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.
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Browse All Dog Breeds
Find weight predictions and growth data for over 200 dog breeds.
Affenpinscher
7 - 10 pounds
Afghan Hound
50 -60 pounds
Airedale Terrier
50 - 70 pounds
Akita
70 - 130 pounds
Alaskan Malamute
75 - 85 pounds
American English Coonhound
45 - 65 pounds
American Eskimo Dog
6 - 35 pounds
American Foxhound
60 - 70 pounds
American Hairless Terrier
12 - 28 pounds
Anatolian Shepherd Dog
80 - 150 lbs
Australian Cattle Dog
35 - 50 pounds
Australian Shepherd
40 - 65 lbs
Australian Terrier
15 - 20 pounds
Azakawh
33 -55 pounds
Barbet
35 - 65 pounds
Basenji
22 -24 lbs
Basset Hound
40 - 65 pounds
Beagle
20 - 30 lbs
Bearded Collie
45 - 55 pounds
Beauceron
70 - 110 lbs
Belgian Malinois
40 - 80 pounds
Belgian Tervuren
45 - 75 lbs
Bernese Mountain Dog
70 - 115 pounds
Bichon Frise
12 - 18 pounds
Black and Tan Coonhound
65 - 110 pounds
Black Russian Terrier
80 - 130 lbs
Bloodhound
80 - 110 lbs
Border Collie
30 - 55 lbs
Border Terrier
11.5 - 15.5 lbs
Borzoi
60 - 105 pounds
Boston Terrier
11.5 - 15.5 pounds
Boxer
65 - 80 pounds
Briard
55 - 100 lbs
Brittany
30 - 40 pounds
Brussels Griffon
8 -10 pounds
Bull Terrier
50 - 70 pounds
Bulldog
40 - 50 pounds
Bullmastiff
100 - 130 lbs
Cairn Terrier
13 -14 pounds
Canaan Dog
35 - 55 pounds
