FREE TOOL
🐕 Dog Age Calculator
Convert your dog’s age to human years using the 2020 scientific formula — more accurate than the old “multiply by 7” rule
Enter your dog’s details
Small
under 10 kg
Medium
10-25 kg
Large
25-45 kg
Giant
over 45 kg
Your dog’s age in human years
—
human years old
LIFE STAGE
—
SCIENTIFIC METHOD (2020)
—
16 × ln(age) + 31
OLD “×7” METHOD
—
age × 7 (less accurate)
Age milestones for your dog
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Note: The scientific formula (16 × ln(age) + 31) is based on 2020 research published in Cell Systems journal. Dog size also affects aging rate — larger breeds age faster. This calculator is for general reference only.