Track your puppy's weight-by-age against standard breed-size growth curves. See if your puppy is on track for healthy development with percentile ranges.
Watching your puppy grow is one of the most exciting parts of pet ownership, but it's important to ensure they're developing at a healthy rate. Puppies that grow too fast — especially large breeds — can develop joint and bone problems, while underweight puppies may not be getting adequate nutrition.
This Puppy Growth Chart Calculator lets you compare your puppy's current weight against standard growth curves for small, medium, large, and giant breed dogs. Simply enter your puppy's age in weeks and current weight, select their breed size category, and instantly see whether they're tracking within normal developmental ranges.
The calculator uses veterinary growth data that maps expected weight as a percentage of adult weight at various ages. Most puppies reach 50% of their adult weight by around 4-5 months and 90% by 9-12 months depending on breed size, with giant breeds taking up to 18-24 months to fully mature.
Regular weight monitoring catches nutritional deficiencies, overfeeding, and health issues early. A puppy falling below the growth curve may have parasites, digestive problems, or need a food change. A puppy far above the curve — particularly in large breeds — may need calorie reduction to protect developing joints. This calculator gives you objective data to share with your veterinarian at checkups.
Expected weight at age = Expected adult weight × growth percentage at age Growth percentage by age (approximate): 8 weeks: ~15% of adult weight 16 weeks: ~30% 24 weeks: ~50% 36 weeks: ~75% 52 weeks: ~90-100% (small/medium) or ~80% (large/giant)
Result: On track — expected ~21 lbs at 16 weeks
A large breed puppy expected to weigh 70 lbs as an adult should be around 30% of adult weight at 16 weeks, or approximately 21 lbs. At 20 lbs, this puppy is within the normal range and tracking well along the growth curve.
Puppy growth follows a predictable S-curve. The fastest growth occurs between 2-6 months when puppies may gain several pounds per week for large breeds. Growth then gradually slows, tapering off as the puppy approaches their adult weight.
Small breed puppies reach maturity quickly, often by their first birthday. Giant breeds like Great Danes take up to two years. This difference means large breed puppies need carefully controlled nutrition — high-protein, moderate-calorie diets designed for large breed growth to prevent skeletal problems.
Bringing a growth log to your vet appointments helps them spot trends you might miss. A puppy consistently below the curve may need testing for parasites or metabolic issues, while one consistently above may benefit from a feeding adjustment.
Small breeds typically reach full size by 10-12 months, medium breeds by 12-14 months, large breeds by 14-18 months, and giant breeds may not finish growing until 18-24 months. Bone growth and muscle filling continue after height is reached.
You should be able to feel (but not prominently see) your puppy's ribs. If ribs are very visible, consult your vet before increasing food. Worm infestations are a common cause of underweight puppies.
Yes, especially for large and giant breeds. Rapid growth increases the risk of hip dysplasia, osteochondritis, and other developmental orthopedic diseases. Controlled, steady growth is healthier than maximum growth.
They provide good general guidelines, but individual puppies vary based on genetics. A puppy from smaller parents within a breed will naturally track lower. The curves represent averages across the breed size category.
Estimate the expected adult weight based on the parents (if known) or your vet's estimate, then use the corresponding size category. Mixed breeds generally follow the same growth patterns as purebreds of similar size.
Small fluctuations are normal, especially around meal times or after exercise. Weigh at the same time of day for consistency. If weight drops or plateaus for more than 2 weeks, consult your veterinarian.