Saint Bernard in human years

Size class: Giant (over 40 kg / 88 lb) · Average lifespan: 8–10 years · Senior age: 6+ · AKC group: Working

Breed

Your dog's age (years)

In human years

Full age chart

Year-by-year human-equivalent ages for a giant-sized breed like the Saint Bernard.

Saint Bernard age	Human-equivalent	Life stage
1 year	15 human years	Puppy/Adolescent
2 years	26 human years	Adult
3 years	35 human years	Adult
4 years	44 human years	Adult
5 years	53 human years	Adult
6 years	62 human years	Senior
7 years	71 human years	Senior
8 years	80 human years	Senior
9 years	89 human years	Senior
10 years	98 human years	Senior
11 years	107 human years	Senior
12 years	116 human years	Senior
13 years	125 human years	Senior
14 years	134 human years	Senior
15 years	143 human years	Senior
16 years	152 human years	Senior
17 years	161 human years	Senior
18 years	170 human years	Senior

About the Saint Bernard's ageing

The Saint Bernard is a giant breed with an average lifespan of 8 to 10 years. Like other giant-sized dogs, the Saint Bernard ages most rapidly in its first two years — reaching the rough equivalent of a 26-year-old human by its second birthday — and then ages more steadily.

Saint Bernards typically reach senior status around 6 years old. From that point on, screening for joint, dental and weight-related conditions becomes especially valuable. Giant-class breeds tend to be prone to hip, elbow and cardiac issues; many owners begin joint supplementation and twice-yearly vet visits at this stage.

If your Saint Bernard is approaching the high end of its expected lifespan (10+ years), you're already doing something right. Continue to monitor mobility, appetite, weight and behaviour — and adjust food, exercise and vet check-up frequency accordingly.