📏 Dog Size Calculator
Estimate how large your puppy will grow, helping you plan nutrition, accessories, and living space.
Growth reminder
Genetics and nutrition influence growth. Use regular weigh-ins to refine predictions.
How to Use This Calculator
Weigh your puppy regularly
Use a scale or weigh yourself holding the puppy, then subtract your weight.
Determine age in weeks
Accurate age improves multiplier accuracy, especially for rapid growth periods.
Select the closest breed size group
Choose the group that matches your dog’s expected adult size. Mixed breeds can use parental averages.
Formula
Estimated Adult Weight = Current Weight ÷ Growth Multiplier
Multipliers vary by age and breed size. For example, at 16 weeks, many medium breeds have reached ~60% of adult weight.
Full Description
Growth charts help anticipate adult size, guiding crate purchases, feeding plans, and exercise expectations. Genetics, nutrition, and health conditions can accelerate or slow growth.
Regular veterinary visits ensure your puppy grows proportionally and identifies orthopedic or metabolic concerns early.
Frequently Asked Questions
How accurate is this estimate?
It provides a general idea. Genetics and diet can shift adult weight by several pounds.
Should I adjust for underweight puppies?
Yes. Work with your vet to ensure weight gain catches up before predicting adult size.
Do mixed breeds follow the same patterns?
Use parental sizes to choose the closest breed category. Mixed breeds often fall between chart ranges.
What about height predictions?
Height correlates with weight but varies widely. Ask your vet for breed-specific height charts.