Puppy Adult Weight Formula:
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This calculator estimates a puppy's adult weight based on its current weight and age. The formula assumes linear growth rate during puppyhood, which provides a rough estimate for most breeds.
The calculator uses the following equation:
Where:
Explanation: The calculation assumes the puppy will grow at its current rate for a full year (52 weeks).
Details: This method provides a rough estimate. Accuracy varies by breed, with small breeds reaching adult weight sooner than large breeds. The calculation works best for puppies between 8-16 weeks old.
Tips: For best results:
Q1: How accurate is this calculation?
A: It's a rough estimate (±15%). Breed-specific growth charts provide more accuracy.
Q2: Does this work for all dog breeds?
A: It works reasonably well for medium-sized breeds. Giant breeds may exceed the estimate while toy breeds may be smaller.
Q3: What if my puppy is older than 16 weeks?
A: The calculation becomes less accurate as puppies approach adulthood. For dogs over 6 months, consider doubling their 4-month weight.
Q4: When do most puppies reach their adult weight?
A: Small breeds by 10-12 months, medium by 12-14 months, large by 18 months, giant breeds by 2-3 years.
Q5: Are there other methods to estimate adult size?
A: Yes, including paw size, parent weight averages, and breed-specific growth charts.