Boston Terrier Age in Human Years: Free Calculator
Work out your Boston Terrier age in human years. Boston Terriers typically weigh 12–25 lb and live 11–13 years; enter your dog's age below.
A compact, short-muzzled companion breed. Size class: Small (under 20 lb (9 kg)). Senior from about 9 years.
Boston Terrier key numbers
| Typical adult weight | 12–25 lb (5.4–11.3 kg) |
| Typical lifespan | 11–13 years |
| Fully grown (adult) from about | 1 year |
| Senior from about | 9 years (≈52 human years) |
| Human age at 13 years | ≈68 |
| Daily calories, neutered adult | 399–692 kcal |
Boston Terrier 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 | Senior |
| 10 | 56 | 68 | Senior |
| 11 | 60 | 69 | Senior |
| 12 | 64 | 71 | Senior |
| 13 | 68 | 72 | Senior |
| 14 | 72 | 73 | Senior |
Feeding a Boston Terrier
At a typical adult weight of 19 lb (8 kg), a neutered adult needs roughly 552 kcal a day. Use the dog food calculator for your dog's own weight and food.
Frequently asked questions
How old is a Boston Terrier in human years?
A Boston Terrier's age in human years depends on size. A Boston Terrier is a small breed (12–25 lb), so on the size-based chart it is about 36 human years at 5 and 56 at 10. A typical Boston Terrier lifespan of 11–13 years is about 64 human years at the midpoint.
How long do Boston Terriers live?
Typically 11 to 13 years. A compact, short-muzzled companion breed.
When is a Boston Terrier a senior?
From around 9 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