Dog Year Calculator
Convert human years to dog years based on your dog's size. More accurate than the 7-year rule.
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Quick Reference Table
| Dog Age | Small | Medium | Large | Giant |
|---|---|---|---|---|
| 1 yr | 15 | 15 | 15 | 15 |
| 2 yr | 25 | 24 | 24 | 24 |
| 3 yr | 29 | 29 | 30 | 31 |
| 5 yr | 37 | 39 | 42 | 45 |
| 7 yr | 45 | 49 | 54 | 59 |
| 10 yr | 57 | 64 | 72 | 80 |
| 13 yr | 69 | 79 | 90 | 101 |
| 15 yr | 77 | 89 | 102 | 115 |
About Dog Years
The old 7:1 rule is inaccurate. Dogs age faster in their first two years and the rate varies by size. Small dogs tend to live longer than large dogs.
How We Calculate
- Year 1: About 15 human years
- Year 2: About 9 human years
- Years 3+: 4-7 years depending on size
Features
- Size-adjusted calculation
- More accurate than 7x rule
- 4 size categories
- 100% client-side
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Disclaimer: This tool is provided as-is for informational and educational purposes only.