Chihuahua Weight Chart
Expected adult weight, growth by age and a calculator for your Chihuahua puppy. AKC weight: males up to 6 lb (3 kg), females up to 6 lb (3 kg).
- Male, AKC
- up to 6 lb (3 kg)
- Female, AKC
- up to 6 lb (3 kg)
- Growth-chart size class
- Toy
Predict your Chihuahua puppy's adult weight
Enter your puppy's age and weight to see an estimate.
Not veterinary advice. PuppySizer gives estimates from published sources. It cannot examine your pet. For any health concern, ask your own veterinarian. Read the full disclaimer.
Chihuahua male growth chart
Show the chart as a table
| Age | Typical male (lb) |
|---|---|
| 12 weeks | 2.2 |
| 16 weeks | 2.9 |
| 20 weeks | 3.4 |
| 26 weeks | 4.0 |
| 40 weeks | 4.8 |
| 52 weeks | 5.1 |
| 78 weeks | 5.6 |
| 104 weeks | 6.0 |
The curve ends at 6.0 lb (2.7 kg), the AKC upper limit (AKC gives no lower figure). On this curve a male reaches half of adult weight at about 17 weeks (4 months), 90 % at about 69 weeks (16 months) and 95 % at about 86 weeks (20 months).
Chihuahua female growth chart
Show the chart as a table
| Age | Typical female (lb) |
|---|---|
| 12 weeks | 2.3 |
| 16 weeks | 2.9 |
| 20 weeks | 3.4 |
| 26 weeks | 3.9 |
| 40 weeks | 4.6 |
| 52 weeks | 5.0 |
| 78 weeks | 5.5 |
| 104 weeks | 6.0 |
The curve ends at 6.0 lb (2.7 kg), the AKC upper limit (AKC gives no lower figure). On this curve a female reaches half of adult weight at about 17 weeks (4 months), 90 % at about 71 weeks (16 months) and 95 % at about 88 weeks (20 months).
Chihuahua weight by age
| Age | Male | Female |
|---|---|---|
| 12 weeks (3 mo) | 2.2 lb / 1.0 kg | 2.3 lb / 1.0 kg |
| 16 weeks (4 mo) | 2.9 lb / 1.3 kg | 2.9 lb / 1.3 kg |
| 20 weeks (5 mo) | 3.4 lb / 1.5 kg | 3.4 lb / 1.5 kg |
| 26 weeks (6 mo) | 4.0 lb / 1.8 kg | 3.9 lb / 1.8 kg |
| 40 weeks (9 mo) | 4.8 lb / 2.2 kg | 4.6 lb / 2.1 kg |
| 52 weeks (12 mo) | 5.1 lb / 2.3 kg | 5.0 lb / 2.3 kg |
| 78 weeks (18 mo) | 5.6 lb / 2.5 kg | 5.5 lb / 2.5 kg |
| 104 weeks (24 mo) | 6.0 lb / 2.7 kg | 6.0 lb / 2.7 kg |
Typical healthy dog, from the shape of the Salt et al. (2017) chart for the toy size class, scaled to the AKC weight. Healthy puppies vary around these values.
Chihuahua size questions
How big does a Chihuahua get?
The American Kennel Club gives up to 6 lb (3 kg) for males and up to 6 lb (3 kg) for females. Individual dogs can fall outside a breed range, and a mix or a dog from working lines may be larger or smaller.
When is a Chihuahua fully grown?
On this curve a male reaches half of adult weight at about 17 weeks (4 months), 90 % at about 69 weeks (16 months) and 95 % at about 86 weeks (20 months). On this curve a female reaches half of adult weight at about 17 weeks (4 months), 90 % at about 71 weeks (16 months) and 95 % at about 88 weeks (20 months). These ages come from the shape of the published growth chart for toy dogs, scaled to the AKC weight, so they describe a typical dog, not a particular one.
How much should a Chihuahua puppy weigh at 6 months?
A typical male is about 4.0 lb (1.8 kg) and a female is about 3.9 lb (1.8 kg) at 26 weeks on this curve. The range for healthy puppies is wide, so use the calculator above with your own puppy’s weight.
Other breeds in the same size class
Sources
- AKC breed pages (weight line only). American Kennel Club. Read 2026-11-08. Used for: Breed weight ranges, as numbers only. No AKC text is reproduced.
- Growth standard charts for monitoring bodyweight in dogs of different sizes. Salt C, Morris PJ, Wilson D, Lund EM, German AJ. PLoS ONE 12(9): e0182064 (CC BY 4.0). Read 2026-11-08. Used for: Centile growth curves for five size classes (adult weight under 40 kg) from 12 weeks to 2 years, built from Banfield Pet Hospital records. We read the values off the published charts.
AKC weight read on 2026-11-08 from akc.org/dog-breeds/chihuahua (numbers only). Facts last checked November 8, 2026.