반려동물 나이 계산기

This calculator uses modern age-conversion formulas that account for the nonlinear aging process in dogs and cats, replacing the outdated 'multiply by 7' rule. For dogs, we use size-adjusted formulas because small, medium, large, and giant breeds age at significantly different rates. Small dogs (under 10 kg) age more slowly after maturity — a 10-year-old small dog is roughly equivalent to a 56-year-old human. Large dogs (over 40 kg) age faster — a 10-year-old giant breed dog is roughly equivalent to a 66-year-old human. The first two years of a dog's life represent rapid maturation roughly equivalent to 15-24 human years. For cats, the formula recognizes that cats mature quickly in the first two years (roughly equivalent to 24 human years) then age approximately 4 human years for each subsequent cat year. Data sources: American Veterinary Medical Association (AVMA) guidelines, research by Wang et al. (2020) on epigenetic aging in dogs (published in Cell Systems), and International Cat Care age comparison guidelines. Limitations: Individual aging varies based on genetics, diet, healthcare, and lifestyle. Mixed-breed dogs may fall between size categories. Indoor cats typically age more slowly than outdoor cats due to reduced environmental stressors. These conversions are approximate guidelines, not precise medical assessments.