{"id":7641,"date":"2026-01-29T19:36:04","date_gmt":"2026-01-30T00:36:04","guid":{"rendered":"https:\/\/swimrightmarjcc.org\/?p=7641"},"modified":"2026-05-26T12:15:30","modified_gmt":"2026-05-26T16:15:30","slug":"calculadora-de-aumento-de-peso-del-bebe","status":"publish","type":"post","link":"https:\/\/swimrightmarjcc.org\/es\/calculadora-de-aumento-de-peso-del-bebe\/","title":{"rendered":"Calculadora de aumento de peso del beb\u00e9"},"content":{"rendered":"<div style=\"max-width: 900px; margin: 0 auto; font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; font-size: 18px; line-height: 1.6; color: #2c3e50;\">\n  \n  <!-- Updated date (US format) -->\n  <div style=\"margin-bottom: 24px; font-size: 15px; color: #5a6c7e; border-bottom: 1px solid #eef2f6; padding-bottom: 12px;\">\n    <strong>\ud83d\udcc5 Actualizado:<\/strong> 26 de mayo de 2026\n  <\/div>\n\n  <!-- INTRO (blue block - Key insight) -->\n  <div style=\"background-color: #f0f7ff; border-left: 5px solid #1e6fdf; padding: 24px 28px; margin: 24px 0; border-radius: 12px;\">\n    <p style=\"margin: 0; font-size: 18px;\"><strong>\ud83d\udd0d Informaci\u00f3n clave:<\/strong> Muchos padres controlan de cerca el peso de su beb\u00e9, pregunt\u00e1ndose si el aumento de peso actual se ajusta a los patrones de crecimiento t\u00edpicos. Esta herramienta compara el aumento de peso real con las expectativas promedio para su edad, ayud\u00e1ndote a comprender el desarrollo de tu beb\u00e9.<\/p>\n  <\/div>\n\n  <!-- Main introductory text -->\n  <p style=\"margin-bottom: 24px;\">Controlar el peso de tu beb\u00e9 es una de las mejores maneras de asegurarte de que est\u00e1 creciendo sano. Cada beb\u00e9 es \u00fanico, pero los pediatras utilizan tablas de crecimiento estandarizadas de la <strong>Organizaci\u00f3n Mundial de la Salud (OMS)<\/strong> y <strong>Centros para el Control y la Prevenci\u00f3n de Enfermedades (CDC)<\/strong> Para identificar patrones t\u00edpicos de aumento de peso. Esta calculadora proporciona una evaluaci\u00f3n basada en evidencia del aumento de peso de su beb\u00e9 en comparaci\u00f3n con estos est\u00e1ndares cl\u00ednicos.<\/p>\n\n  <!-- WHY THIS MATTERS (small heading + text) -->\n  <h3 style=\"font-size: 26px; color: #1e6fdf; margin: 40px 0 16px;\">\u00bfPor qu\u00e9 controlar el aumento de peso del beb\u00e9?<\/h3>\n  <p style=\"margin-bottom: 24px;\">El aumento de peso constante es un indicador clave de una nutrici\u00f3n adecuada y una buena salud en general. En el primer a\u00f1o de vida, los beb\u00e9s suelen... <strong>Duplican su peso al nacer en 4-5 meses.<\/strong> y <strong>tripl\u00edcalo en 12 meses<\/strong>. Sin embargo, cada beb\u00e9 tiene su propio ritmo de desarrollo. Esta herramienta te ayuda a saber en qu\u00e9 etapa se encuentra tu beb\u00e9 y cu\u00e1ndo debes consultar con tu pediatra.<\/p>\n\n  <!-- ========================================= -->\n  <!-- BABY WEIGHT GAIN CALCULATOR -->\n  <!-- ========================================= -->\n  <div style=\"background: white; border-radius: 28px; box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1); margin: 40px 0; overflow: hidden;\">\n    <div style=\"background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%); color: white; padding: 24px; text-align: center;\">\n      <h2 style=\"color: white; margin: 0; font-size: 28px;\">\ud83c\udf7c Calculadora de aumento de peso del beb\u00e9<\/h2>\n      <p style=\"margin: 8px 0 0;\">Controla el crecimiento de tu beb\u00e9 seg\u00fan las directrices de la OMS\/CDC.