Puppy Weight Calculator
Predict how big your puppy will get based on current weight and age. Works best with breed information.
Understanding Puppy Growth Stages
Puppies grow at different rates depending on their breed size. Small breed puppies reach their adult weight quickly, often by 10 months, while giant breeds may continue growing until they are 2 years old. Knowing your puppy's expected adult size helps you plan for proper nutrition, equipment sizing, and healthcare needs.
Toy/Small
Adult by 10-12 months
Medium
Adult by 12-15 months
Large
Adult by 15-18 months
Giant
Adult by 18-24 months
Frequently Asked Questions
How can I predict my puppy's adult weight?
A common formula: Adult weight = Current weight ÷ Current age in weeks × 52. However, breed size matters - toy breeds reach adult weight by 10 months, while giant breeds may grow until 18-24 months.
When do puppies stop growing?
Small breeds stop growing at 10-12 months, medium breeds at 12-15 months, large breeds at 15-18 months, and giant breeds continue growing until 18-24 months.
How accurate are puppy weight predictions?
Predictions are most accurate for purebred puppies. For mixed breeds, look at paw size and parent weights if known. Predictions become more accurate as the puppy ages.
Why is my puppy smaller or larger than predicted?
Factors like nutrition, health, genetics, and whether they're neutered can affect final size. Proper nutrition is crucial - both underfeeding and overfeeding can affect growth.
Should I feed my puppy more to help them grow bigger?
No, overfeeding can lead to orthopedic problems, especially in large breeds. Feed according to guidelines and let your puppy grow at their natural pace.
How do I know if my puppy is a healthy weight?
You should feel ribs easily without pressing hard, see a waist from above, and see an abdominal tuck from the side. Your vet can assess body condition score.