About PupSize

A free, independent tool for one question every new puppy owner asks: how big will my dog get?

Many puppy calculators online are built by food brands or are hard to use on a phone. PupSize is independent, works without sign-up, and explains how it reaches its answer.

The estimates come from size-group growth curves and published breed ranges. Our methodology page explains exactly how, including the limits.

Not veterinary advice

PupSize gives estimates for planning things like crate size, food and budget. It can’t diagnose anything. If your puppy is growing unusually fast or slow, or you have any health concern, please talk to your vet.

Feedback

Spotted a breed range that looks wrong, or want a breed added? Contact: [add a contact email before launch]