<\/p>\n    <\/div>\n    <div style=\"padding: 28px;\">\n      \n      <!-- Unit Toggle -->\n      <div style=\"margin-bottom: 24px;\">\n        <label style=\"display: block; font-weight: 600; margin-bottom: 8px;\">\ud83d\udccf Unidad de medida<\/label>\n        <div style=\"display: flex; gap: 12px;\">\n          <button type=\"button\" id=\"bwg-unit-lbs\" data-unit=\"lbs\" style=\"flex:1; padding: 12px; border: 2px solid #2ecc71; background: #2ecc71; color: white; border-radius: 40px; cursor: pointer; font-weight: 600;\">Libras (lbs)<\/button>\n          <button type=\"button\" id=\"bwg-unit-kg\" data-unit=\"kg\" style=\"flex:1; padding: 12px; border: 2px solid #2ecc71; background: white; color: #2ecc71; border-radius: 40px; cursor: pointer; font-weight: 600;\">Kilogramos (kg)<\/button>\n        <\/div>\n      <\/div>\n      \n      <!-- Birth Weight -->\n      <div style=\"margin-bottom: 20px;\">\n        <label style=\"display: block; font-weight: 600; margin-bottom: 8px;\" id=\"bwg-birth-label\">\ud83d\udc76 Peso al nacer del beb\u00e9 (libras)<\/label>\n        <input type=\"number\" id=\"bwg-birth-weight\" min=\"0\" step=\"0.1\" placeholder=\"Por ejemplo, 7,5\" style=\"width:100%; padding: 14px; border-radius: 12px; border: 1px solid #ddd; font-size: 16px;\">\n        <div id=\"bwg-birth-error\" style=\"color: #e74c3c; font-size: 13px; margin-top: 5px; display: none;\">Por favor ingrese un peso al nacer v\u00e1lido<\/div>\n      <\/div>\n      \n      <!-- Current Weight -->\n      <div style=\"margin-bottom: 20px;\">\n        <label style=\"display: block; font-weight: 600; margin-bottom: 8px;\" id=\"bwg-current-label\">\ud83d\udcca Peso actual del beb\u00e9 (libras)<\/label>\n        <input type=\"number\" id=\"bwg-current-weight\" min=\"0\" step=\"0.1\" placeholder=\"p. ej., 15.2\" style=\"width:100%; padding: 14px; border-radius: 12px; border: 1px solid #ddd; font-size: 16px;\">\n        <div id=\"bwg-current-error\" style=\"color: #e74c3c; font-size: 13px; margin-top: 5px; display: none;\">Por favor, introduzca un peso actual v\u00e1lido<\/div>\n      <\/div>\n      \n      <!-- Age -->\n      <div style=\"margin-bottom: 20px;\">\n        <label style=\"display: block; font-weight: 600; margin-bottom: 8px;\">\ud83d\udcc5 Edad actual del beb\u00e9 (meses)<\/label>\n        <input type=\"number\" id=\"bwg-age-months\" min=\"0\" max=\"24\" step=\"0.1\" placeholder=\"p. ej., 5.5\" style=\"width:100%; padding: 14px; border-radius: 12px; border: 1px solid #ddd; font-size: 16px;\">\n        <div id=\"bwg-age-error\" style=\"color: #e74c3c; font-size: 13px; margin-top: 5px; display: none;\">Ingrese una edad v\u00e1lida (0-24 meses)<\/div>\n      <\/div>\n      \n      <!-- Milestone Info -->\n      <div style=\"background: #fff8e1; padding: 12px 16px; border-radius: 12px; margin-bottom: 20px; font-size: 14px; border-left: 3px solid #ffb300;\">\n        <strong>\ud83d\udcca Hitos t\u00edpicos de peso:<\/strong> Los beb\u00e9s suelen duplicar su peso al nacer entre los 4 y 5 meses, y triplicarlo a los 12 meses. Estas son pautas generales; cada beb\u00e9 crece a su propio ritmo.