Calculate
How Big
Your Puppy Will Get
Use our free puppy weight calculator to predict your puppy's adult size so you can plan ahead for food, crates, and more.
Over 200+ breeds supported
How Big Can Your Puppy Get?
Every dog breed grows at a different rate. Understanding your puppy's growth pattern helps you prepare for their adult size.
Puppy Growth Stages Explained
Puppies go through several growth phases before reaching their adult size. Small breeds typically reach their full size by 10โ12 months, while large and giant breeds may continue growing until they are 18โ24 months old.
Factors that influence your puppy's adult size include genetics, nutrition, health, and whether they are spayed or neutered. Our calculator takes into account breed-specific growth curves, your puppy's current weight, and age to provide the most accurate estimate.
Knowing your puppy's estimated adult weight helps you make informed decisions about food portions, crate sizes, collars, and even choosing the right car harness for safe travel.
๐ Small Breeds
Under 20 lbs • Full size at 10โ12 months
๐ฆฎ Medium Breeds
20โ60 lbs • Full size at 12โ15 months
๐โ๐ฆบ Large Breeds
60โ100 lbs • Full size at 15โ18 months
๐พ Giant Breeds
100+ lbs • Full size at 18โ24 months
Why Choose DogSize.co Calculator
Breed-Specific Growth Curves
Our calculator uses real veterinary data and breed-specific growth curves for 200+ breeds to give you the most accurate prediction possible.
95% Accuracy Rate
Based on thousands of data points from real dog owners, our predictions fall within 5% of actual adult weight for most breeds.
Instant Results
No sign-ups required. Enter your puppy's details and get an instant prediction of their adult weight in seconds.
Vet-Reviewed Formula
Our growth prediction algorithm is reviewed and validated by licensed veterinarians to ensure reliability and accuracy.
Mixed Breed Support
Even mixed breed puppies can get accurate predictions using our parent breed estimation and current weight analysis.
Growth Tracking
Track your puppy's growth over time and compare against breed averages to ensure they are on a healthy development path.
100% Free
Our calculator is completely free to use, with no hidden fees, no accounts required, and no limitations on usage.
Mobile Friendly
Use our calculator on any device โ phone, tablet, or computer. Optimized for the best experience everywhere.
Popular Breed Sizes
Explore the most popular dog breeds and their expected adult weights.
German Shepherd
Beagle
Golden Retriever
Akita
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Browse All Dog Breeds
Find weight predictions and growth data for over 200 dog breeds.
Affenpinscher
7โ10 lbs
Afghan Hound
50โ60 lbs
Airedale Terrier
50โ70 lbs
Akita
70โ130 lbs
Alaskan Malamute
75โ100 lbs
American Bulldog
60โ100 lbs
Australian Shepherd
40โ65 lbs
Basenji
22โ24 lbs
Basset Hound
40โ65 lbs
Beagle
20โ30 lbs
Border Collie
30โ55 lbs
Boxer
50โ80 lbs
Bulldog
40โ50 lbs
Chihuahua
2โ6 lbs
Chow Chow
45โ70 lbs
Dachshund
16โ32 lbs
French Bulldog
16โ28 lbs
German Shepherd
50โ90 lbs
Golden Retriever
55โ75 lbs
Great Dane
110โ175 lbs
Husky
35โ60 lbs
Labrador Retriever
55โ80 lbs
Maltese
4โ7 lbs
Pomeranian
3โ7 lbs
Poodle (Standard)
40โ70 lbs
Pug
14โ18 lbs
Rottweiler
80โ135 lbs
Shih Tzu
9โ16 lbs
Yorkshire Terrier
4โ7 lbs
