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

Life stage: Puppy

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

Life stage: Adult

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

Life stage: Senior

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

Life stage: Geriatric

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