How Old Is Your Dog in Human Years? It's Not What You Think

The 7-year rule is a myth. Learn how dogs, cats, horses, and other pets really age — and use our free calculator to find your pet's true human age.

You have probably heard the old rule: multiply your dog's age by seven to get their human age. A 3-year-old dog is 21 in human years. A 10-year-old dog is 70. Simple math, easy to remember. Except it is wrong. The 7-year rule was a rough estimate created decades ago, and it does not reflect how dogs — or any pets — actually age. The truth is more interesting, and understanding it can help you take better care of your pet at every stage of their life. Dogs do not age at a steady rate. In their…

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