\n      <\/div>\n      \n      <button id=\"bwg-calculate-btn\" style=\"background: #2ecc71; color: white; border: none; width: 100%; padding: 16px; font-size: 18px; font-weight: 600; border-radius: 40px; cursor: pointer;\">\ud83d\udcc8 Calcular el aumento de peso<\/button>\n      \n      <!-- Results -->\n      <div id=\"bwg-results\" style=\"display: none; margin-top: 32px;\"><\/div>\n      \n    <\/div>\n  <\/div>\n\n  <!-- DISCLAIMER (yellow block) -->\n  <div style=\"background-color: #fff5e6; border-left: 5px solid #f5a623; padding: 20px 24px; margin: 32px 0; border-radius: 12px;\">\n    <p style=\"margin: 0; font-weight: 500;\">\u26a0\ufe0f Nota importante: Los patrones de aumento de peso var\u00edan significativamente entre los beb\u00e9s sanos. Una sola medici\u00f3n proporciona informaci\u00f3n limitada. El crecimiento constante a lo largo de la curva percentil en la gr\u00e1fica de crecimiento de su pediatra es m\u00e1s importante que cualquier dato aislado.<\/p>\n  <\/div>\n\n  <!-- H2: Results Interpretation -->\n  <h2 style=\"font-size: 32px; color: #0a2942; border-bottom: 3px solid #1e6fdf; padding-bottom: 8px; margin: 48px 0 24px;\">\ud83d\udcd6 Entendiendo tus resultados<\/h2>\n  <p style=\"margin-bottom: 24px;\">La calculadora anterior te ofrece tres datos clave: <strong>aumento de peso diario<\/strong> (en onzas o gramos), <strong>porcentaje del peso al nacer<\/strong>, y una comparaci\u00f3n con el <strong>rango esperado<\/strong> Para la edad de tu beb\u00e9. Esto es lo que significa cada m\u00e9trica:<\/p>\n  \n  <ul style=\"margin-left: 24px; margin-bottom: 32px;\">\n    <li><strong>Aumento de peso diario<\/strong> \u2014 Para los reci\u00e9n nacidos, lo habitual es entre 15 y 30 gramos (0,5-1,0 onzas) al d\u00eda. Esta cantidad disminuye a medida que el beb\u00e9 crece.<\/li>\n    <li><strong>Porcentaje del peso al nacer<\/strong> \u2014 A los 4-5 meses, la mayor\u00eda de los beb\u00e9s alcanzan 200% (el doble). A los 12 meses, ~300% (el triple).<\/li>\n    <li><strong>Rango esperado<\/strong> \u2014 Basado en datos de la OMS\/CDC. &quot;Por debajo&quot; o &quot;Por encima&quot; no siempre significa preocupaci\u00f3n; lo que m\u00e1s importa son las tendencias a lo largo del tiempo.<\/li>\n  <\/ul>\n\n  <!-- CARDS (flex grid) -->\n  <div style=\"display: flex; flex-wrap: wrap; gap: 24px; margin: 48px 0;\">\n    <div style=\"flex: 1; min-width: 220px; background-color: #e6f7f0; border-radius: 24px; padding: 24px;\">\n      <div style=\"font-size: 48px;\">\ud83d\udc76<\/div>\n      <h3 style=\"font-size: 24px; color: #1e6fdf; margin: 16px 0 8px;\">Seguimiento de ganancias diarias<\/h3>\n      <p>Controla el aumento de peso en onzas\/d\u00eda o gramos\/d\u00eda para asegurar un progreso constante.<\/p>\n    <\/div>\n    <div style=\"flex: 1; min-width: 220px; background-color: #f0f7ff; border-radius: 24px; padding: 24px;\">\n      <div style=\"font-size: 48px;\">\ud83d\udcc8<\/div>\n      <h3 style=\"font-size: 24px; color: #1e6fdf; margin: 16px 0 8px;\">Comparar con el nacimiento<\/h3>\n      <p>Considere el peso actual como porcentaje del peso al nacer: el doble a los 5 meses y el triple a los 12.