Chihuahua Age in Human Years: Free Calculator
Work out your Chihuahua age in human years. Chihuahuas typically weigh 3–6 lb and live 14–16 years; enter your dog's age below.
The smallest breed, and among the longest-lived. Size class: Small (under 20 lb (9 kg)). Senior from about 11.5 years.
Chihuahua key numbers
| Typical adult weight | 3–6 lb (1.4–2.7 kg) |
| Typical lifespan | 14–16 years |
| Fully grown (adult) from about | 1 year |
| Senior from about | 11.5 years (≈62 human years) |
| Human age at 16 years | ≈80 |
| Daily calories, neutered adult | 141–237 kcal |
Chihuahua age in human years: year-by-year chart
| Dog age | Size-based chart | UCSD formula | Life stage |
|---|---|---|---|
| 1 | 15 | 31 | Adult |
| 2 | 24 | 42 | Adult |
| 3 | 28 | 49 | Adult |
| 4 | 32 | 53 | Adult |
| 5 | 36 | 57 | Adult |
| 6 | 40 | 60 | Adult |
| 7 | 44 | 62 | Adult |
| 8 | 48 | 64 | Adult |
| 9 | 52 | 66 | Adult |
| 10 | 56 | 68 | Adult |
| 11 | 60 | 69 | Adult |
| 12 | 64 | 71 | Senior |
| 13 | 68 | 72 | Senior |
| 14 | 72 | 73 | Senior |
| 15 | 76 | 74 | Senior |
| 16 | 80 | 75 | Senior |
| 17 | 84 | 76 | Senior |
Feeding a Chihuahua
At a typical adult weight of 5 lb (2 kg), a neutered adult needs roughly 191 kcal a day. Use the dog food calculator for your dog's own weight and food.
Frequently asked questions
How old is a Chihuahua in human years?
A Chihuahua's age in human years depends on size. A Chihuahua is a small breed (3–6 lb), so on the size-based chart it is about 36 human years at 5 and 56 at 10. A typical Chihuahua lifespan of 14–16 years is about 76 human years at the midpoint.
How long do Chihuahuas live?
Typically 14 to 16 years. The smallest breed, and among the longest-lived.
When is a Chihuahua a senior?
From around 11.5 years old, which is the last quarter of a typical lifespan. Ask your vet about senior check-ups before then.
Other small breeds
See all breeds · General dog age calculator