Toy

Chihuahua Full Grown: Size & Weight

A full-grown Chihuahua weighs about 2–6 lb and stands roughly 5–8 in tall at the shoulder.

Adult Chihuahua

Have a Chihuahua puppy? Estimate its adult size

Built on the toy growth curve, clamped to the breed's range.

Chihuahua growth chart

How a toy-size dog like the Chihuahua fills out over its first months. Switch between percent of adult weight and pounds, and enter a weigh-in above to plot your puppy.

0% 25% 50% 75% 100% 0 3 6 9 12 15 18 Age (months)
  • Chihuahua

Median curves computed from ~89,000 healthy dogs aged 2–24 months in the open Salt et al. 2017 dataset (PLOS ONE, CC BY 4.0), grouped into PuppySize's five size classes.

Age % of adult weight Estimated weight
2 months 37.9% 1–2 lb
3 months 53.6% 1–3 lb
4 months 69.6% 1–4 lb
5 months 81.7% 2–5 lb
6 months 87.5% 2–5 lb
7 months 91.1% 2–5 lb
8 months 94.6% 2–6 lb
9 months 96.4% 2–6 lb
10 months 100% 2–6 lb

How confident is this estimate? Based on an official breed standard or cross-checked veterinary/registry sources.

About this breed's data: Weight is AKC official standard verbatim: not to exceed 6 lb (over 6 lb is a disqualification). The AKC standard states NO height; the ~5-8 in figure is a common breed-info reference, NOT from the standard. 'Teacup' is not an AKC category.

Sources: AKC Official Standard of the Chihuahua (PDF), Salt et al. 2017 (PLOS ONE) growth data.

How we calculate this

Chihuahua questions

How big do Chihuahuas get?
A full-grown Chihuahua typically weighs 2–6 lb and stands 5–8 in tall. Use the calculator above with your puppy's current age and weight for a personalized estimate.
When do Chihuahuas stop growing?
Most Chihuahuas reach their full adult size around 10 months, in line with toy-size dogs. They do most of their growing in the first 6 months, then fill out more slowly.
Are these Chihuahua size estimates accurate?
Based on an official breed standard or cross-checked veterinary/registry sources. Estimates are typically within 10–20% for purebreds; designer and mixed breeds vary more. We always show a range and clamp it to this breed's known adult size.

Similar-size breeds

Other toy-size breeds people compare with the Chihuahua.

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