<\/p>\n    <\/div>\n    <div style=\"flex: 1; min-width: 220px; background-color: #fef9e6; border-radius: 24px; padding: 24px;\">\n      <div style=\"font-size: 48px;\">\ud83d\udc68\u200d\u2695\ufe0f<\/div>\n      <h3 style=\"font-size: 24px; color: #1e6fdf; margin: 16px 0 8px;\">Orientaci\u00f3n pedi\u00e1trica<\/h3>\n      <p>Sepa exactamente cu\u00e1ndo debe hablar con su m\u00e9dico sobre los patrones de crecimiento.<\/p>\n    <\/div>\n  <\/div>\n\n  <!-- H3: Typical Weight Gain Table -->\n  <h3 style=\"font-size: 26px; color: #1e6fdf; margin: 40px 0 16px;\">\ud83d\udcca Aumento de peso t\u00edpico seg\u00fan la edad (OMS\/CDC)<\/h3>\n  \n  <!-- TABLE -->\n  <div style=\"overflow-x: auto; margin: 32px 0;\">\n    <table style=\"width: 100%; border-collapse: collapse; border-radius: 16px; overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,0.05);\">\n      <thead>\n        <tr style=\"background-color: #1e6fdf; color: white;\">\n          <th style=\"padding: 14px; text-align: left;\">Edad<\/th>\n          <th style=\"padding: 14px; text-align: left;\">Ganancia diaria (oz)<\/th>\n          <th style=\"padding: 14px; text-align: left;\">Ganancia diaria (g)<\/th>\n          <th style=\"padding: 14px; text-align: left;\">Peso vs. Nacimiento<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr style=\"background-color: #f8fafc;\"><td style=\"padding: 12px; border-bottom:1px solid #e2e8f0;\">0-3 meses<\/td><td style=\"padding: 12px;\">0,7-1,0 onzas<\/td><td style=\"padding: 12px;\">20-30 g<\/td><td style=\"padding: 12px;\">Gana aproximadamente 0,5 kg al mes.<\/td><\/tr>\n        <tr><td style=\"padding: 12px; border-bottom:1px solid #e2e8f0;\">3-6 meses<\/td><td style=\"padding: 12px;\">0,5-0,7 onzas<\/td><td style=\"padding: 12px;\">15-20 g<\/td><td style=\"padding: 12px;\">Se duplica en 4-5 meses.<\/td><\/tr>\n        <tr style=\"background-color: #f8fafc;\"><td style=\"padding: 12px; border-bottom:1px solid #e2e8f0;\">6-12 meses<\/td><td style=\"padding: 12px;\">0,3-0,5 onzas<\/td><td style=\"padding: 12px;\">10-15 g<\/td><td style=\"padding: 12px;\">Se triplica en 12 meses<\/td><\/tr>\n        <tr><td style=\"padding: 12px; border-bottom:1px solid #e2e8f0;\">12-24 meses<\/td><td style=\"padding: 12px;\">0,2-0,3 onzas<\/td><td style=\"padding: 12px;\">6-9 g<\/td><td style=\"padding: 12px;\">Ganancia m\u00e1s lenta y constante<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <!-- FIGURE with image -->\n  <figure style=\"margin: 40px 0; border-radius: 24px; box-shadow: 0 20px 35px -12px rgba(0,0,0,0.2); overflow: hidden;\">\n    <img decoding=\"async\" src=\"https:\/\/swimrightmarjcc.org\/wp-content\/uploads\/2025\/12\/is-my-childs-height-normal-for-their-age-AI-gen-1024x683.png\" alt=\"Tabla de crecimiento del peso del beb\u00e9\" style=\"width: 100%; display: block;\">\n    <figcaption style=\"text-align: center; font-size: 14px; color: #5a6c7e; padding: 12px;\">Tabla de crecimiento de la OMS: seguimiento de los percentiles de peso del beb\u00e9 desde el nacimiento hasta los 24 meses.<\/figcaption>\n  <\/figure>\n\n  <!