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How Old Is Your Dog in Human Years?

The "multiply by 7" rule is wrong. Calculate your dog's real human-equivalent age using the breed-adjusted logarithmic formula.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

Die Echte Umrechnung

Die 7-Jahre-Regel stimmt nicht. 1 Hundejahr ≈ 15 Menschenjahre. 2 Jahre ≈ 24. Danach: 4-5 Menschenjahre pro Hundejahr. Große Hunde altern schneller: eine Deutsche Dogge mit 7 ist geriatrisch; ein Dackel mit 7 ist im besten Alter.

Lebenserwartung

Kleine Rassen: 12-16 Jahre. Mittlere: 10-14. Große: 10-13. Riesenrassen: 6-10. Deutsche Schäferhunde: 9-13. Dackel: 12-16. Mischlingshunde leben oft 1-2 Jahre länger als gleichgroße Rassehunde.

⚡ CalcWolf Insight

A Purina Lifespan Study followed 48 Labrador Retrievers for their entire lives. Dogs kept at ideal body weight lived a median 1.8 years longer (13.0 vs 11.2 years) than dogs who were slightly overweight. This is the single most impactful thing owners can do for longevity.

Frequently asked questions
Mein Hund ist 5 — wie alt menschlich?
Klein: ~36. Mittel: ~38. Groß: ~40. Riesig: ~45.
Stimmt die 7-Jahre-Regel?
Nein. 1 Jahr = ~15 menschlich. Danach 4-5 pro Jahr.
✓ Math logic verified against primary sources → See our verification process
Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
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