**Note: The original "Senior Dogs Project" website uses imperial weights - that is, "Up to 20 lbs", "21-50 lbs", "51-90 lbs"
and "Over 90 lbs". I've converted these to metric using 1Kg = 2.204622622lbs and rounded to the nearest integer. Also note that
the weights in pounds are rounded to the nearest integer. Please also check out the chart on the
next page (refer below).**

Age | <10Kg | 10-25Kg | 25-40Kg | >40Kg | Averages |

5 | 36 | 37 | 40 | 42 | 39 |

6 | 40 | 42 | 45 | 49 | 44 |

7 | 44 | 47 | 50 | 56 | 49 |

8 | 48 | 51 | 55 | 64 | 55 |

9 | 52 | 56 | 61 | 71 | 60 |

10 | 56 | 60 | 66 | 78 | 65 |

11 | 60 | 65 | 72 | 86 | 71 |

12 | 64 | 69 | 77 | 93 | 76 |

13 | 68 | 74 | 82 | 101 | 81 |

14 | 72 | 78 | 88 | 108 | 87 |

15 | 76 | 83 | 93 | 115 | 92 |

16 | 80 | 87 | 99 | 123 | 97 |

17 | 84 | 92 | 104 | 130 | 102 |

18 | 88 | 96 | 109 | 137 | 108 |

19 | 92 | 101 | 115 | 145 | 113 |

20 | 96 | 105 | 120 | 152 | 118 |

Age Ranges: | Senior | <9.5Kg | 7 - 13 |

9.5 - 22.7Kg | 7 - 11 | ||

23.1 - 40.8Kg | 6 - 10 | ||

>40.8Kg | 5 - 10 | ||

Geriatic | <9.5Kg | 14 - 20 | |

9.5 - 22.7Kg | 12 - 20 | ||

23.1 - 40.8Kg | 10 - 20 | ||

>40.8Kg | 10 - 16 | ||

Calculated | >40.8Kg | 17 - 20 |

Equations: | <9.5Kg | Y = 4 * X + 16 | [1] |

9.5 - 22.7Kg | Y = 4.5162 * X + 14.985 | [2] | |

23.1 - 40.8Kg | Y = 5.3735 * X + 12.581 | [3] | |

>40.8Kg | Y = 7.3706 * X + 4.7751 | [4] | |

>40.8Kg | Y = 7.3496 * X + 4.9636 | [5] | |

Equation after extrapolating for ages 17 to 20, using [4] |

***** SOME OR ALL OF THE ABOVE EQUATIONS MAY WORK FOR X < 5, BUT THEY MAY NOT

AS THE DATA PROVIDED ON THE SOURCE WEBSITE RELATES ONLY TO "SENIOR" DOGS *****

Reference Page: "Aging Signs"

Main Homepage: "The Senior Dogs Project"

Powerpoint Presentation: K9 Ages In Human Years

Click here to use the "K9 to Human" and "Human to K9" Age Calculator

File Created On 11-Sep-2008 at 17:35:52

Source File: C:\Xlsfiles\Romana's History, etc\[A Dog's Age in Human Years.xls]Data Sheet

Please also feel free to view the chart on the next page.

This chart was shown on
"Mornings with Kerri-Anne" on the Nine Network, Australia, sometime ago.

This page © 2006, Paul Myers