-- FAQ Accordion -->\n  <h2 style=\"font-size: 32px; color: #0a2942; border-bottom: 3px solid #1e6fdf; padding-bottom: 8px; margin: 56px 0 24px;\">\u2753 Preguntas frecuentes<\/h2>\n  \n  <details style=\"margin-bottom: 16px; background: #f9fafb; padding: 8px 20px; border-radius: 20px;\">\n    <summary style=\"font-weight: 700; font-size: 20px; padding: 12px 0; cursor: pointer; color: #0a2942;\">\u00bfCu\u00e1nto peso debe ganar un beb\u00e9 cada d\u00eda?<\/summary>\n    <p style=\"margin: 8px 0 20px;\">Durante los primeros meses, la mayor\u00eda de los beb\u00e9s aumentan entre <strong>De 0,5 a 1 onza al d\u00eda (15-30 gramos)<\/strong>. Este ritmo disminuye a medida que envejecen. El aumento diario puede variar significativamente de un d\u00eda para otro, por lo que lo que m\u00e1s importa es la tendencia general a lo largo de las semanas.<\/p>\n  <\/details>\n  <details style=\"margin-bottom: 16px; background: #f9fafb; padding: 8px 20px; border-radius: 20px;\">\n    <summary style=\"font-weight: 700; font-size: 20px; padding: 12px 0; cursor: pointer; color: #0a2942;\">\u00bfQu\u00e9 significa si mi beb\u00e9 est\u00e1 \u201cpor debajo del rango esperado\u201d?<\/summary>\n    <p style=\"margin: 8px 0 20px;\">Una sola medida por debajo del rango no necesariamente indica un problema. Los beb\u00e9s crecen a ritmos diferentes y algunos son naturalmente m\u00e1s peque\u00f1os. Sin embargo, si el aumento de peso de su beb\u00e9 ha... <strong>se ralentiz\u00f3 significativamente<\/strong> Si su hijo presenta un descenso en el percentil de su gr\u00e1fica de crecimiento, es un buen tema para comentar con su pediatra.<\/p>\n  <\/details>\n  <details style=\"margin-bottom: 16px; background: #f9fafb; padding: 8px 20px; border-radius: 20px;\">\n    <summary style=\"font-weight: 700; font-size: 20px; padding: 12px 0; cursor: pointer; color: #0a2942;\">Mi beb\u00e9 naci\u00f3 prematuro. \u00bfEsta calculadora funciona para prematuros?<\/summary>\n    <p style=\"margin: 8px 0 20px;\">Esta herramienta utiliza rangos est\u00e1ndar para beb\u00e9s nacidos <strong>a t\u00e9rmino (37-42 semanas)<\/strong>. Para los beb\u00e9s prematuros, los proveedores de atenci\u00f3n m\u00e9dica utilizan un <strong>edad ajustada<\/strong> (contando desde la fecha prevista de parto) y diferentes tablas de crecimiento. Siga siempre las indicaciones del equipo m\u00e9dico que atiende a su beb\u00e9.<\/p>\n  <\/details>\n  <details style=\"margin-bottom: 16px; background: #f9fafb; padding: 8px 20px; border-radius: 20px;\">\n    <summary style=\"font-weight: 700; font-size: 20px; padding: 12px 0; cursor: pointer; color: #0a2942;\">\u00bfCon qu\u00e9 frecuencia debo pesar a mi beb\u00e9 en casa?<\/summary>\n    <p style=\"margin: 8px 0 20px;\">El pesaje frecuente en casa es <strong>No recomendado<\/strong> ya que puede causar preocupaci\u00f3n innecesaria. Las peque\u00f1as fluctuaciones diarias son normales. Controles oficiales de peso durante <strong>visitas pedi\u00e1tricas programadas<\/strong> (a las 2 semanas, 2, 4, 6, 9, 12, 15, 18 y 24 meses) son suficientes para controlar el crecimiento en la mayor\u00eda de los casos.<\/p>\n  <\/details>\n  <details style=\"margin-bottom: 16px; background: #f9fafb; padding: 8px 20px; border-radius: 20px;\">\n    <summary style=\"font-weight: 700; font-size: 20px; padding: 12px 0; cursor: pointer; color: #0a2942;\">\u00bfInfluye la lactancia materna frente a la alimentaci\u00f3n con f\u00f3rmula en el aumento de peso?