Dog Years Chart: Dog to Human Years

Compare the classic 7× rule with size-aware estimates. Then try the Lap Day calculator.

Dog age	✖️7 rule	🐕‍🦺 Small	🐕 Medium	🦮 Large
1	7	15	15	15
2	14	24	24	24
3	21	28	29	30
4	28	32	34	36
5	35	36	39	42
6	42	40	44	48
7	49	44	49	54
8	56	48	54	60
9	63	52	59	66
10	70	56	64	72
11	77	60	69	78
12	84	64	74	84
13	91	68	79	90
14	98	72	84	96
15	105	76	89	102
16	112	80	94	108

ℹ️ Same simplified estimates the calculator uses: 15 for year one, +9 for year two, then +4/+5/+6 a year. Real aging varies by breed, genetics and health. Ask your vet about your dog.

Why size matters

Small and large dogs mature at a similar pace early on.

Later, larger breeds tend to age faster. That's why the columns spread apart after year two.

Senior yellow Labrador with a grey muzzle resting on a porch

Dog age	✖️7 rule	🐕‍🦺 Small	🐕 Medium	🦮 Large
1	7	15	15	15
2	14	24	24	24
3	21	28	29	30
4	28	32	34	36
5	35	36	39	42
6	42	40	44	48
7	49	44	49	54
8	56	48	54	60
9	63	52	59	66
10	70	56	64	72
11	77	60	69	78
12	84	64	74	84
13	91	68	79	90
14	98	72	84	96
15	105	76	89	102
16	112	80	94	108

Dog age	✖️7 rule	🐕‍🦺 Small	🐕 Medium	🦮 Large
1	7	15	15	15
2	14	24	24	24
3	21	28	29	30
4	28	32	34	36
5	35	36	39	42
6	42	40	44	48
7	49	44	49	54
8	56	48	54	60
9	63	52	59	66
10	70	56	64	72
11	77	60	69	78
12	84	64	74	84
13	91	68	79	90
14	98	72	84	96
15	105	76	89	102
16	112	80	94	108

Dog age	✖️7 rule	🐕‍🦺 Small	🐕 Medium	🦮 Large
1	7	15	15	15
2	14	24	24	24
3	21	28	29	30
4	28	32	34	36
5	35	36	39	42
6	42	40	44	48
7	49	44	49	54
8	56	48	54	60
9	63	52	59	66
10	70	56	64	72
11	77	60	69	78
12	84	64	74	84
13	91	68	79	90
14	98	72	84	96
15	105	76	89	102
16	112	80	94	108