About
About PuppyWeightCalc
PuppyWeightCalc is a free online tool built to answer the question every new puppy owner asks: how big will my puppy get?
What we do
We publish breed-specific growth charts for 80 pure breeds, plus interactive calculators that estimate your puppy's adult weight range from their current age and weight. Every estimate is based on typical growth patterns and breed weight ranges — never a single guaranteed number.
Free, no account needed
Every calculator, chart, and guide on this site is free. You don't need an account, and we never ask for your name or email to use the tools.
How the estimates work
Our model converts your puppy's age to weeks, applies a size-based growth curve, and anchors the result to the breed's typical adult range. Read the full methodology.
Not veterinary advice
PuppyWeightCalc estimates size, not health. It can't tell you whether your puppy's weight is healthy, and it's no substitute for your veterinarian. If your puppy is losing weight unexpectedly or not growing, talk to a vet.