≈ 15 human years
Year 2 ≈ +9 human years
Each additional year ≈ +4 human years
These conversions reflect typical feline aging. Individual cats may age differently based on genetics, health, and lifestyle.
Full Description
Cats mature rapidly during their first two years, reaching adulthood around age 2. Afterward, aging slows, roughly equating to four human years per cat year. Monitoring age equivalents helps align veterinary care with life stage needs.
Senior cats (10+ human-equivalent years) often benefit from biannual checkups, joint support, and nutritional adjustments tailored for aging.
Frequently Asked Questions
Do indoor cats age more slowly?
Indoor cats often live longer due to fewer hazards, but the aging curve remains similar.
When is a cat considered senior?
Cats are typically considered senior around 11–12 years (≈ 60 human years).
Does breed affect aging?
Certain breeds may be predisposed to longer or shorter lifespans, but individual care plays a larger role.
Should I change diet based on age?
Yes. Transition to life-stage diets (adult, senior) as recommended by your veterinarian.