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National Center for Health Statistics

Data Table for Boys Length-for-age and Weight-for-age Charts

Boys Length-for-age Percentiles, Birth to 24 Months
Month L M S 2nd (2.3rd) 5th 10th 25th 50th 75th 90th 95th 98th (97.7th)
0 1 49.8842 0.03795 46.09799 46.77032 47.45809 48.60732 49.8842 51.16108 52.31031 52.99808 53.67041
1 1 54.7244 0.03557 50.83131 51.52262 52.2298 53.41147 54.7244 56.03733 57.219 57.92618 58.61749
2 1 58.4249 0.03424 54.42396 55.13442 55.8612 57.0756 58.4249 59.7742 60.9886 61.71538 62.42584
3 1 61.4292 0.03328 57.34047 58.06652 58.80924 60.0503 61.4292 62.8081 64.04916 64.79188 65.51793
4 1 63.886 0.03257 59.72447 60.46344 61.21939 62.48254 63.886 65.28946 66.55261 67.30856 68.04753
5 1 65.9026 0.03204 61.67956 62.42946 63.19658 64.4784 65.9026 67.3268 68.60862 69.37574 70.12564
6 1 67.6236 0.03165 63.34303 64.10314 64.88071 66.18 67.6236 69.0672 70.36649 71.14406 71.90417
7 1 69.1645 0.03139 64.82235 65.5934 66.38216 67.70013 69.1645 70.62887 71.94684 72.7356 73.50665
8 1 70.5994 0.03124 66.18835 66.97163 67.77291 69.1118 70.5994 72.087 73.42589 74.22717 75.01045
9 1 71.9687 0.03117 67.48217 68.27886 69.09384 70.45564 71.9687 73.48176 74.84356 75.65854 76.45523
10 1 73.2812 0.03118 68.71138 69.52286 70.35297 71.74005 73.2812 74.82235 76.20943 77.03954 77.85102
11 1 74.5388 0.03125 69.88013 70.70738 71.55363 72.96769 74.5388 76.10991 77.52397 78.37022 79.19748
12 1 75.7488 0.03137 70.99632 71.84023 72.70353 74.14605 75.7488 77.35155 78.79407 79.65737 80.50128
13 1 76.9186 0.03154 72.06657 72.92816 73.80954 75.28228 76.9186 78.55492 80.02766 80.90904 81.77063
14 1 78.0497 0.03174 73.09511 73.97491 74.87492 76.37879 78.0497 79.72061 81.22448 82.12449 83.0043
15 1 79.1458 0.03197 74.08522 74.98384 75.9031 77.43914 79.1458 80.85246 82.3885 83.30776 84.20638
16 1 80.2113 0.03222 75.04248 75.96033 76.89925 78.46814 80.2113 81.95446 83.52335 84.46227 85.38012
17 1 81.2487 0.0325 75.96753 76.90533 77.86466 79.46765 81.2487 83.02975 84.63274 85.59207 86.52987
18 1 82.2587 0.03279 76.86417 77.8221 78.80202 80.43942 82.2587 84.07798 85.71538 86.6953 87.65323
19 1 83.2418 0.0331 77.73119 78.70973 79.71074 81.38338 83.2418 85.10022 86.77286 87.77387 88.75241
20 1 84.1996 0.03342 78.5717 79.57106 80.59338 82.30162 84.1996 86.09758 87.80582 88.82814 89.8275
21 1 85.1348 0.03376 79.3865 80.40724 81.45143 83.19621 85.1348 87.07339 88.81817 89.86236 90.8831
22 1 86.0477 0.0341 80.17925 81.22133 82.28734 84.06859 86.0477 88.02681 89.80806 90.87407 91.91615
23 1 86.941 0.03445 80.95077 82.01447 83.1026 84.92082 86.941 88.96118 90.7794 91.86753 92.93123
24 1 87.8161 0.03479 81.70586 82.79087 83.9008 85.75545 87.8161 89.87675 91.7314 92.84133 93.92634

 

