Convert dog years to human years by size
This dog age calculator converts your dog's age into human years using the modern, size-adjusted formula vets use — not the old "7 years" myth. Calculated privately in your browser, free.
<iframe src="https://snaptoolsuite.com/dog-age-calculator/?embed=1"
style="width:100%;max-width:560px;height:720px;border:0;"
title="Dog Age Calculator" loading="lazy"></iframe>
<p>Free <a href="https://snaptoolsuite.com/dog-age-calculator/">Dog Age Calculator</a> by Snap Tool Suite</p>See it live: view a real embed example →
~15 human years for year one, ~24 by age two, then +4–6 per year by size. This tool uses that formula.
No — that's a myth. Dogs age fast early then steadily, and bigger dogs age faster.
Yes. 100% free, everything runs in your browser.
🔒 Everything is calculated in your browser. We don't store or sell your data. Estimate only.