senior dog lying down

How Old Is My Dog In Human Years?

Check the tables below to see how old your dog is in human years!

Some changes in your pet's behaviour, such as slowing down, sleeping more and being a bit less mobile are often considered to be normal due to age but often indicate underlying pain or discomfort such as arthritis. Changes in appetite, excessive drinking and eye or teeth problems also need to be dealt with by your vet. 

If your dog is older, why not book a senior health check to discuss their changing needs with your veterinary team?

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Life stages

Small - up to 9kg 

  • 1 year = 7 human years 

Medium - 9 to 23 kg

  • 1 year = 7 human years

Large - 23 to 40 kg

  • 1 year = 8 human years

Very Large - over 40 kg

  • 1 year = 9 human years
  • 2 years = 18 human years 

Small - up to 9kg 

  • 2 years = 13 human years
  • 3 years = 20 human years
  • 4 years = 26 human years
  • 5 years = 36 human years
  • 6 years = 40 human years
  • 7 years = 44 human years
  • 8 years = 48 human years

Medium - 9 to 23 kg

  • 2 years = 14 human years 
  • 3 years = 21 human years
  • 4 years = 27 human years
  • 5 years = 38 human years
  • 6 years = 42 human years
  • 7 years = 47 human years

Large - 23 to 40 kg

  • 2 years = 16 human years
  • 3 years = 24 human years
  • 4 years = 31 human years
  • 5 years = 40 human years
  • 6 years = 45 human years

Very Large - over 40 kg

  • 3 years = 26 human years
  • 4 years = 34 human years

Small - up to 9kg 

  • 9 years = 52 human years
  • 10 years = 56 human years
  • 11 years = 60 human years
  • 12 years = 64 human years
  • 13 years = 68 human years

Medium - 9 to 23 kg

  • 8 years = 51 human years
  • 9 years = 56 human years
  • 10 years = 60 human years
  • 11 years = 56 human years
  • 12 years = 69 human years

Large - 23 to 40 kg

  • 7 years = 50 human years
  • 8 years = 55 human years
  • 9 years = 61 human years
  • 10 years = 66 human years

Very Large - over 40 kg

  • 5 years = 42 human years
  • 6 years = 49 human years
  • 7 years = 56 human years 
  • 8 years = 64 human years

Small - up to 9kg 

  • 14 years = 72 human years
  • 15 years = 76 human years
  • 16 years = 80 human years
  • 17 years = 88 human years
  • 18 years = 88 human years
  • 19 years = 92 human years
  • 20 years = 96 human years

Medium - 9 to 23 kg

  • 13 years = 74 human years
  • 14 years = 78 human years
  • 15 years = 83 human years
  • 16 years = 87 human years
  • 17 years = 92 human years
  • 18 years = 96 human years
  • 19 years = 101 human years

Large - 23 to 40 kg

  • 11 years = 72 human years
  • 12 years = 77 human years
  • 13 years = 82 human years
  • 14 years = 88 human years
  • 15 years = 93 human years
  • 16 years = 99 human years
  • 17 years = 104 human years

Very Large - over 40 kg

  • 9 years = 71 human years
  • 10 years = 78 human years
  • 11 years = 86 human years
  • 12 years = 93 human years
  • 13 years = 101 human years

Health Plans to keep your dog healthy

At Vets4Pets we offer a range of Health Plans that make essential routine treatments more affordable. You'll save money on things like annual vaccinations, flea and worm treatment and routine health check-ups.

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Recognising your dog has dementia

Older dogs can suffer from dementia, also known as canine cognitive dysfunction syndrome. It’s thought to affect nearly a third of 11 to 12-year-old dogs and over two-thirds of dogs aged 15 to 16 years. So, how do you tell the difference between dog dementia and old age, and what can you do about it?

close up of senior dog

Dog Advice

Read more of our expert dog advice to keep your dog happy and healthy.