A rough estimate based on typical growth curves for each size group. Real adult weight depends on breed, genetics, sex, neutering and nutrition. Predictions get more accurate after about 6 months of age. For a precise target, check your breed's standard or ask your vet.
How big will my puppy get?
This estimates your puppy's adult weight from its current age and weight.
What the terms mean
- How it works — puppies reach a fairly predictable percentage of their adult weight at each age, and the tool works backward from that.
- Size category (toy → giant) — it matters because small breeds finish growing much earlier than large ones.
How to use it
Treat it as a ballpark to plan food, crate size and budget — not a guarantee. Mixed breeds vary the most.
🩺 Vet note: For the best estimate, your vet can factor in breed, paw size and growth curves.
Common questions
How accurate is it?
A reasonable ballpark; purebreds are more predictable than mixes.
When do puppies stop growing?
Small breeds around 10–12 months; large and giant breeds 12–24 months.
My pup is bigger or smaller than predicted — should I worry?
Growth comes in spurts; track the trend and ask your vet if concerned.