Cat Age Calculator (Cat Years to Human Years)

Cat age calculator: convert your cat’s age to human years and see its life stage, using the veterinary (AAHA/AAFP) scale.

1st year = 15 · 2nd = +9 · then +4 per year

How to use this calculator

  1. Type your input in the box.
  2. The result updates as you type.
  3. Use “Copy result” or “Copy link” to share it.

A cat’s first year equals about 15 human years, the second adds 9, and each year after adds about 4. The old “multiply by 7” rule is inaccurate.

Frequently asked questions

How old is a 7-year-old cat in human years?

About 44.

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