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Calculator: CDC weight for age percentiles for males (2 to 20 years)


Calculator: CDC weight for age percentiles for males (2 to 20 years)

 
Input
 
Age  
Weight  

 
Results
 
Important: Inputs must be complete to perform calculation.

 
 
Z-score  
Percentile  
 
Decimal precision  

 
 

 
Notes
  • Weight percentiles are best interpreted with reference to height (see calculators for Body Mass Index).
  • This calculator uses the growth reference from the Centers for Disease Control and National Center for Health Statistics (CDC/NCHS). The results will be slightly different from calculators or charts that use the growth standards from the World Health Organization (WHO) or International Obesity Task Force (IOTF).
  • At the extremes (>97th percentile or <3rd percentile), small differences in percentiles represent clinically important differences. At these extremes, the Z-score is a more precise reflection of how far the measurement deviates from the mean and is a useful tool for tracking changes.
  • The accuracy of the calculation can be assessed by viewing the graph of weight-for-age percentiles for this sex and age group in UpToDate.
  • For all LMS tables, the row in the table corresponding to the patient-specific value is found in the first column of the table; values to be used for L (the Box-Cox power), M (the median), and S (the generalized coefficient of variation) in the equation for Z-score are retrieved.
  • Z-scores may be used to do a table lookup for the corresponding percentile in the Normal table percentiles for Z-score table (below). Numbers along the left side (Y-axis) of the table represent the first number and first decimal place of the Z-score, while the numbers along the top (X-axis) of the table represent the second decimal position of the Z-score.

 
Equations used
 
Age_Months = Age *12
Z-score = ((Weight/M)L - 1) / (L * S)
Percentile = ZtoPercentile(Z-score)

 

 

LMS table: Weight-for-age percentiles, boys, 2 to 20 years, CDC growth charts: United States

