There’s no reliable scientific way to calculate the relationship between human and cat years, but it’s generally agreed that the first two years of a cat’s life are roughly equal to the first 25 of a human’s, and after this, each additional year is around four ‘cat years’. This means if your cat is six years old, their equivalent cat age in human years will be around 41.

According to some sources, the world’s oldest cat lived to be 34 – that’s 153 in cat years! Some breeds will live longer than others – for example, on average Siamese and Manx breeds are said to live the longest, so could reach a ripe age in human years!