Pawaide Pet Calculator
Puppy Weight Calculator
Wondering how big your puppy will get? Estimate your puppy's full-grown adult weight in seconds.
Quick answer
Divide your puppy's current weight by the fraction of adult weight they've reached at their current age. This calculator does that automatically using breed-size growth curves.
How big will my puppy get?
A puppy's adult size depends on breed, current age and current weight. This calculator uses the growth-ratio method: at a given age, puppies have reached a predictable fraction of their adult weight. Small breeds finish growing around 9–12 months, while large and giant breeds keep growing until 18–24 months.
This is an estimate — genetics, nutrition and neutering timing all affect final size.
Good to know
Frequently asked questions
How can I predict my puppy's adult weight?
Divide your puppy's current weight by the fraction of adult weight they've reached at their current age. This calculator does that automatically using breed-size growth curves.
At what age do puppies stop growing?
Small breeds typically finish around 9–12 months, medium breeds by 12 months, and large or giant breeds may keep growing until 18–24 months.
Is the puppy weight prediction accurate?
It's a solid estimate, usually within about 10%. Final adult size varies with genetics, diet and overall health.
Methodology
Sources & references
More pet calculators
These calculators provide general estimates for educational purposes and are not a substitute for professional veterinary advice.