Adult Weight Formula:
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This calculator predicts 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 of final adult weight.
The calculator uses the following equation:
Where:
Explanation: The equation calculates the weekly growth rate and projects it to one year (52 weeks), which is when most dogs reach their adult weight.
Details: Knowing a puppy's potential adult size helps with proper nutrition planning, space requirements, exercise needs, and anticipating any size-related health concerns.
Tips: For best results, weigh your puppy at the same time each day (preferably morning before feeding). The prediction is most accurate between 12-20 weeks of age.
Q1: How accurate is this prediction?
A: It provides a rough estimate. Accuracy varies by breed, with large breeds often growing slower and small breeds faster than this linear model predicts.
Q2: When do dogs stop growing?
A: Small breeds typically reach full size by 10-12 months, medium by 12-15 months, and large/giant breeds may continue growing until 18-24 months.
Q3: Does this work for all dog breeds?
A: It works best for medium-sized breeds. Giant breeds grow more slowly and small breeds may reach adult weight sooner than predicted.
Q4: Can I use pounds instead of kilograms?
A: The formula works with any weight unit as long as you're consistent (use the same unit for puppy weight and adult weight).
Q5: What factors affect growth rate?
A: Nutrition, genetics, health status, and neutering/spaying timing can all influence final adult size.