Dog Size Calculator
Estimate your dog's adult weight based on current age and weight. Ideal for puppies to predict full-grown size.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator estimates your dog's adult weight based on breed size, current age, and current weight.
- Select Breed Size Category: Choose the category that best matches your dog's breed (e.g., Toy, Small, Medium, Large, Giant).
- Enter Current Age (weeks): Input your dog's age in weeks (1–208 weeks).
- Enter Current Weight (lbs): Input your dog's current weight in pounds (lbs).
- Click "Calculate": Press the button to see the estimated adult weight.
Result: The calculator displays the estimated adult weight in pounds. The formula uses a breed-specific growth factor to project weight based on the proportion of growth already completed.
Previous Results
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Frequently Asked Questions
The calculator provides an estimate based on average growth patterns. Actual adult weight can vary based on genetics, diet, and health.
Growth factors are derived from typical breed categories: Toy (0.85), Small (0.75), Medium (0.65), Large (0.55), Giant (0.45). These represent the proportion of adult weight at 1 year.
Yes, select the breed size category that best matches your dog's expected adult size based on parent breeds or current size.