Human Years to Dog Years Calculator
Convert human age to the equivalent dog age
Human Age (years)
Dog Size
Human Years to Dog Years: How the Reverse Conversion Works
Most dog age calculators go forward — dog years to human years. Our human years to dog years calculator reverses this so you can understand what human age corresponds to a particular dog life stage. This helps you better understand your own age relative to your dog’s experience.
Human to Dog Years Conversion Chart
| Human Age | Small Dog | Medium Dog | Large Dog |
|---|---|---|---|
| 15 years | ~1 year | ~1 year | ~1 year |
| 24 years | ~2 years | ~2 years | ~2 years |
| 36 years | ~4.7 yrs | ~4.4 yrs | ~4 yrs |
| 56 years | ~9 yrs | ~8 yrs | ~7.3 yrs |
| 70 years | ~12 yrs | ~11 yrs | ~10 yrs |
FAQs
Is 1 human year equal to 7 dog years?
No — the “7 dog years” rule is a myth. Dogs age 15 human years in their first year, then the rate slows and varies by size. After age 2, each human year is roughly 4-7 dog years depending on breed size.
What human age is a 5-year-old dog?
A 5-year-old medium dog is approximately 39 human years old. For forward conversions, use our dog age calculator.
Conclusion
Our human years to dog years calculator makes the reverse conversion easy. For forward conversions (dog to human years), use our full dog age calculator. Pair both with our dog food calculator for stage-appropriate nutrition.
Did your human age surprise you in dog years? Share below!