<\/summary>\n    <p style=\"margin: 8px 0 20px;\">Los beb\u00e9s amamantados y los alimentados con f\u00f3rmula tienen patrones de crecimiento ligeramente diferentes. En los primeros 3-4 meses, los beb\u00e9s alimentados con f\u00f3rmula pueden ganar peso m\u00e1s r\u00e1pidamente. Las tablas de crecimiento de la OMS reflejan <strong>Crecimiento \u00f3ptimo para lactantes amamantados<\/strong>, Las tablas de los CDC incluyen ambos m\u00e9todos. Su pediatra puede ayudarle a interpretar el crecimiento de su beb\u00e9 seg\u00fan el m\u00e9todo de alimentaci\u00f3n.<\/p>\n  <\/details>\n\n  <!-- CONCLUSION (dark blue block) -->\n  <div style=\"background-color: #0a2942; color: white; padding: 40px 32px; border-radius: 28px; margin: 56px 0 32px; text-align: center;\">\n    <h3 style=\"font-size: 28px; color: white; margin-top: 0;\">\ud83d\udc99 Conclusi\u00f3n<\/h3>\n    <p style=\"font-size: 18px; line-height: 1.5;\">El aumento de peso es una referencia \u00fatil, pero no la \u00fanica medida de salud. Los chequeos pedi\u00e1tricos regulares, una nutrici\u00f3n adecuada (leche materna o f\u00f3rmula) y un entorno afectuoso son clave para un desarrollo saludable. Utilice esta calculadora como una <strong>herramienta educativa<\/strong>, Y siempre consulte a un especialista si tiene alguna inquietud sobre el patr\u00f3n de crecimiento de su beb\u00e9.<\/p>\n  <\/div>\n\n  <!-- Related links -->\n  <div style=\"margin: 32px 0 48px; padding: 20px; background: #f8fafc; border-radius: 20px;\">\n    <p style=\"font-weight: 700; margin-bottom: 12px;\">\ud83d\udcda Tambi\u00e9n te pueden resultar \u00fatiles estas calculadoras y art\u00edculos:<\/p>\n    <ul style=\"margin-left: 20px;\">\n      <li><a href=\"#\" style=\"color: #1e6fdf; text-decoration: none;\">Calculadora de longitud infantil (0-12 meses)<\/a><\/li>\n      <li><a href=\"#\" style=\"color: #1e6fdf; text-decoration: none;\">Calculadora de ingesta de leche de f\u00f3rmula\/leche materna<\/a><\/li>\n      <li><a href=\"#\" style=\"color: #1e6fdf; text-decoration: none;\">Calculadora de preparaci\u00f3n para la alimentaci\u00f3n s\u00f3lida del beb\u00e9<\/a><\/li>\n      <li><a href=\"#\" style=\"color: #1e6fdf; text-decoration: none;\">Calculadora de percentiles de la tabla de crecimiento de los CDC<\/a><\/li>\n    <\/ul>\n  <\/div>\n\n<\/div>\n\n<script>\n(function() {\n  \/\/ DOM elements\n  const unitLbs = document.getElementById('bwg-unit-lbs');\n  const unitKg = document.getElementById('bwg-unit-kg');\n  const birthLabel = document.getElementById('bwg-birth-label');\n  const currentLabel = document.getElementById('bwg-current-label');\n  const birthInput = document.getElementById('bwg-birth-weight');\n  const currentInput = document.getElementById('bwg-current-weight');\n  const ageInput = document.getElementById('bwg-age-months');\n  const calcBtn = document.getElementById('bwg-calculate-btn');\n  const resultsDiv = document.getElementById('bwg-results');\n  \n  let currentUnit = 'lbs';\n  \n  \/\/ Unit toggle\n  if (unitLbs) {\n    unitLbs.onclick = function() {\n      currentUnit = 'lbs';\n      unitLbs.style.background = '#2ecc71';\n      unitLbs.style.color = 'white';\n      unitKg.style.background = 'white';\n      unitKg.style.color = '#2ecc71';\n      birthLabel.innerHTML = \"\ud83d\udc76 Baby's birth weight (lbs)\";\n      currentLabel.innerHTML = \"\ud83d\udcca Baby's current weight (lbs)\";\n      birthInput.placeholder = 'e.g., 7.5';\n      currentInput.placeholder = 'e.g., 15.2';\n      birthInput.step = '0.1';\n      currentInput.step = '0.1';\n    };\n  }\n  if (unitKg) {\n    unitKg.onclick = function() {\n      currentUnit = 'kg';\n      unitKg.style.background = '#2ecc71';\n      unitKg.style.color = 'white';\n      unitLbs.style.background = 'white';\n      unitLbs.style.color = '#2ecc71';\n      birthLabel.innerHTML = \"\ud83d\udc76 Baby's birth weight (kg)\";\n      currentLabel.innerHTML = \"\ud83d\udcca Baby's current weight (kg)\";\n      birthInput.placeholder = 'e.g., 3.4';\n      currentInput.placeholder = 'e.g., 6.9';\n      birthInput.step = '0.01';\n      currentInput.step = '0.01';\n    };\n  }\n  \n  \/\/ Helper functions\n  function calculateDailyGain(birthWeight, currentWeight, ageMonths, unit) {\n    const weightGain = currentWeight - birthWeight;\n    const days = ageMonths * 30.44;\n    if (unit === 'lbs') {\n      const gainPerDayOz = (weightGain * 16) \/ days;\n      return { value: gainPerDayOz, unit: 'ounces', display: gainPerDayOz.toFixed(1) + ' oz per day' };\n    } else {\n      const gainPerDayG = (weightGain * 1000) \/ days;\n      return { value: gainPerDayG, unit: 'grams', display: gainPerDayG.toFixed(1) + ' g per day' };\n    }\n  }\n  \n  function calculatePercentage(birthWeight, currentWeight) {\n    return ((currentWeight \/ birthWeight) * 100).toFixed(1);\n  }\n  \n  function getExpectedRange(ageMonths, birthWeight, unit) {\n    let lowerPercent, upperPercent;\n    if (ageMonths <= 5) {\n      lowerPercent = 100 + (140 - 100) \/ 5 * ageMonths;\n      upperPercent = 100 + (210 - 100) \/ 5 * ageMonths;\n    } else if (ageMonths <= 12) {\n      lowerPercent = 140 + (250 - 140) \/ (12 - 5) * (ageMonths - 5);\n      upperPercent = 210 + (310 - 210) \/ (12 - 5) * (ageMonths - 5);\n    } else {\n      lowerPercent = 250 + (350 - 250) \/ (24 - 12) * (ageMonths - 12);\n      upperPercent = 310 + (400 - 310) \/ (24 - 12) * (ageMonths - 12);\n    }\n    const lowerWeight = birthWeight * lowerPercent \/ 100;\n    const upperWeight = birthWeight * upperPercent \/ 100;\n    const unitLabel = unit === 'lbs' ? 'lbs' : 'kg';\n    const decimals = unit === 'lbs' ? 1 : 2;\n    return {\n      lowerPercent: lowerPercent.toFixed(1),\n      upperPercent: upperPercent.toFixed(1),\n      lowerWeight: lowerWeight.toFixed(decimals),\n      upperWeight: upperWeight.toFixed(decimals),\n      unit: unitLabel\n    };\n  }\n  \n  function getAssessment(percentage, expectedRange) {\n    const pct = parseFloat(percentage);\n    const lower = parseFloat(expectedRange.lowerPercent);\n    const upper = parseFloat(expectedRange.upperPercent);\n    if (pct < lower) {\n      return { text: '\ud83d\udcc9 Below Expected Range', class: 'assessment-below', detail: 'Your baby\\'s weight is below the typical range for their age. This may be normal variation, but consider discussing with your pediatrician.' };\n    } else