Predict a puppy's adult weight from current weight and age.
Puppy growth decelerates, so a sixteen-week puppy has already reached a large share of adult weight for a small breed but much less for a giant one. Predictions before about eight weeks are unreliable. Predicted adult weight determines food quantity, joint supplement decisions and whether a large breed diet is appropriate, all of which matter during growth.
Dog Breed Size Predictor
Adult weight = current weight ÷ growth fraction, where growth follows a decelerating curve
Adult weight = current weight ÷ growth fraction, where growth follows a decelerating curve Puppy growth decelerates, so a sixteen-week puppy has already reached a large share of adult weight for a small breed but much less for a giant one. Predictions before about eight weeks are unreliable.
Predicted adult weight determines food quantity, joint supplement decisions and whether a large breed diet is appropriate, all of which matter during growth.
This calculator takes 3 inputs: Current weight, Current age, Expected breed size. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.