Puppy & Kitten Growth Predictor
Predict your puppy or kitten's adult weight based on their current age and weight using veterinary growth curves.
Predictions are estimates based on average growth curves. Actual adult weight depends on genetics, diet, and health.
Get even more in the Pet Capsule app
Log weight weekly, chart growth curves against breed averages, get alerts for abnormal growth, and receive feeding recommendations as your pet grows.
How Growth Prediction Works
Growth Curves
Puppies and kittens follow predictable growth curves. At any age, their weight as a percentage of adult weight follows a sigmoid pattern — rapid early growth that slows as they mature.
Size Matters
Small breeds reach adult weight by 10-12 months. Giant breeds keep growing until 18-24 months. This tool adjusts the growth curve based on expected adult size.
The Formula
We use the percentage-of-adult-weight method: if your pet is X% of their adult weight at their current age, we calculate the predicted total. This is the method most veterinarians use.
Growth Milestones by Size
Approximate percentage of adult weight reached at each age for dogs.
| Age | Small <10 kg | Medium 10-25 kg | Large 25-45 kg | Giant >45 kg |
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Track your pet's growth journey
Pet Capsule tracks weight over time, charts growth curves, and alerts you if growth stalls or accelerates unexpectedly — helping you catch health issues early.
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