Free canine age calculator that converts dog years to human years by age or birthday and adult size.
About Dog Age Calculator
Dog Age Calculator (also called a canine age calculator) estimates a dog's human-age equivalent from calendar age or birthday plus adult size (Small-Giant). Uses the AKC published age chart with monthly interpolation, charts, and reverse conversion. Educational estimates only—not a biological or veterinary assessment.
PlatformsWeb
LaunchedNov 1, 2026
✓ VerifiedNov 2, 2026
Key features
- Size-aware human-year estimates from the AKC chart
- Convert by calendar age or birthday
- Adult sizes Small through Giant
- Monthly interpolation and reverse conversion
- Runs without an account
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Dog Age Calculator
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