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Enter age, weight, and breed to see your dog's unique trajectory.
Predict the adult weight of your crossbreed or mutt puppy.
Mixed breed puppies are biologically unique. Unlike purebreds with fixed growth standards, a mixed puppy's adult size is determined by the weighted genetic influence of its parents. Our calculator uses advanced mathematical modeling to average the growth curves of each constituent breed.
Mixed breeds often follow the maturity schedule of their largest genetic contributor. For example, a Great Dane mix may take up to 24 months to reach full physical maturity, while a Toy Poodle mix might be done growing in 9 months.
Weighted Average
90% Projection
12-24 Months
Parental Influence
Our calculator doesn't just multiply; it uses a Weighted Power-Law Curve. Large breeds grow for a longer duration (up to 24 months), while small breeds reach maturity faster (around 9-10 months). For mixed breeds, we calculate a custom Maturity Window by blending the genetic timelines of each breed in the mix.
Biological data shows that large-breed genetics (like Rottweiler or Mastiff) often dictate the duration of growth even in crossbreeds. If your puppy has more than 20% DNA from a large breed, our algorithm automatically shifts the growth curve to account for a longer maturity phase.
Every 1% of DNA counts. We perform a Weighted Genetic Average of the standard weight ranges for all constituent breeds. This creates a highly personalized "target zone" that is far more accurate than generic mutt charts.
While our calculator provides projections as early as 6 weeks, the weight at 12–16 weeks is the gold standard for accuracy. This is the window where birth nutrition influences fade and pure genetics take over the growth pattern.
We calculate a unique genetic standard by averaging the standard weight ranges of every breed in your puppy's DNA breakdown, adjusted for their specific percentages.
Unlike purebred calculators, we dynamically select a maturity timeline (between 40 and 104 weeks) based on the estimated adult size of the specific cross.
Most calculators assume linear growth (same gain every week). We use a proprietary High-Sensitivity Dynamic Model. Our algorithm recognizes that growth velocity is extreme in the first 12 weeks and decelerates sharply after 6 months. By shifting the mathematical exponent in real-time, we provide pinpoint accuracy for both young puppies and maturing teenagers.
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