Chihuahua Growth Chart
Chihuahuas are one of the smallest breeds, with adult weight often set by 9–10 months. Even small gains are meaningful at this scale. Choose toy growth references and avoid comparing to medium or large puppy charts.
Chihuahua weight by age
Typical weight ranges based on Chihuahua adult size and standard growth curves. Individual puppies may vary.
| Age | Expected weight (low–high) |
|---|---|
| 8 weeks | 0.6–2 lb |
| 12 weeks | 1–2.7 lb |
| 16 weeks | 1.2–3.3 lb |
| 20 weeks | 1.5–3.8 lb |
| 24 weeks | 1.8–4.3 lb |
| 32 weeks | 2.3–5.3 lb |
| 40 weeks | 2.7–6 lb |
| 1 year | 2.7–6 lb |
Calculate Your Chihuahua Puppy's Adult Weight
Enter your Chihuahua puppy's age and current weight for an estimated adult weight range.
Enter your puppy's details to see the estimate
Chihuahua FAQ
How much will my Chihuahua puppy weigh as an adult?
Enter your puppy's age and current weight in this calculator. Typical adult Chihuahua ranges depend on sex, genetics, and whether the puppy is on a steady growth curve.
At what age is a Chihuahua fully grown?
Most Chihuahua dogs reach most adult weight between 10 and 18 months depending on size. Larger individuals may keep filling out slightly longer while bone and muscle finish developing.
How accurate is a Chihuahua puppy weight chart?
Charts reflect typical trends, not guarantees. Individual puppies may finish above or below the estimated range based on parents, nutrition, and overall health.