Referencia

Tabla de crecimiento del bebé: peso, talla y perímetro cefálico por mes

Los patrones de crecimiento de la OMS para niños y niñas, semana a semana y mes a mes, y una calculadora que te dice en qué percentil cae una medida.

Calculadora de percentiles

Sexo

Se calcula en esta página. Nada de lo que escribes se envía a ningún sitio.

Patrones de la OMS por edad

Peso para la edad — niños (kg)
Peso para la edad — niños (kg)
Edad−2 SD−1 SDMediana+1 SD+2 SD
Nacimiento2.52.93.33.94.4
1 sem2.63.03.54.04.6
2 sem2.83.23.84.34.9
3 sem3.13.54.14.75.3
4 sem3.33.84.45.05.7
5 sem3.54.14.75.36.0
6 sem3.84.34.95.66.3
7 sem4.04.65.25.96.6
8 sem4.24.85.46.16.9
9 sem4.45.05.66.47.2
10 sem4.55.25.86.67.4
11 sem4.75.36.06.87.6
12 sem4.95.56.27.07.8
3 m5.05.76.47.28.0
4 m5.66.27.07.88.7
5 m6.06.77.58.49.3
6 m6.47.17.98.89.8
7 m6.77.48.39.210.3
8 m6.97.78.69.610.7
9 m7.18.08.99.911.0
10 m7.48.29.210.211.4
11 m7.68.49.410.511.7
12 m7.78.69.610.812.0
13 m7.98.89.911.012.3
14 m8.19.010.111.312.6
15 m8.39.210.311.512.8
16 m8.49.410.511.713.1
17 m8.69.610.712.013.4
18 m8.89.810.912.213.7
19 m8.910.011.112.513.9
20 m9.110.111.312.714.2
21 m9.210.311.512.914.5
22 m9.410.511.813.214.7
23 m9.510.712.013.415.0
24 m9.710.812.213.615.3
Peso para la edad — niñas (kg)
Peso para la edad — niñas (kg)
Edad−2 SD−1 SDMediana+1 SD+2 SD
Nacimiento2.42.83.23.74.2
1 sem2.52.93.33.94.4
2 sem2.73.13.64.14.7
3 sem2.93.33.84.45.0
4 sem3.13.64.14.75.4
5 sem3.33.84.35.05.7
6 sem3.54.04.65.26.0
7 sem3.74.24.85.56.2
8 sem3.84.45.05.76.5
9 sem4.04.65.25.96.7
10 sem4.14.75.46.16.9
11 sem4.34.95.56.37.1
12 sem4.45.05.76.57.3
3 m4.55.25.86.67.5
4 m5.05.76.47.38.2
5 m5.46.16.97.88.8
6 m5.76.57.38.29.3
7 m6.06.87.68.69.8
8 m6.37.07.99.010.2
9 m6.57.38.29.310.5
10 m6.77.58.59.610.9
11 m6.97.78.79.911.2
12 m7.07.98.910.111.5
13 m7.28.19.210.411.8
14 m7.48.39.410.612.1
15 m7.68.59.610.912.4
16 m7.78.79.811.112.6
17 m7.98.910.011.412.9
18 m8.19.110.211.613.2
19 m8.29.210.411.813.5
20 m8.49.410.612.113.7
21 m8.69.610.912.314.0
22 m8.79.811.112.514.3
23 m8.910.011.312.814.6
24 m9.010.211.513.014.8
Longitud para la edad — niños (cm)
Longitud para la edad — niños (cm)
Edad−2 SD−1 SDMediana+1 SD+2 SD
Nacimiento46.148.049.951.853.7
1 sem47.349.251.153.054.9
2 sem48.550.452.354.356.2
3 sem49.551.553.455.357.2
4 sem50.552.454.456.358.3
5 sem51.453.455.357.359.2
6 sem52.354.356.258.260.2
7 sem53.155.157.159.161.0
8 sem53.955.957.959.961.9
9 sem54.656.658.760.762.7
10 sem55.457.459.461.463.4
11 sem56.058.160.162.164.1
12 sem56.758.760.862.864.8
3 m57.359.461.463.565.5
4 m59.761.863.966.068.0
5 m61.763.865.968.070.1
6 m63.365.567.669.871.9
7 m64.867.069.271.373.5
8 m66.268.470.672.875.0
9 m67.569.772.074.276.5
10 m68.771.073.375.677.9
11 m69.972.274.576.979.2
12 m71.073.475.778.180.5
13 m72.174.576.979.381.8
14 m73.175.678.080.583.0
15 m74.176.679.181.784.2
16 m75.077.680.282.885.4
17 m76.078.681.283.986.5
18 m76.979.682.385.087.7
19 m77.780.583.286.088.8
20 m78.681.484.287.089.8
21 m79.482.385.188.090.9
22 m80.283.186.089.091.9
23 m81.083.986.989.992.9
24 m81.084.187.190.293.2
Longitud para la edad — niñas (cm)
Longitud para la edad — niñas (cm)
Edad−2 SD−1 SDMediana+1 SD+2 SD
Nacimiento45.447.349.151.052.9
1 sem46.648.450.352.254.1
2 sem47.749.651.553.455.3
3 sem48.650.552.554.456.3
4 sem49.551.453.455.357.3
5 sem50.352.354.256.258.2
6 sem51.153.155.157.159.0
7 sem51.853.855.857.859.9
8 sem52.554.656.658.660.6
9 sem53.255.257.359.361.4
