Predicted Adult Weight of a 3 kg Labrador Puppy at 8 Weeks
Predict the adult weight of a large-breed puppy (like a Labrador) weighing 3 kg at 8 weeks old.
How to use this tool
- Weigh your puppy accurately.
- Enter their exact age in weeks.
- Select the expected adult breed size.
- The predicted adult weight is shown below — it's an estimate.
Eight weeks is a common age when puppies go to their new homes — use this tool to estimate how big your Labrador or large-breed puppy will grow.
Frequently asked questions
- How accurate is a puppy weight prediction?
- Predictions from weight-at-age formulas are estimates with ±15–20% error. Genetics, nutrition, and health all influence final adult size.
- When do puppies reach their adult weight?
- Small breeds reach adult weight by 9–12 months; medium breeds by 12–15 months; large and giant breeds can continue growing until 18–24 months.