Calculating Dog's equivalent human Age and visa versa

NOTE: The minimum valid age for a dog when using the K9 to human routines is 5 years. Whilst the routines may return what appear to be valid results for K9 ages less than 5, it is more likely that they will not be valid. The same is true for the routines converting human to K9 years. This is based on the source of the data being the "The Senior Dogs Project" (see below) and not a more general website. Thank you for your understanding.

Index

References and General Comments
K9 to Human Age - Dog less than 9.5Kg
K9 to Human Age - Dog 9.5 to 22.7Kg
K9 to Human Age - Dog 22.8 to 40.8Kg
K9 to Human Age - Dog greater than 40.8Kg
K9 to Human Age - Average
Human to K9 Age - Dog less than 9.5Kg
Human to K9 Age - Dog 9.5 to 22.7Kg
Human to K9 Age - Dog 22.8 to 40.8Kg
Human to K9 Age - Dog greater than 40.8Kg
Human to K9 Age - Average

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 one decimal place. Also note that the weights in pounds are rounded to the nearest integer.

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References and General Comments

The following calculations are based on equations arrived at from creating an Excel spreadsheet from data obtained from the website "The Senior Dogs Project" (TSDP), converting the data to a series of scatter graphs and then determining the equations for the lines of best fit. The specific data used is located on the page http://www.srdogs.com/Pages/care.gt.html under the first heading, "Aging Signs". Other topics covered in this section of the TSDP website include:

Recommendations for Veterinary Attention for an Aging Dog
Alternative Veterinary Medicine in Senior Dog Health
Anesthesia for Older Dogs
Dental Care
and much more

A copy of the Excel spreadsheet (Excel 2003) file is available here.
Click here to see the "A_Dog's_Age_in_Human_Years" Excel spreadsheet as a webpage.

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Enter Dog's Age Here
K9 Age (Input)	Human Age (Output)

Enter Dog's Age Here
K9 Age (Input)	Human Age (Output)

Enter Dog's Age Here
K9 Age (Input)	Human Age (Output)

Enter Dog's Age Here
K9 Age (Input)	Human Age (Output)

Enter Dog's Age Here
K9 Age (Input)	Human Age (Output)

Enter Dog's Age Here
Human Age (Input)	K9 Age (Output)

Enter Dog's Age Here
Human Age (Input)	K9 Age (Output)

Enter Dog's Age Here
Human Age (Input)	K9 Age (Output)

Enter Dog's Age Here
Human Age (Input)	K9 Age (Output)

Enter Dog's Age Here
Human Age (Input)	K9 Age (Output)

URL for this homepage: http://pmyers.pcug.org.au/K9Pets/CalcK9toHumanAges.html

Index

References and General Comments

Calculating K9 to Human Age (Dog <9.5Kg)

Calculating K9 to Human Age (Dog 9.5 to 22.7Kg)

Calculating K9 to Human Age (Dog 22.8 to 40.8Kg)

Calculating K9 to Human Age (Dog >40.8Kg)

Calculating K9 to Human Age (Average)

Calculating Human to K9 Age (Dog <9.5Kg)

Calculating Human to K9 Age (Dog 9.5 to 22.7Kg)

Calculating Human to K9 Age (Dog 22.8 to 40.8Kg)

Calculating Human to K9 Age (Dog >40.8Kg)

Calculating Human to K9 Age (Average)