How Big Will a 5 kg Puppy at 12 Weeks Get?
Estimate the adult weight of a medium-to-large breed puppy weighing 5 kg at 12 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.
At 12 weeks a puppy's growth curve is well established — enter current weight and expected size to get a reliable adult weight estimate.
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.