TABLE 2.

Accuracy of body weight equation¹

	US system				Metric system
BMI	Height, in	Weight, lb	Predicted weight, lb	Absolute error, lb	Height, m	Weight, kg	Predicted weight, kg	Absolute error, kg
20 kg/m2
	60	102	100	−2	1.50	45.0	44.0	−1.0
	61	106	104	−2	1.53	46.8	46.1	−0.7
	62	109	108	−1	1.56	48.7	48.2	−0.5
	63	113	112	−1	1.59	50.6	50.3	−0.3
	64	117	116	−1	1.62	52.5	52.4	−0.1
	65	120	120	0	1.65	54.5	54.5	0.0
	66	124	124	0	1.68	56.4	56.6	0.2
	67	128	128	0	1.71	58.5	58.7	0.2
	68	132	132	0	1.74	60.6	60.8	0.2
	69	135	136	1	177	62.7	62.9	0.2
	70	139	140	1	1.80	64.8	65.0	0.2
	71	143	144	1	1.83	67.0	67.1	0.1
	72	147	148	1	1.86	69.2	69.2	0.0
	73	152	152	0	1.89	71.4	71.3	−0.1
	74	156	156	0	1.92	73.7	73.4	−0.3
	75	160	160	0	—	—	—	—
35 kg/m2
	60	179	175	−4	1.50	78.8	77.0	−1.8
	61	185	182	−3	1.53	81.9	80.7	−1.3
	62	191	189	−2	1.56	85.2	84.4	−0.8
	63	198	196	−2	1.59	88.5	88.0	−0.5
	64	204	203	−1	1.62	91.9	91.7	−0.2
	65	210	210	0	1.65	95.3	95.4	0.1
	66	217	217	0	1.68	98.8	99.1	0.3
	67	224	224	0	1.71	102.3	102.7	0.4
	68	230	231	1	1.74	106.0	106.4	0.4
	69	237	238	1	177	109.7	110.1	0.4
	70	244	245	1	1.80	113.4	113.8	0.3
	71	251	252	1	1.83	117.2	117.4	0.2
	72	258	259	1	1.86	121.1	121.1	0.0
	73	265	266	1	1.89	125.0	124.8	−0.2
	74	273	273	0	1.92	129.0	128.5	−0.6
	75	280	280	0	—	—	—	—

¹Body weights that were predicted by our equation were nearly identical to actual body weights at different heights for BMIs of 20 and 35 kg/m².