FullCalculator

Puppy Adult Weight Predictor

Predict Adult Weight

Estimate your puppy's adult weight

lbs

Formula

Predicted Adult Weight = Current Weight / Growth Completion Percentage

Frequently Asked Questions

How can I predict my puppy's adult weight?
The most common method divides the puppy's current weight by their estimated growth completion percentage. Growth rate varies by breed size: toy breeds reach adult weight by 9-10 months, while giant breeds may not fully mature until 18-24 months.
At what age is a dog fully grown?
Toy and small breeds are usually fully grown by 9-12 months. Medium breeds reach full size around 12-15 months. Large breeds take 15-18 months, and giant breeds (Great Danes, Mastiffs) may continue growing until 18-24 months.

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