Dog age to human age converter

We used to think that every human year equated to 7 dog years, but this was just a guess off of overall lifespan: On average, humans live to about 70 years old, and dogs live to about 10 years old. We now know that dogs age rapidly in their first two years of life, and researchers studying Labradors have fine-tuned the formula even more. See the Labrador Study here, and further information here.