Dog Age to Human Years Calculator

The Science Behind Dog Years and Human Age

The simple "multiply by 7" rule is widely outdated. Modern veterinary science acknowledges that **dog aging is complex and heavily dependent on breed size**, largely due to differences in metabolism and lifespan.

Our calculator uses a **size-adjusted aging model**:

• **First 2 years:** Aging is fast (equivalent to approximately 24 human years).
• **Small Breeds:** Age relatively slower after maturity, leading to longer lifespans.
• **Large and Giant Breeds:** Age significantly faster after maturity, leading to shorter lifespans and earlier senior years.

This calculator provides a more accurate life stage estimate, which is crucial for determining proper nutrition, exercise, and veterinary screening frequency.