Reference tables

Dog age chart

Every conversion below uses the AKC/AVMA size-adjusted method. Pick a size to highlight it, or use the calculator for an exact age including months.

Highlight a size

Dog age to human age conversion for small, medium, large and giant dogs, ages 1 to 20 years, using the AKC and AVMA size-adjusted method.
Dog Age	Small	Medium	Large	Giant
1	15	15	15	15
2	24	24	24	24
3	28	28	28	28
4	32	32	32	32
5	36	36	36	36
6	40	42	45	49
7	44	47	50	56
8	48	51	55	64
9	52	56	61	71
10	56	60	66	79
11	60	65	72	86
12	64	69	77	93
13	68	74	82	100
14	72	78	88	107
15	76	83	93	114
16	80	87	99	121
17	84	91	105	128
18	88	95	111	135
19	92	99	117	142
20	96	103	123	149

Values come from the published AKC/AVMA chart. Years 1 to 5 are a shared developmental phase and are identical for every size (15, 24, 28, 32, 36); size-dependent rates only diverge from year 6 onward. Years 17 to 20 extrapolate at each size's closing rate.

Human age by breed

These figures use the breed-specific model, which scales each breed's average lifespan onto 68 human years. Breeds that live longer age more slowly per calendar year.

Small breedsUnder 20 lbs / Under 9 kg

Breed	Avg lifespan	Senior at	At 5 yr	At 10 yr	At 15 yr
Chihuahua	15 yr	11 yr	34.2	51.1	68
Yorkshire Terrier	14.5 yr	11 yr	34.6	52.2	69.8
Pomeranian	14 yr	10 yr	35	53.3	71.7
Toy Poodle	16 yr	12 yr	33.4	49.1	64.9
Shih Tzu	14 yr	10 yr	35	53.3	71.7
Maltese	14 yr	10 yr	35	53.3	71.7
Papillon	15 yr	11 yr	34.2	51.1	68
Cavalier King Charles Spaniel	13.5 yr	10 yr	35.5	54.6	73.7
Havanese	14.5 yr	11 yr	34.6	52.2	69.8
Pekingese	13 yr	10 yr	36	56	76
Italian Greyhound	14 yr	10 yr	35	53.3	71.7
Chinese Crested	15 yr	11 yr	34.2	51.1	68
Miniature Pinscher	14 yr	10 yr	35	53.3	71.7
Brussels Griffon	13.5 yr	10 yr	35.5	54.6	73.7
Bichon Frise	14.5 yr	11 yr	34.6	52.2	69.8
Miniature Schnauzer	13 yr	10 yr	36	56	76
Jack Russell Terrier	15 yr	11 yr	34.2	51.1	68
Dachshund (Miniature)	14 yr	10 yr	35	53.3	71.7
West Highland White Terrier	13 yr	10 yr	36	56	76
Lhasa Apso	14 yr	10 yr	35	53.3	71.7
Scottish Terrier	12 yr	9 yr	37.2	59.2	81.2
Cairn Terrier	14 yr	10 yr	35	53.3	71.7
Coton de Tulear	17 yr	13 yr	32.8	47.5	62.1
Norfolk Terrier	13.5 yr	10 yr	35.5	54.6	73.7
Pug	14 yr	10 yr	35	53.3	71.7
Boston Terrier	13 yr	10 yr	36	56	76
Miniature Poodle	14 yr	10 yr	35	53.3	71.7

Medium breeds20–50 lbs / 9–23 kg

Breed	Avg lifespan	Senior at	At 5 yr	At 10 yr	At 15 yr
French Bulldog	11 yr	8 yr	38.7	63.1	87.6
Beagle	13 yr	10 yr	36	56	76
Cocker Spaniel	13 yr	10 yr	36	56	76
Pembroke Welsh Corgi	13 yr	10 yr	36	56	76
Cardigan Welsh Corgi	13 yr	10 yr	36	56	76
Shetland Sheepdog	13 yr	10 yr	36	56	76
Dachshund (Standard)	13.5 yr	10 yr	35.5	54.6	73.7
Brittany	13 yr	10 yr	36	56	76
English Springer Spaniel	13 yr	10 yr	36	56	76
American Staffordshire Terrier	13 yr	10 yr	36	56	76
Whippet	13.5 yr	10 yr	35.5	54.6	73.7
Basset Hound	12 yr	9 yr	37.2	59.2	81.2
Australian Cattle Dog	14 yr	10 yr	35	53.3	71.7
Border Collie	13.5 yr	10 yr	35.5	54.6	73.7
English Bulldog	8.5 yr	6 yr	44.3	78.2	112
Staffordshire Bull Terrier	13 yr	10 yr	36	56	76
Miniature American Shepherd	13 yr	10 yr	36	56	76
Soft Coated Wheaten Terrier	13 yr	10 yr	36	56	76
Vizsla	13 yr	10 yr	36	56	76