 
Age [months] Power [L] Median [M] Variation [S]
24.5 -0.216501213 12.74154396 0.108166006
25.5 -0.239790488 12.88102276 0.108274706
26.5 -0.266315853 13.01842382 0.108421025
27.5 -0.295754969 13.1544966 0.10860477
28.5 -0.327729368 13.28989667 0.108825681
29.5 -0.361817468 13.42519408 0.109083424
30.5 -0.397568087 13.56088113 0.109377581
31.5 -0.434520252 13.69737858 0.109707646
32.5 -0.472188756 13.83504622 0.110073084
33.5 -0.510116627 13.97418299 0.110473254
34.5 -0.547885579 14.1150324 0.1109074
35.5 -0.58507011 14.25779618 0.111374787
36.5 -0.621319726 14.40262749 0.111874514
37.5 -0.656295986 14.54964614 0.112405687
38.5 -0.689735029 14.69893326 0.112967254
39.5 -0.721410388 14.85054151 0.11355811
40.5 -0.751175223 15.00449143 0.114176956
41.5 -0.778904279 15.16078454 0.114822482
42.5 -0.804515498 15.31940246 0.115493292
43.5 -0.828003255 15.48030313 0.116187777
44.5 -0.849380372 15.64343309 0.116904306
45.5 -0.86869965 15.80872535 0.117641148
46.5 -0.886033992 15.97610456 0.118396541
47.5 -0.901507878 16.14548194 0.119168555
48.5 -0.915241589 16.31676727 0.11995532
49.5 -0.927377772 16.4898646 0.120754916
50.5 -0.938069819 16.66467529 0.121565421
51.5 -0.94747794 16.84109948 0.122384927
52.5 -0.955765694 17.01903746 0.123211562
53.5 -0.963096972 17.1983908 0.124043503
54.5 -0.969633434 17.37906341 0.124878992
55.5 -0.975532355 17.56096245 0.125716348
56.5 -0.980937915 17.74400082 0.126554022
57.5 -0.986006518 17.92809121 0.127390453
58.5 -0.99086694 18.11315625 0.128224294
59.5 -0.995644402 18.29912286 0.129054277
60.5 -1.000453886 18.48592413 0.129879257
61.5 -1.005399668 18.67349965 0.130698212
62.5 -1.010575003 18.86179576 0.131510245
63.5 -1.016061941 19.05076579 0.132314586
64.5 -1.021931241 19.24037019 0.133110593
65.5 -1.028242376 19.43057662 0.133897752
66.5 -1.035043608 19.62136007 0.134675673
67.5 -1.042372125 19.8127028 0.13544409
68.5 -1.050254232 20.0045944 0.13620286
69.5 -1.058705595 20.19703171 0.136951959
70.5 -1.067731529 20.39001872 0.137691478
71.5 -1.077321193 20.58356862 0.138421673
72.5 -1.087471249 20.77769565 0.139142773
73.5 -1.098152984 20.97242631 0.139855242
74.5 -1.10933408 21.16779192 0.140559605
75.5 -1.120974043 21.36383013 0.141256489
76.5 -1.133024799 21.56058467 0.141946613
77.5 -1.145431351 21.75810506 0.142630785
78.5 -1.158132499 21.95644627 0.143309898
79.5 -1.171061612 22.15566842 0.143984924
80.5 -1.184141975 22.35583862 0.144656953
81.5 -1.197307185 22.55702268 0.145327009
82.5 -1.210475099 22.75929558 0.145996289
83.5 -1.223565263 22.9627344 0.146666
84.5 -1.236497304 23.16741888 0.147337375
85.5 -1.249186293 23.37343341 0.148011715
86.5 -1.261555446 23.58086145 0.148690256
87.5 -1.273523619 23.78979096 0.149374297
88.5 -1.285013783 24.00031064 0.150065107
89.5 -1.295952066 24.21251028 0.150763933
90.5 -1.306268473 24.42648043 0.151471982
91.5 -1.31589753 24.642312 0.152190413
92.5 -1.324778843 24.86009596 0.152920322
93.5 -1.332857581 25.07992303 0.153662731
94.5 -1.340080195 25.30188584 0.154418635
95.5 -1.346412105 25.52606977 0.155188768
96.5 -1.351813296 25.75256528 0.155973912
97.5 -1.356253969 25.9814599 0.156774684
98.5 -1.359710858 26.2128399 0.157591579
99.5 -1.362167159 26.44679027 0.158424964
100.5 -1.363612378 26.68339457 0.159275071
101.5 -1.364042106 26.92273494 0.160141995
102.5 -1.363457829 27.16489199 0.161025689
103.5 -1.361865669 27.40994539 0.161925976
104.5 -1.35928261 27.65796978 0.162842452
105.5 -1.355720571 27.90904433 0.163774719
106.5 -1.351202536 28.16324264 0.164722138
107.5 -1.345754408 28.42063744 0.165683945
108.5 -1.339405453 28.68130005 0.166659247
109.5 -1.332188093 28.94530029 0.167647017
110.5 -1.324137479 29.21270645 0.168646104
111.5 -1.315291073 29.48358527 0.169655235
112.5 -1.30568824 29.75800198 0.170673022
113.5 -1.295369867 30.03602021 0.17169797
114.5 -1.284374967 30.31770417 0.17272854
115.5 -1.272750864 30.60311107 0.173762961
116.5 -1.260539193 30.89230072 0.174799493
117.5 -1.247783611 31.18532984 0.175836284
118.5 -1.234527763 31.48225315 0.176871417
119.5 -1.220815047 31.78312329 0.177902912
120.5 -1.206688407 32.08799062 0.17892874
121.5 -1.19219015 32.39690313 0.17994683
122.5 -1.177361786 32.7099062 0.180955078
123.5 -1.162243894 33.02704244 0.181951361
124.5 -1.146876007 33.34835148 0.182933537
125.5 -1.131296524 33.67386973 0.183899465
126.5 -1.115542634 34.00363017 0.184847006
127.5 -1.099650267 34.33766207 0.185774041
128.5 -1.083654055 34.67599076 0.18667847
129.5 -1.067587314 35.01863732 0.187558229
130.5 -1.051482972 35.36561737 0.18841128
131.5 -1.035367321 35.71694723 0.189235738
