Dog Age Calculator
Convert your dog's age to human years. Our calculator accounts for size, which significantly affects how dogs age.
Dog Age Calculator
Convert your dog's age to human years based on size
How to Use This Calculator
- 1
Enter your dog's age
Input your dog's age in years and months.
- 2
Select dog size
Choose small (under 20 lbs), medium (20-50 lbs), large (50-100 lbs), or giant (over 100 lbs).
- 3
View human age equivalent
See your dog's age in human years, life stage, and average lifespan for their size.
Frequently Asked Questions
Is 1 dog year really 7 human years?
No, this is a myth. Dogs age faster in their first two years, then slow down. Size also matters - larger dogs age faster than smaller ones. Our calculator uses more accurate formulas.
Why does size affect dog aging?
Larger dogs have shorter lifespans and age faster. A Great Dane is considered senior at 6-7 years, while a Chihuahua might not be senior until 10-11 years.
What are the dog life stages?
Puppy (0-6 months), Junior (6 months-2 years), Adult (2-7 years), Mature (7-10 years), and Senior (10+ years). These vary by size.