Estimate the human-equivalent age of a dog or cat using a faster early-life curve and size-adjusted dog aging.
Human-Equivalent Age
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Enter the pet type and age to estimate a human-equivalent age and general life stage.
Tap an example to prefill the calculator with sample values.
Medium adult dog
A 4 year, 6 month medium dog
Shows the faster first-two-years aging curve before size-adjusted aging settles in.
Result: The human-equivalent age moves into mature-adult territory quickly after the second year.
Senior cat
A 12 year old cat
A common cat-aging example that lands squarely in the senior stage.
Result: Cats age rapidly at first, then settle into a slower additional-years curve.