132.5 -1.019277299 36.07262569 0.190029545
133.5 -1.003235326 36.43265996 0.190790973
134.5 -0.987269866 36.79704392 0.191518224
135.5 -0.971406609 37.1657671 0.192209619
136.5 -0.955670107 37.53881268 0.192863569
137.5 -0.940083834 37.91615721 0.193478582
138.5 -0.924670244 38.2977703 0.194053274
139.5 -0.909450843 38.6836143 0.194586368
140.5 -0.894446258 39.07364401 0.195076705
141.5 -0.879676305 39.46780643 0.195523246
142.5 -0.865160071 39.86604044 0.195925079
143.5 -0.850915987 40.26827652 0.196281418
144.5 -0.836961905 40.67443658 0.196591612
145.5 -0.823315176 41.08443363 0.19685514
146.5 -0.809992726 41.49817164 0.19707162
147.5 -0.797011132 41.91554528 0.197240806
148.5 -0.784386693 42.33643978 0.197362591
149.5 -0.772135506 42.76073078 0.197437004
150.5 -0.760273528 43.18828419 0.19746421
151.5 -0.748815968 43.61895703 0.197444522
152.5 -0.737780398 44.0525931 0.197378345
153.5 -0.727181568 44.48903027 0.197266263
154.5 -0.717035494 44.92809483 0.197108968
155.5 -0.707358338 45.36960315 0.196907274
156.5 -0.698166437 45.81336172 0.196662115
157.5 -0.689476327 46.25916729 0.196374538
158.5 -0.68130475 46.70680701 0.196045701
159.5 -0.673668658 47.15605863 0.195676862
160.5 -0.666585194 47.60669074 0.19526938
161.5 -0.660069969 48.05846572 0.19482473
162.5 -0.654142602 48.51113138 0.19434441
163.5 -0.648819666 48.96443224 0.193830046
164.5 -0.644118611 49.41810374 0.193283319
165.5 -0.640056805 49.87187409 0.192705974
166.5 -0.636651424 50.32546478 0.192099812
167.5 -0.633919328 50.77859121 0.191466681
168.5 -0.631876912 51.23096332 0.190808471
169.5 -0.63053994 51.68228625 0.190127105
170.5 -0.629923353 52.13226113 0.18942453
171.5 -0.630041066 52.58058583 0.188702714
172.5 -0.630905733 53.02695588 0.187963636
173.5 -0.632528509 53.47106525 0.187209281
174.5 -0.634918779 53.91260737 0.18644163
175.5 -0.638083884 54.35127608 0.185662657
176.5 -0.642028835 54.78676659 0.184874323
177.5 -0.646756013 55.21877657 0.184078567
178.5 -0.652262297 55.64701131 0.183277339
179.5 -0.658551638 56.07116407 0.182472427
180.5 -0.665609025 56.49095862 0.181665781
181.5 -0.673425951 56.90610886 0.18085918
182.5 -0.681987284 57.31634059 0.180054395
183.5 -0.691273614 57.72138846 0.179253153
184.5 -0.701261055 58.12099696 0.178457127
185.5 -0.711921092 58.51492143 0.177667942
186.5 -0.723218488 58.90293208 0.176887192
187.5 -0.735121189 59.28479948 0.176116307
188.5 -0.747580416 59.66032626 0.175356814
189.5 -0.760550666 60.02931704 0.174610071
190.5 -0.773984558 60.39158721 0.173877336
191.5 -0.787817728 60.74698785 0.173159953
192.5 -0.801993069 61.09536847 0.172459052
193.5 -0.816446409 61.43660077 0.171775726
194.5 -0.831110299 61.77057372 0.171110986
195.5 -0.845914498 62.09719399 0.170465756
196.5 -0.860786514 62.41638628 0.169840869
197.5 -0.875652181 62.72809362 0.169237063
198.5 -0.890436283 63.03227756 0.168654971
199.5 -0.905063185 63.32891841 0.168095124
200.5 -0.91945749 63.61801537 0.16755794
201.5 -0.933544683 63.89958662 0.167043722
202.5 -0.947251765 64.17366943 0.166552654
203.5 -0.960507855 64.44032016 0.166084798
204.5 -0.973244762 64.69961427 0.16564009
205.5 -0.985397502 64.95164625 0.165218341
206.5 -0.996904762 65.1965295 0.164819236
207.5 -1.007705555 65.43440186 0.16444238
208.5 -1.017756047 65.66540015 0.164087103
209.5 -1.027002713 65.88970117 0.163752791
210.5 -1.035402243 66.10749114 0.163438661
211.5 -1.042916356 66.31897311 0.163143825
212.5 -1.049511871 66.52436618 0.162867311
213.5 -1.055160732 66.72390443 0.162608072
214.5 -1.059840019 66.91783563 0.162365006
215.5 -1.063531973 67.10641956 0.162136973
216.5 -1.066224038 67.28992603 0.161922819
217.5 -1.067908908 67.46863255 0.161721398
218.5 -1.068589885 67.64281378 0.16153153
219.5 -1.068261146 67.8127675 0.161352313
220.5 -1.066933756 67.97877331 0.161182785
221.5 -1.064620976 68.14111022 0.161022184
222.5 -1.061341755 68.30004741 0.160869943
223.5 -1.057116957 68.4558454 0.160725793
224.5 -1.051988979 68.60872174 0.160589574
225.5 -1.04599033 68.75889263 0.1604617
226.5 -1.039168248 68.90653028 0.160342924
227.5 -1.031579574 69.05176427 0.160234478
228.5 -1.023291946 69.19467288 0.160138158
229.5 -1.014385118 69.33527376 0.160056393
230.5 -1.004952366 69.47351373 0.159992344
231.5 -0.995101924 69.60925782 0.159949989
232.5 -0.984958307 69.74227758 0.159934231
233.5 -0.974663325 69.87223885 0.159951004
234.5 -0.964376555 69.99868896 0.160007394
235.5 -0.954274945 70.12104381 0.160111769
236.5 -0.944551187 70.23857482 0.160273918
237.5 -0.935410427 70.35039626 0.160505203
238.5 -0.927059784 70.45546105 0.160818788
239.5 -0.919718461 70.55252127 0.161229617

