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How Old is My Cat in Human Years?

Rebecca Schmidt • Oct 19, 2014

The simple chart for indoor cats is as follows (cat age on left, human years on right) : 

1 – 15 9 – 52 17 – 84
2 – 24 10 – 56 18 – 88
3 – 28 11 – 60 19 – 92
4 – 32 12 – 64 20 – 96
5 – 36 13 – 68 21 – 100
6 – 40 14 – 72
7 – 44 15 – 76
8 – 48 16 – 80
Many different components go into determining your cat’s age in human years. Indoor cats will live longer on average than outdoor cats. Cats who go outside have many dangers to face, from being hit by a car to being killed by a coyote. Outdoor cats may also get into fights with other cats and become injured. Outdoor cats are simply more likely to be hurt, carry parasites, and have viral or fungal infections.  

Some indoor cats will live longer than others. Here are some ways to keep your indoor cat healthy and extend your cat’s life : 
  • Regular veterinary visits. Twice a year for seniors and at least once a year for cats under 8. 
  • Proper nutrition – Cats thrive on a high protein, moderate fat and low carbohydrate diet. 
  • Yearly dental cleanings – By age 3, 85% of cats have dental disease. 
  • Core vaccinations – Even indoor cats need some vaccinations. 

Similar to us humans, genetics also plays a part. Even with all the proper nutrition and care, your cat’s life span is somewhat determined by his or her parents longevity. 

Fun fact : The oldest cat ever, lived to be 38 years of age. This is approximately 168 in human years!!!! 
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