Puppy Growth Chart Calculator
Predict Adult Weight
Formula
Predicted adult weight = current weight / growth completion percentage. Growth completion varies by breed size and age. Toy: mature ~40 weeks. Small: ~48 weeks. Medium: ~60 weeks. Large: ~72 weeks. Giant: ~90 weeks.
Frequently Asked Questions
How can I predict my puppy's adult weight?
The most common method is to divide your puppy's current weight by their growth completion percentage for their age and breed size. For example, a medium-breed puppy at 16 weeks is typically about 40% of adult weight. A 20-lb puppy at 16 weeks might grow to about 50 lbs. Paw size, parent weight, and breed standards also provide clues.
When do puppies stop growing?
Small and toy breeds typically reach adult size by 9-10 months. Medium breeds finish growing around 12-14 months. Large breeds may grow until 14-18 months, and giant breeds (Great Dane, Mastiff) can continue growing until 18-24 months. Height is usually reached before full weight/muscle.
Is my puppy growing at a normal rate?
Puppies generally double their birth weight by 1 week, and reach half their adult weight between 10-24 weeks depending on breed size. If your puppy is significantly above or below the expected growth curve, consult your veterinarian. Rapid growth in large breeds can lead to orthopedic problems.
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