 

LMS table: Normal table percentiles for Z-score

 
Z 0 1 2 3 4 5 6 7 8 9
-3.0 0.13% 0.13% 0.13% 0.12% 0.12% 0.11% 0.11% 0.11% 0.10% 0.10%
-2.9 0.19% 0.18% 0.18% 0.17% 0.16% 0.16% 0.15% 0.15% 0.14% 0.14%
-2.8 0.26% 0.25% 0.24% 0.23% 0.23% 0.22% 0.21% 0.21% 0.20% 0.19%
-2.7 0.35% 0.34% 0.33% 0.32% 0.31% 0.30% 0.29% 0.28% 0.27% 0.26%
-2.6 0.47% 0.45% 0.44% 0.43% 0.41% 0.40% 0.39% 0.38% 0.37% 0.36%
-2.5 0.62% 0.60% 0.59% 0.57% 0.55% 0.54% 0.52% 0.51% 0.49% 0.48%
-2.4 0.82% 0.80% 0.78% 0.75% 0.73% 0.71% 0.70% 0.68% 0.66% 0.64%
-2.3 1.07% 1.04% 1.02% 0.99% 0.96% 0.94% 0.91% 0.89% 0.87% 0.84%
-2.2 1.39% 1.36% 1.32% 1.29% 1.26% 1.22% 1.19% 1.16% 1.13% 1.10%
-2.1 1.79% 1.74% 1.70% 1.66% 1.62% 1.58% 1.54% 1.50% 1.46% 1.43%
-2.0 2.28% 2.22% 2.17% 2.12% 2.07% 2.02% 1.97% 1.92% 1.88% 1.83%
-1.9 2.87% 2.81% 2.74% 2.68% 2.62% 2.56% 2.50% 2.44% 2.39% 2.33%
-1.8 3.59% 3.52% 3.44% 3.36% 3.29% 3.22% 3.14% 3.07% 3.01% 2.94%
-1.7 4.46% 4.36% 4.27% 4.18% 4.09% 4.01% 3.92% 3.84% 3.75% 3.67%
-1.6 5.48% 5.37% 5.26% 5.16% 5.05% 4.95% 4.85% 4.75% 4.65% 4.55%
-1.5 6.68% 6.55% 6.43% 6.30% 6.18% 6.06% 5.94% 5.82% 5.71% 5.59%
-1.4 8.08% 7.93% 7.78% 7.64% 7.49% 7.35% 7.22% 7.08% 6.94% 6.81%
-1.3 9.68% 9.51% 9.34% 9.18% 9.01% 8.85% 8.69% 8.53% 8.38% 8.23%
-1.2 11.51% 11.31% 11.12% 10.94% 10.75% 10.57% 10.38% 10.20% 10.03% 9.85%
-1.1 13.57% 13.35% 13.14% 12.92% 12.71% 12.51% 12.30% 12.10% 11.90% 11.70%
-1.0 15.87% 15.63% 15.39% 15.15% 14.92% 14.69% 14.46% 14.23% 14.01% 13.79%
-0.9 18.41% 18.14% 17.88% 17.62% 17.36% 17.11% 16.85% 16.60% 16.35% 16.11%
-0.8 21.19% 20.90% 20.61% 20.33% 20.05% 19.77% 19.49% 19.22% 18.94% 18.67%
-0.7 24.20% 23.89% 23.58% 23.27% 22.97% 22.66% 22.36% 22.07% 21.77% 21.48%
-0.6 27.43% 27.09% 26.76% 26.44% 26.11% 25.79% 25.46% 25.14% 24.83% 24.51%
-0.5 30.85% 30.50% 30.15% 29.81% 29.46% 29.12% 28.77% 28.43% 28.10% 27.76%
-0.4 34.46% 34.09% 33.72% 33.36% 33.00% 32.64% 32.28% 31.92% 31.56% 31.21%
-0.3 38.21% 37.83% 37.45% 37.07% 36.69% 36.32% 35.94% 35.57% 35.20% 34.83%
-0.2 42.07% 41.68% 41.29% 40.91% 40.52% 40.13% 39.74% 39.36% 38.97% 38.59%
-0.1 46.02% 45.62% 45.22% 44.83% 44.43% 44.04% 43.64% 43.25% 42.86% 42.47%
0.0 50.00% 50.40% 50.80% 51.20% 51.60% 51.99% 52.39% 52.79% 53.19% 53.59%
0.1 53.98% 54.38% 54.78% 55.17% 55.57% 55.96% 56.36% 56.75% 57.14% 57.54%
