Puppy Growth Calculator
Estimate your puppy's adult weight based on current age and weight. Helps plan nutrition and care.
Published by:
isCalculator Editorial Team
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How to use this tool?
Follow these steps to estimate your puppy's adult weight:
- Enter Current Age – Input your puppy's age in weeks (1–52). Use decimals for partial weeks (e.g., 12.5).
- Enter Current Weight – Input your puppy's current weight in pounds (lbs). Must be greater than 0.
- Select Size Category – Choose the expected adult size based on breed or your best guess:
- Small – adult under 20 lbs
- Medium – adult 20–50 lbs (default)
- Large – adult 50–100 lbs
- Giant – adult over 100 lbs
- Click "Calculate Adult Weight" – The estimated adult weight appears below in pounds.
Note: All weights must be in pounds. The formula adjusts for growth rate based on size category and current age. Results are estimates; actual growth varies by breed and individual.
Previous Results
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Frequently Asked Questions
The calculator provides an estimate based on typical growth patterns. Actual adult weight can vary due to breed, genetics, and nutrition. Use it as a general guide.
You need your puppy's current age in weeks, current weight in pounds, and size category (small, medium, large, or giant).
Yes, but the size category should match the expected adult size of the breed. For mixed breeds, use your best guess.