St. Bernard Age Calculator: Dog Years to Human Years

St. Bernard age in human years

Dog years	Human years	Life stage
1	12	Adolescent
2	22	Adult
4	38	Adult
5	45	Senior begins
8	64	Senior
12	93	Geriatric

Figures based on The Royal Kennel Club's published giant-breed guidance, as tabulated by Purina UK. For an exact figure, try the Dog Years calculator.

The St. Bernard is classified by The Royal Kennel Club within the giant ageing band, typically weighing 64–120 kg as an adult. Bred by monks at the Great St Bernard Hospice in the Swiss Alps to locate and rescue stranded travellers, the St. Bernard is famous for its gentle, patient temperament as much as its enormous size.

What this means for your St. Bernard

Hip and elbow dysplasia, bloat, and heart conditions are all significant considerations for a breed of this size, alongside a shorter typical lifespan common to giant breeds. As with most giant breeds, growth needs to be managed carefully during puppyhood to avoid stressing developing joints.

Feeding smaller, more frequent meals rather than one large meal can help reduce bloat risk in a deep-chested breed like this, and this becomes increasingly relevant as your dog ages.

When is a St. Bernard considered a senior?

Under The Royal Kennel Club's size-adjusted guidance, giant breeds like the St. Bernard are generally considered senior from around 5 dog years old.

Related reading: Is the ×7 Rule Real? · Dog Life Stages Explained · Signs Your Dog Is Entering Its Senior Years

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