BIRTH	2 1/2 OZ	2 3/4 OZ	3 OZ	3 1/2 OZ	4 OZ	4 1/4 OZ	4 1/2  OZ	5 1/2 OZ	5 1/2 OZ	6 OZ
1 WK	3 3/4	4	5	5 1/2	6 1/2	7	8	9	9 1/2	10 1/2
2 WKS	5	5 1/2	6 1/2	7	9	10	11	12 1/2	13 1/2	14 1/2
3 WKS	6	7	8	9	11	13	14	16	17 1/2	18 1/2
4 WKS	7	8	9 1/2	11	13	15	17	19	21	23
5 WKS	8	9	11	13	15	17	19 1/2	22	24	26
6 WKS	9	11	12 1/2	15	17 1/2	20	22	24	27	30
7 WKS	10	12	14 1/2	17	19 1/2	22	24 1/2	27	30	33
8 WKS	11	13	16	19	21 1/2	24	27	29	33	36
9 WKS	12	15	17 1/2	20	23	26	29	32	35	39
10WKS	13	16	19	22	25	28	31	34	38	41
11WKS	14	17	21	24	27	31	34	37	40	45
12WKS	15	19	22	26	30	33	37	41	45	49
13WKS	16	20	24	28	32	36	40	44	49	53
14WKS	17	22	26	30	34	39	43	47	52	56
15WKS	19	23	28	32	37	41	46	51	56	61
16WKS	20	25	30	34	39	44	49	54	59	65
17WKS	21	26	31	36	41	46	51	57	62	67
18WKS	22	28	33	37	43	48	54	60	65	71
19WKS	23	29	34	39	44	50	56	62	67	72
20WKS	24	30	35	41	46	52	58	64	70	76
21WKS	24	31	36	42	48	54	60	66	72	78
22WKS	25	32	37	43	49	56	62	68	74	80
23WKS	26	33	38	44	50	57	64	70	76	82
24WKS	26	33	39	45	51	58	65	71	78	84
25WKS	27	34	40	46	52	59	66	72	79	86
26WKS	27	34	40	47	53	60	67	73	80	87
18MTHS	2 lbs	2 1/2 lbs	3 lbs	3 1/2 lbs	4 lbs	4 1/2 lbs	5 lbs	5 1/2 lbs	6 lbs	6 1/2 lbs

How to read:  Puppy's age is listed on left side.  Folllow the line across to the puppy's corresponding weight in ounces.  Remember,
1 lb is 16 oz.  Once found, drop down to the bottom of the column to find the puppy's approximate weight at 1 1/2 years of age.

**Disclaimer**  This chart in no way guarantees  a puppy's size at maturity.  There are no guarantees, but this chart does do a good job of estimating.