Borzoi Life Expectancy and Age Calculator

Large Breed Senior From 5 Lifespan ~12.0 yrs

An elegant Russian sighthound built for speed across open snow — here's how a Borzoi's age converts to human years.

How long do Borzois live?

A typical UK life expectancy for the Borzoi is a median of about 12.0 years, from a 2024 analysis of UK dog records by Dogs Trust. The median is a midpoint from those records, not a guarantee that a dog will reach it or stop there.

In that study, larger dogs tended to have shorter lives than smaller ones, and flat-faced breeds shorter lives than dogs with a typical head shape. Signs your dog is a senior covers what to watch for as a dog gets older.

Source: Dogs Trust, longevity of UK dog breeds (2024), reporting McMillan et al., Scientific Reports.

Borzoi age in human years

Dog years	Human years	Life stage
1	15	Adolescent
2	24	Adult
3	28	Adult
4	32	Adult
5	36	Senior begins
7	50	Senior
8	55	Senior
10	66	Senior
12	77	Geriatric
13	82	Geriatric

Figures based on The Royal Kennel Club's published large-breed guidance, as tabulated by Purina UK. The same numbers power the widget above and the main calculator with Borzoi selected at 5 years. Want an exact figure including months? Use a decimal age in the widget (for example 7.5) or open the full calculator.

The Borzoi is classified by The Royal Kennel Club as a large breed, typically weighing 27–48 kg as an adult, with a median life expectancy of around 12.0 years, according to a 2024 analysis of UK veterinary records by Dogs Trust. Originally bred by Russian nobility to course wolves across open terrain, the Borzoi combines remarkable speed with a calm, dignified temperament at home.

That 12-year median is a midpoint from real UK clinical records — not a guarantee, and not a maximum. Plenty of dogs live a bit shorter or longer; the chart above is for converting the years you already have, not predicting the years still to come. Larger breeds tend to reach adulthood and old age faster than smaller ones. A 7-year-old Borzoi is about 50 in human years on the Royal Kennel Club large-breed table; a 7-year-old small breed is still in middle age on the small-breed table. See small vs large breed ageing for why size changes the maths.

Worked examples using this site's calculator

These are the same Royal Kennel Club large-breed figures the homepage uses — not a separate formula. The classic ×7 rule is shown only as a comparison; it is the rule this site exists to replace. More on that in Is the ×7 rule real?

Your Borzoi	RKC human years	×7 rule	What that stage usually means
3 years	28	21	Adult — ×7 understates the early years
5 years	36	35	Senior begins on the large-breed table
7 years	50	49	Solidly senior; ×7 is briefly close
10 years	66	70	×7 starts to overstate
12 years	77	84	Around the Dogs Trust median lifespan

Open the full calculator at 5 years, Borzoi already selected, or pick another age on this page. Birth-date entry, named results, and the share card live on the homepage, not in this widget.

What this means for your Borzoi

Like other deep-chested sighthounds, Borzois are at increased risk of bloat (gastric dilatation-volvulus) — knowing the warning signs and seeking emergency care immediately can be lifesaving. Cardiac issues, including dilated cardiomyopathy, are also reported in the breed.

Sighthounds including the Borzoi can be unusually sensitive to certain anaesthetics due to their low body fat, so it's worth flagging the breed to your vet before any procedure.

None of that is a diagnosis, and this page is not a substitute for your vet. The useful takeaway is practical: twice-yearly check-ups from around 5 dog years, a monthly look at body condition, and catching sudden changes early. That is the unglamorous version of healthy ageing.

When is a Borzoi considered a senior?

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

5 dog years maps to about 36 human years on the large-breed table. By 7 (about 50), many owners notice a slower rise from the bed and a shorter stride on the second walk. Gradual change is common; sudden lameness, rapid weight loss, or a new lump is the point to read when to take your senior dog to the vet rather than wait for the next routine slot.

Insurers do not have to use the same "senior from 5" line. A 5-year-old Borzoi is already in the senior life stage on this site, but a given UK insurer may still treat that dog as mid-life for a new quote — or may already apply a higher excess. If you are weighing cover, read pet insurance for older dogs alongside this chart rather than assuming the two clocks match.

How Borzois compare with other UK favourites

Borzois sit in the large band on this site. Nearby pages include Afghan Hound and Whippet — each page uses that breed's own size-band table, not a separate invented curve. The differences we do publish are lifespan midpoints from that same 2024 Dogs Trust UK veterinary analysis: about 11.1 for Afghan Hound, and about 13.4 for Whippet. Those are medians, not targets.

If you have two of those breeds at home, the breed comparison tool puts the ageing tables next to each other. It will not invent a different curve than the size-band maths already on each page.

Common questions

How long do Borzois live?

Source: Dogs Trust, longevity of UK dog breeds (2024), reporting McMillan et al., Scientific Reports.

How old is a 5-year-old Borzoi in human years?

About 36, using The Royal Kennel Club's large-breed guidance as tabulated by Purina UK. That is also the point this site treats as the start of the senior stage for Borzois. The ×7 rule would say 35 — close at some ages, then it drifts.

Why does a Borzoi count as senior earlier than a small dog?

Large breeds reach old age faster than small ones on the Royal Kennel Club tables this site uses. Small breeds are generally treated as senior from around 10 dog years; Borzois from around 5. It is a size-band guideline for care and check-ups, not a switch that flips overnight. See dog life stages explained.

Can I pre-fill the main calculator with Borzoi?

Yes. The homepage applies a shared link when an age is present, so use Borzoi at 5 years or 7 years, then change the age if you need a different figure. The widget on this page is the same large-breed maths in a shorter form.

Get the exact figure, to the month

Opens the homepage calculator with Borzoi selected at 5 years — the start of the senior stage on the large-breed table. Change the age for your own dog.

Open the Borzoi calculator

Compare: vs Afghan Hound · vs Whippet · vs Azawakh