Dog Age Calculator
Convert your dog's age to human years using modern veterinary research.
Dog's Age
Size Category
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In Human Years
0
human years old
5y 0m
Dog Age
~0.0 yrs
Est. Remaining (Medium avg: 0 yrs)
Life Progress
42%
BirthAvg. Lifespan ~0 yrs
Age Conversion Chart (Medium Dog)
| Dog Age | Human Equivalent | Life Stage |
|---|---|---|
| 1 year | 15 human years | Adult |
| 2 years | 24 human years | Adult |
| 3 years | 28 human years | Adult |
| 5 years | 36 human years | Mature |
| 7 years | 47 human years | Mature |
| 10 years | 60 human years | Senior |
| 13 years | 74 human years | Senior |
| 15 years | 83 human years | Senior |
Fun Fact
Documentation
How It Works
The old "multiply by 7" rule is inaccurate. Modern research shows dogs age faster in their first years, then slow down. Larger breeds age faster than smaller ones.
UCSD DNA Model
Based on DNA methylation (epigenetic clock) research
Size Matters
- Small (<20 lbs): Age slowest, live 12-16 years.
- Medium (20-50 lbs): Avg 10-14 years.
- Large (50-90 lbs): Avg 8-12 years.
- Giant (90+ lbs): Age fastest, live 6-10 years.
Based on AKC and AVMA guidelines.
First year ≈ 15 human years.
Second year ≈ 9 additional years.
After that, 4-7 years per dog year (by size).
Frequently Asked Questions