Puppy Weight Calculator
Estimate a puppy's future adult weight from its current weight and age.
Disclaimer: This is a general estimate for informational purposes only, not veterinary advice.
Calculate
Enter your values below.
Result
Estimated adult weight
0
Disclaimer: This is a general estimate for informational purposes only, not veterinary advice.
Formula used
Estimated adult weight = Current weight × (52 ÷ Age in weeks)
Example: 3 kg at 12 weeks → estimated adult weight ≈ 13 kg.
How to use this calculator
- Enter Current weight (kg), Current age (weeks).
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
How accurate is this estimate?
It's a commonly used rule of thumb, most reliable for puppies between about 8 and 20 weeks old — actual adult size varies by breed and individual growth patterns.
Does this work for all breeds?
It's a general approximation — very large or giant breeds especially may grow beyond simple linear projections.
Why does the formula use 52 weeks?
It assumes most breeds reach close to adult weight around 1 year (52 weeks) of age.
Where can I get a more accurate estimate?
Breed growth charts and your veterinarian can provide more tailored guidance.