Boys Weight-for-age Percentiles, Birth to 24 Months
Month L M S 2nd (2.3rd) 5th 10th 25th 50th 75th 90th 95th 98th (97.7th)
0 0.3487 3.3464 0.14602 2.459312 2.603994 2.757621 3.027282 3.3464 3.686659 4.011499 4.214527 4.419354
1 0.2297 4.4709 0.13395 3.39089 3.566165 3.752603 4.080792 4.4709 4.889123 5.290726 5.542933 5.798331
2 0.197 5.5675 0.12385 4.31889 4.522344 4.738362 5.117754 5.5675 6.048448 6.509323 6.798348 7.090758
3 0.1738 6.3762 0.11727 5.018434 5.240269 5.475519 5.888058 6.3762 6.897306 7.395936 7.708329 8.024169
4 0.1553 7.0023 0.11316 5.561377 5.797135 6.046988 6.484777 7.0023 7.554286 8.082087 8.412602 8.746662
5 0.1395 7.5105 0.1108 5.996672 6.244465 6.507016 6.966941 7.5105 8.090161 8.644384 8.991445 9.342238
6 0.1257 7.934 0.10958 6.352967 6.611702 6.885864 7.366195 7.934 8.539707 9.119041 9.481939 9.848832
7 0.1134 8.297 0.10902 6.653301 6.922131 7.207057 7.706413 8.297 8.927371 9.530656 9.908738 10.29113
8 0.1021 8.6151 0.10882 6.913126 7.19127 7.486158 8.003205 8.6151 9.268678 9.894622 10.28713 10.68428
9 0.0917 8.9014 0.10881 7.144822 7.431644 7.735837 8.26946 8.9014 9.5769 10.22433 10.63055 11.04177
10 0.082 9.1649 0.10891 7.356558 7.651572 7.964565 8.5139 9.1649 9.861313 10.5293 10.94868 11.37341
11 0.073 9.4122 0.10906 7.55441 7.857229 8.178615 8.742959 9.4122 10.12867 10.81641 11.24845 11.6862
12 0.0644 9.6479 0.10925 7.742219 8.052577 8.382077 8.960956 9.6479 10.38387 11.09087 11.53526 11.98574
13 0.0563 9.8749 0.10949 7.922091 8.239848 8.577324 9.170505 9.8749 10.63014 11.35618 11.81281 12.27589
14 0.0487 10.0953 0.10976 8.095984 8.421033 8.76637 9.373665 10.0953 10.86959 11.61449 12.08325 12.55884
15 0.0413 10.3108 0.11007 8.265127 8.597424 8.950586 9.571948 10.3108 11.10416 11.86797 12.34891 12.83707
16 0.0343 10.5228 0.11041 8.430734 8.770274 9.13126 9.7667 10.5228 11.33528 12.11808 12.61125 13.11206
17 0.0275 10.7319 0.11079 8.593128 8.939942 9.308795 9.958406 10.7319 11.5637 12.36571 12.87128 13.38491
18 0.0211 10.9385 0.11119 8.752902 9.107002 9.483736 10.14755 10.9385 11.7897 12.61101 13.12906 13.65558
19 0.0148 11.143 0.11164 8.909889 9.27136 9.656076 10.33431 11.143 12.01396 12.855 13.38579 13.92552
20 0.0087 11.3462 0.11211 9.065209 9.434095 9.826848 10.51961 11.3462 12.23713 13.09811 13.64181 14.19492
21 0.0029 11.5486 0.11261 9.219037 9.595435 9.996335 10.70383 11.5486 12.45983 13.3411 13.89795 14.46469
22 -0.0028 11.7504 0.11314 9.371554 9.755556 10.16471 10.88716 11.7504 12.6823 13.58426 14.15453 14.7352
23 -0.0083 11.9514 0.11369 9.522741 9.914417 10.33191 11.06946 11.9514 12.90424 13.82718 14.41108 15.0059
24 -0.0137 12.1515 0.11426 9.672527 10.07194 10.49784 11.25065 12.1515 13.12555 14.06979 14.66753 15.27674

 

 

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