Puppy Adult Weight Calculator
Predict how big your puppy will get.
Instant results✓ Source-backed
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How this is calculated
Based on published growth curves by adult size (Salt et al., PLOS ONE 2017; Waltham). Puppies follow an S-shaped curve and reach adult weight later the bigger the breed. Most reliable between 12 and 26 weeks; ±10% range shown.
Source-based educational tool; not independently reviewed by a veterinarian. Cited guidance does not imply endorsement by its authors.
Formula
Adult weight = current weight ÷ % of adult weight reached at this age (size-specific growth curve), shown ±10%
Assumptions
- •Healthy puppy on a balanced diet
- •Correct size class chosen
- •Most reliable at 12–26 weeks