Height and weight measurements for boys and girls

Girls	Height by percentiles			Weight by percentiles
		5		50		95		5		50		95
Age*	cm	Inches	cm	Inches	cm	Inches	kg	lb	kg	lb	kg	lb

Girls 
Birth	45.4	17¾	49.9	19¾	52.9	20¾	2.36	5¼	3.23	7	3.81	8½
3 months	55.4	21¾	59.5	23½	63.4	25	4.18	9¼	5.4	12	6.74	14¾
6 months	61.8	24¼	65.9	26	70.2	27¾	5.79	12¾	7.21	16 	8.73	19¼
9 months	66.1	26	70.4	27¾	75.0	29½ 	7.0	15½ 	8.56	18¾ 	10.17	22½
1	69.8	27½	74.3	29¼	79.1	31¼	7.84	17¼	9.53	21 	11.24	24¾ 
1½	76.0	30	80.9	31¾	86.1	34	8.92	19 	10.82	23¾ 	12.76	28¼
2†	81.6	32¼	86.8	34¼	93.6	36¾ 	9.95	22 	11.8	26 	14.15	31¼
2½†	84.6	33¼	90.0 	35½	96.6	38 	10.8	23¾	13.03	28¾	15.76	34¾ 
3	88.3	34¼	94.1	37	100.6 	39½	11.61  	25½ 	14.1	31 	17.2	38
3½	91.7	36	97.9	38½	104.5	41¼	12.37	27¼ 	15.07	33¼ 	18.54	41
4	95.0	37½	101.6	40	108.3	42 ¾	13.11	29	15.96	35¼	19.91	44
4½	98.1	38½	105.0	41¼	112.0	44	13.83	30½	16.81	37	21.24	46¾
5	101.1	39¾	108.4	42¾	115.6	45½	14.55	32	17.66	39 	22.62	49¾
6	106.7	42	114.6	45	122.7	48¼ 	16.05	35½ 	19.52	43 	25.75	56¾
7	111.8	44	120.6	47½	129.5	51	17.71	39	21.84	48¼ 	39.68	65½
8	116.9	46	126.4	49¾	136.2	53½ 	19.62	43¼	24.84	54¾	34.71	76½
9	122.1	48	132.2	52	142.9	56¼	21.82	48	28.46	62¾	40.64	89½ 
10	127.5	50¼	138.3	54½	149.5	58¾ 	24.36	53¾	32.55	71¾ 	47.17	104
11	132.5	52½	144.8	57	156.2	61½	27.24	60	36.95	81½	54.0	119 
12	139.8	55	151.5	59¾	162.7	64	30.52	67¼	41.53	91½	60.81	134
13	145.2	57¼	157.1	61¾	168.1	66¼	34.14	75¼	46.1	101¾	67.3	148¼
14	148.7	58	160.4	63¼	171.3	67½ 	37.76	83¼ 	50.28	110¾	73.08	161
15	150.5	59¼	161.8	63¾	172.8	68 	40.99	90¼	53.68	118¼	77.78	171½ 
16	151.6	59¾	162.4	64	173.3	68¼	43.41	95¾ 	55.89	123¼	80.99	178½
17	152.7	60	163.1	64¼	173.5	68¼	44.50	98¾ 	56.69	125 	82.46	181¾ 
18	153.6	60½	163.7	64½	173.6	68¼	45.26	99¾	56.62	124¾	82.47	181¾

Modified from National Center for Health Statistics (NCHS), Health Resources Administration, Department of Health, Education and Welfare, Hyattsville, MD. Conversion of metric data to approximate inches and pounds by Ross Laboratories, 1977.
*Years unless otherwise indicated

†Height data include some recumbent length measurements, which make values slightly higher than if all measurements had been of stature (standing height). From Wong DL: Whaley and Wong's essentials of pediatric nursing, St Louis, 1993, Mosby.