Large breeds50–100 lbs / 23–45 kg

Breed	Avg lifespan	Senior at	At 5 yr	At 10 yr	At 15 yr
Bull Terrier	12.5 yr	9 yr	36.6	57.5	78.5
Labrador Retriever	12.5 yr	9 yr	36.6	57.5	78.5
Golden Retriever	11 yr	8 yr	38.7	63.1	87.6
German Shepherd	13 yr	10 yr	36	56	76
Standard Poodle	13 yr	10 yr	36	56	76
Rottweiler	9.5 yr	7 yr	41.6	70.9	100.3
Boxer	11 yr	8 yr	38.7	63.1	87.6
Siberian Husky	13 yr	10 yr	36	56	76
Doberman Pinscher	11 yr	8 yr	38.7	63.1	87.6
Australian Shepherd	13 yr	10 yr	36	56	76
German Shorthaired Pointer	11 yr	8 yr	38.7	63.1	87.6
Rhodesian Ridgeback	11 yr	8 yr	38.7	63.1	87.6
Belgian Malinois	15 yr	11 yr	34.2	51.1	68
Weimaraner	12 yr	9 yr	37.2	59.2	81.2
Collie	13 yr	10 yr	36	56	76
Dalmatian	12 yr	9 yr	37.2	59.2	81.2
Chesapeake Bay Retriever	11 yr	8 yr	38.7	63.1	87.6
Airedale Terrier	12 yr	9 yr	37.2	59.2	81.2
Old English Sheepdog	11 yr	8 yr	38.7	63.1	87.6
Cane Corso	10 yr	7 yr	40.5	68	95.5
Alaskan Malamute	11 yr	8 yr	38.7	63.1	87.6
Bloodhound	10 yr	7 yr	40.5	68	95.5
Akita	11 yr	8 yr	38.7	63.1	87.6
Flat-Coated Retriever	10 yr	7 yr	40.5	68	95.5
Irish Setter	13 yr	10 yr	36	56	76
English Setter	12 yr	9 yr	37.2	59.2	81.2
Samoyed	13 yr	10 yr	36	56	76
Chow Chow	11 yr	8 yr	38.7	63.1	87.6

Giant breedsOver 100 lbs / Over 45 kg

Breed	Avg lifespan	Senior at	At 5 yr	At 10 yr	At 15 yr
Great Dane	8.5 yr	6 yr	44.3	78.2	112
Saint Bernard	9 yr	7 yr	42.9	74.3	105.7
Bernese Mountain Dog	7 yr	5 yr	50.4	94.4	138.4
Irish Wolfhound	7 yr	5 yr	50.4	94.4	138.4
Newfoundland	9.5 yr	7 yr	41.6	70.9	100.3
Great Pyrenees	11 yr	8 yr	38.7	63.1	87.6
Mastiff (English)	8 yr	6 yr	46	82.7	119.3
Bullmastiff	8 yr	6 yr	46	82.7	119.3
Leonberger	7 yr	5 yr	50.4	94.4	138.4
Tibetan Mastiff	11 yr	8 yr	38.7	63.1	87.6
Dogue de Bordeaux	6.5 yr	5 yr	53.3	102.2	151.1
Scottish Deerhound	9.5 yr	7 yr	41.6	70.9	100.3
Neapolitan Mastiff	8 yr	6 yr	46	82.7	119.3
Anatolian Shepherd	12 yr	9 yr	37.2	59.2	81.2
Greater Swiss Mountain Dog	9 yr	7 yr	42.9	74.3	105.7
Boerboel	10 yr	7 yr	40.5	68	95.5
Black Russian Terrier	11 yr	8 yr	38.7	63.1	87.6

Dog Age	Small	Medium	Large	Giant
1	15	15	15	15
2	24	24	24	24
3	28	28	28	28
4	32	32	32	32
5	36	36	36	36
6	40	42	45	49
7	44	47	50	56
8	48	51	55	64
9	52	56	61	71
10	56	60	66	79
11	60	65	72	86
12	64	69	77	93
13	68	74	82	100
14	72	78	88	107
15	76	83	93	114
16	80	87	99	121
17	84	91	105	128
18	88	95	111	135
19	92	99	117	142
20	96	103	123	149

Dog Age	Small	Medium	Large	Giant
1	15	15	15	15
2	24	24	24	24
3	28	28	28	28
4	32	32	32	32
5	36	36	36	36
6	40	42	45	49
7	44	47	50	56
8	48	51	55	64
9	52	56	61	71
10	56	60	66	79
11	60	65	72	86
12	64	69	77	93
13	68	74	82	100
14	72	78	88	107
15	76	83	93	114
16	80	87	99	121
17	84	91	105	128
18	88	95	111	135
19	92	99	117	142
20	96	103	123	149

Dog age chart

Human age by breed

🐕 Small breedsUnder 20 lbs / Under 9 kg

🐕‍🦺 Medium breeds20–50 lbs / 9–23 kg

🦮 Large breeds50–100 lbs / 23–45 kg

🐩 Giant breedsOver 100 lbs / Over 45 kg

Small breedsUnder 20 lbs / Under 9 kg

Medium breeds20–50 lbs / 9–23 kg

Large breeds50–100 lbs / 23–45 kg

Giant breedsOver 100 lbs / Over 45 kg

Dog Age	Small	Medium	Large	Giant
1	15	15	15	15
2	24	24	24	24
3	28	28	28	28
4	32	32	32	32
5	36	36	36	36
6	40	42	45	49
7	44	47	50	56
8	48	51	55	64
9	52	56	61	71
10	56	60	66	79
11	60	65	72	86
12	64	69	77	93
13	68	74	82	100
14	72	78	88	107
15	76	83	93	114
16	80	87	99	121
17	84	91	105	128
18	88	95	111	135
19	92	99	117	142
20	96	103	123	149