0.2 57.93% 58.32% 58.71% 59.10% 59.48% 59.87% 60.26% 60.64% 61.03% 61.41%
0.3 61.79% 62.17% 62.55% 62.93% 63.31% 63.68% 64.06% 64.43% 64.80% 65.17%
0.4 65.54% 65.91% 66.28% 66.64% 67.00% 67.36% 67.72% 68.08% 68.44% 68.79%
0.5 69.15% 69.50% 69.85% 70.19% 70.54% 70.88% 71.23% 71.57% 71.90% 72.24%
0.6 72.58% 72.91% 73.24% 73.57% 73.89% 74.22% 74.54% 74.86% 75.18% 75.49%
0.7 75.80% 76.12% 76.42% 76.73% 77.04% 77.34% 77.64% 77.94% 78.23% 78.52%
0.8 78.81% 79.10% 79.39% 79.67% 79.96% 80.23% 80.51% 80.79% 81.06% 81.33%
0.9 81.59% 81.86% 82.12% 82.38% 82.64% 82.89% 83.15% 83.40% 83.65% 83.89%
1.0 84.13% 84.38% 84.61% 84.85% 85.08% 85.31% 85.54% 85.77% 85.99% 86.21%
1.1 86.43% 86.65% 86.86% 87.08% 87.29% 87.49% 87.70% 87.90% 88.10% 88.30%
1.2 88.49% 88.69% 88.88% 89.07% 89.25% 89.44% 89.62% 89.80% 89.97% 90.15%
1.3 90.32% 90.49% 90.66% 90.82% 90.99% 91.15% 91.31% 91.47% 91.62% 91.77%
1.4 91.92% 92.07% 92.22% 92.36% 92.51% 92.65% 92.79% 92.92% 93.06% 93.19%
1.5 93.32% 93.45% 93.57% 93.70% 93.82% 93.94% 94.06% 94.18% 94.30% 94.41%
1.6 94.52% 94.63% 94.74% 94.85% 94.95% 95.05% 95.15% 95.25% 95.35% 95.45%
1.7 95.54% 95.64% 95.73% 95.82% 95.91% 95.99% 96.08% 96.16% 96.25% 96.33%
1.8 96.41% 96.49% 96.56% 96.64% 96.71% 96.78% 96.86% 96.93% 97.00% 97.06%
1.9 97.13% 97.19% 97.26% 97.32% 97.38% 97.44% 97.50% 97.56% 97.62% 97.67%
2.0 97.73% 97.78% 97.83% 97.88% 97.93% 97.98% 98.03% 98.08% 98.12% 98.17%
2.1 98.21% 98.26% 98.30% 98.34% 98.38% 98.42% 98.46% 98.50% 98.54% 98.57%
2.2 98.61% 98.65% 98.68% 98.71% 98.75% 98.78% 98.81% 98.84% 98.87% 98.90%
2.3 98.93% 98.96% 98.98% 99.01% 99.04% 99.06% 99.09% 99.11% 99.13% 99.16%
2.4 99.18% 99.20% 99.22% 99.25% 99.27% 99.29% 99.31% 99.32% 99.34% 99.36%
2.5 99.38% 99.40% 99.41% 99.43% 99.45% 99.46% 99.48% 99.49% 99.51% 99.52%
2.6 99.53% 99.55% 99.56% 99.57% 99.59% 99.60% 99.61% 99.62% 99.63% 99.64%
2.7 99.65% 99.66% 99.67% 99.68% 99.69% 99.70% 99.71% 99.72% 99.73% 99.74%
2.8 99.74% 99.75% 99.76% 99.77% 99.77% 99.78% 99.79% 99.80% 99.80% 99.81%
2.9 99.81% 99.82% 99.83% 99.83% 99.84% 99.84% 99.85% 99.85% 99.86% 99.86%
3.0 99.87% 99.87% 99.87% 99.88% 99.88% 99.89% 99.89% 99.89% 99.90% 99.90%
Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

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Topic 89888 Version 9.0