Dog breed calculator

Chihuahua Age Calculator

Chihuahuas are small companion dogs that generally live about 14 to 16 years.

Typical adult weight
3–6 lb
Typical lifespan
14–16 years

Calculate your dog's age

Dog and Cat age in human years comparison illustration

300 pets calculated using science-backed models

Free · No sign-up required · A general guide, not veterinary advice.

Chihuahua dog years to human years chart
Chihuahua ageEstimated human age
1 yearAbout 15 human years
2 yearsAbout 24 human years
3 yearsAbout 28 human years
4 yearsAbout 32 human years
5 yearsAbout 36 human years
6 yearsAbout 40 human years
7 yearsAbout 44 human years
8 yearsAbout 48 human years
9 yearsAbout 52 human years
10 yearsAbout 56 human years
11 yearsAbout 60 human years
12 yearsAbout 64 human years

How this estimate works

This page uses a shared size-based dog age model. The breed profile sets the calculator's default adult size; choose the size that best matches your dog's adult weight for the calculator result. It is a general estimate, not a medical measurement; health, lifestyle, and individual history can change how a dog ages.

Use the result as practical guidance and ask your veterinarian about your dog's individual health needs.