Dog Age Calculator & Human Passport
Debunk the obsolete "1 dog year = 7 human years" myth. Calculate your dog's true biological age with the epigenetic DNA methylation clock (UCSD) and generate a shareable Human Age Passport for Instagram Stories & WhatsApp!
🐾 Dog Profile & Name
Dog's Name
For custom passport card
Or choose avatar:
🎂 Chronological Age
Current Age
Years & Months
Years
Months
🐕 Breed Size Category
Adult Weight / Breed Size
Small / Toy
< 10 kg (< 22 lbs)
Medium
10 – 25 kg (23 – 55 lbs)
Large
25 – 45 kg (56 – 99 lbs)
Giant Breed
> 45 kg (> 100 lbs)
🧬 Calculation Scientific Model
Scientific Methodology
Biological Human Equivalence
Max is
36
Human Years Old 🎉
Based on AAHA Medium Breed life stage curve
☕️ The Corporate Millennial
Established Adult Life
"Strict 9-hour sleep schedule, judges your lifestyle silently, expert sofa connoisseur."
Chronological Age
4.5 years
Size Category
Medium (10–25 kg)
Senior Status At
~8.5 years
Estimated Lifespan
12 – 14 years
MaunaPet App
Export Dog Health Passport
Track biological milestones, breed-specific health screenings, and wellness scores as your dog ages.
- Personalized life stage care recommendations
- Senior screening & joint health reminders
- Digital health passport ready for vet checkups
Dog Human Age Passport
Share this high-resolution certificate on Instagram Stories, TikTok, WhatsApp, or Facebook and challenge your friends to calculate their dog's age!
Dog Years to Human Years Comparison by Size
How dog size dramatically shifts the biological aging trajectory over time:
| Dog Age | Small (<10 kg) | Medium (10–25 kg) | Large (25–45 kg) | Giant (>45 kg) |
|---|---|---|---|---|
| 1 year | 15 yrs | 15 yrs | 14 yrs | 12 yrs |
| 2 years | 24 yrs | 24 yrs | 22 yrs | 20 yrs |
| 4 years | 32 yrs | 34 yrs | 35 yrs | 38 yrs |
| 6 years | 40 yrs | 42 yrs | 45 yrs | 52 yrs (Senior) |
| 8 years | 48 yrs | 51 yrs | 55 yrs (Senior) | 66 yrs |
| 10 years | 56 yrs | 60 yrs (Senior) | 66 yrs | 78 yrs (Geriatric) |
| 12 years | 64 yrs (Senior) | 69 yrs | 77 yrs (Geriatric) | 90+ yrs |
Frequently Asked Questions
The 7-year rule is a mathematical oversimplification. Dogs mature much faster than humans in their first two years (a 1-year-old dog is biologically similar to a 15-year-old human), but their aging curve flattens out thereafter. Furthermore, giant breeds age much faster than small breeds later in life.
Published by researchers at UC San Diego (Wang et al., 2020), the formula is Human Age = 16 × ln(Dog Age in Years) + 31. It tracks chemical methylation changes on DNA across canine lifespans compared to human lifespans.