The Puppy Weight Calculator helps you estimate your puppy’s adult weight based on current weight, age, and expected adult size. Simply fill in the fields above and click Calculate to get an instant result.
This calculator is part of Calculate Wiki’s Pet Calculators collection.
What You’ll Need
- Current Weight (lb)
- Current Age (weeks)
- Expected Adult Size
Formula Used
Estimated Adult Weight = (Current Weight ÷ Current Age in Weeks) × Typical Weeks to Maturity for the expected adult size category
Example Calculation
Using example inputs — Current Weight = 12 lb; Current Age = 16 weeks; Expected Adult Size = medium — the Puppy Weight Calculator returns:
| Value | Result |
|---|---|
| Current weight | 12 lb |
| Current age | 16 weeks |
| Estimated adult weight | 39 lb |
39 lb estimated adult weight. Rough estimate based on current growth rate — actual adult weight depends on breed and genetics.
Helpful Information
Results from the Puppy Weight Calculator are estimates based on standard formulas used in the pet calculators field. For projects with significant cost, health, or safety implications, consider verifying results with a qualified professional.