10 sem53.855.957.960.062.1
11 sem54.456.558.660.762.7
12 sem55.057.159.261.363.4
3 m55.657.759.861.964.0
4 m57.859.962.164.366.4
5 m59.661.864.066.268.5
6 m61.263.565.768.070.3
7 m62.765.067.369.671.9
8 m64.066.468.771.173.5
9 m65.367.770.172.675.0
10 m66.569.071.573.976.4
11 m67.770.372.875.377.8
12 m68.971.474.076.679.2
13 m70.072.675.277.880.5
14 m71.073.776.479.181.7
15 m72.074.877.580.283.0
16 m73.075.878.681.484.2
17 m74.076.879.782.585.4
18 m74.977.880.783.686.5
19 m75.878.881.784.787.6
20 m76.779.782.785.788.7
21 m77.580.683.786.789.8
22 m78.481.584.687.790.8
23 m79.282.385.588.791.9
24 m79.382.585.788.992.2
Perímetro cefálico para la edad — niños (cm)
Perímetro cefálico para la edad — niños (cm)
Edad−2 SD−1 SDMediana+1 SD+2 SD
Nacimiento31.933.234.535.737.0
1 sem32.733.935.236.437.6
2 sem33.534.735.937.038.2
3 sem34.235.436.537.738.9
4 sem34.835.937.138.339.4
5 sem35.336.437.638.839.9
6 sem35.736.938.139.240.4
7 sem36.137.338.539.740.8
8 sem36.537.738.940.041.2
9 sem36.938.139.240.441.6
10 sem37.238.439.640.841.9
11 sem37.538.739.941.142.3
12 sem37.939.040.241.442.6
3 m38.139.340.541.742.9
4 m39.240.441.642.844.0
5 m40.141.442.643.845.0
6 m40.942.143.344.645.8
7 m41.542.744.045.246.4
8 m42.043.344.545.847.0
9 m42.543.745.046.347.5
10 m42.944.145.446.747.9
11 m43.244.545.847.048.3
12 m43.544.846.147.448.6
13 m43.845.046.347.648.9
14 m44.045.346.647.949.2
15 m44.245.546.848.149.4
16 m44.445.747.048.349.6
17 m44.645.947.248.549.8
18 m44.746.047.448.750.0
19 m44.946.247.548.950.2
20 m45.046.447.749.050.4
21 m45.246.547.849.250.5
22 m45.346.648.049.350.7
23 m45.446.848.149.550.8
24 m45.546.948.349.651.0
Perímetro cefálico para la edad — niñas (cm)
Perímetro cefálico para la edad — niñas (cm)
Edad−2 SD−1 SDMediana+1 SD+2 SD
Nacimiento31.532.733.935.136.2
1 sem32.233.434.635.736.9
2 sem32.934.135.236.437.5
3 sem33.534.735.837.038.2
4 sem34.035.236.437.538.7
5 sem34.535.736.838.039.2
6 sem34.936.137.338.539.6
7 sem35.336.537.738.940.1
8 sem35.636.838.039.240.4
9 sem35.937.138.439.640.8
10 sem36.237.438.739.941.1
11 sem36.537.739.040.241.4
12 sem36.838.039.340.541.7
3 m37.138.339.540.842.0
4 m38.139.340.641.843.1
5 m38.940.241.542.744.0
6 m39.640.942.243.544.8
7 m40.241.542.844.145.5
8 m40.742.043.444.746.0
9 m41.242.543.845.246.5
10 m41.542.944.245.646.9
11 m41.943.244.645.947.3
12 m42.243.544.946.347.6
13 m42.443.845.246.547.9
14 m42.744.145.446.848.2
15 m42.944.345.747.048.4
16 m43.144.545.947.248.6
17 m43.344.746.147.448.8
18 m43.544.946.247.649.0
19 m43.645.046.447.849.2
20 m43.845.246.648.049.4
21 m44.045.346.748.149.5
22 m44.145.546.948.349.7
23 m44.345.647.048.449.8
24 m44.445.847.248.650.0

Cómo leerla

La OMS elaboró estos patrones con niños sanos de seis países, criados en condiciones que favorecen un crecimiento sano, incluida la lactancia materna. La mediana es el centro: la mitad de los bebés está por encima y la otra mitad por debajo. Alrededor del 68 % está entre −1 DE y +1 DE, y alrededor del 95 % entre −2 DE y +2 DE.

El pediatra se fija más en la tendencia de varias medidas que en un número suelto. Hasta los 2 años se mide la longitud tumbado; después, la calculadora usa la talla de pie, como la OMS.

Son valores de referencia, no un diagnóstico. Si una medida te preocupa, o está por debajo de −2 DE o por encima de +2 DE, consulta con tu pediatra.

Fuente: World Health Organization — WHO Child Growth Standards (2006)

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