if (pct > upper) {\n      return { text: '\ud83d\udcc8 Above Expected Range', class: 'assessment-above', detail: 'Your baby\\'s weight is above the typical range for their age. This is often normal, especially if your baby was larger at birth.' };\n    } else {\n      return { text: '\u2705 Within Expected Range', class: 'assessment-within', detail: 'Great news! Your baby\\'s weight is within the typical range for their age. Keep up the good work!' };\n    }\n  }\n  \n  function getDailyGainInterpretation(value, unit) {\n    if (unit === 'ounces') {\n      if (value < 0.4) return '\u26a0\ufe0f On the lower side of typical daily gain (0.4-1.0 oz\/day). Monitor trends.';\n      if (value > 1.0) return '\ud83d\udcc8 On the higher side of typical daily gain. Usually fine, especially if baby is active.';\n      return '\u2705 Within the typical range of 0.4-1.0 oz per day.';\n    } else {\n      if (value < 15) return '\u26a0\ufe0f On the lower side of typical daily gain (15-30 g\/day). Monitor trends.';\n      if (value > 30) return '\ud83d\udcc8 On the higher side of typical daily gain. Usually fine.';\n      return '\u2705 Within the typical range of 15-30 g per day.';\n    }\n  }\n  \n  \/\/ Calculate on click\n  if (calcBtn) {\n    calcBtn.onclick = function() {\n      \/\/ Reset errors\n      document.getElementById('bwg-birth-error').style.display = 'none';\n      document.getElementById('bwg-current-error').style.display = 'none';\n      document.getElementById('bwg-age-error').style.display = 'none';\n      \n      const birthWeight = parseFloat(birthInput.value);\n      const currentWeight = parseFloat(currentInput.value);\n      const ageMonths = parseFloat(ageInput.value);\n      \n      let isValid = true;\n      if (!birthWeight || birthWeight <= 0 || birthWeight > (currentUnit === 'lbs' ? 30 : 15)) {\n        document.getElementById('bwg-birth-error').style.display = 'block';\n        isValid = false;\n      }\n      if (!currentWeight || currentWeight <= 0 || currentWeight > (currentUnit === 'lbs' ? 100 : 50)) {\n        document.getElementById('bwg-current-error').style.display = 'block';\n        isValid = false;\n      }\n      if (currentWeight <= birthWeight) {\n        document.getElementById('bwg-current-error').innerHTML = 'Current weight must be greater than birth weight';\n        document.getElementById('bwg-current-error').style.display = 'block';\n        isValid = false;\n      }\n      if (!ageMonths || ageMonths <= 0 || ageMonths > 24) {\n        document.getElementById('bwg-age-error').style.display = 'block';\n        isValid = false;\n      }\n      if (!isValid) return;\n      \n      const dailyGain = calculateDailyGain(birthWeight, currentWeight, ageMonths, currentUnit);\n      const percentage = calculatePercentage(birthWeight, currentWeight);\n      const expectedRange = getExpectedRange(ageMonths, birthWeight, currentUnit);\n      const assessment = getAssessment(percentage, expectedRange);\n      \n      let bgColor, borderColor;\n      if (assessment.class === 'assessment-below') { bgColor = '#ffebee'; borderColor = '#e53935'; }\n      else if (assessment.class === 'assessment-above') { bgColor = '#fff3e0'; borderColor = '#ff9800'; }\n      else { bgColor = '#e8f5e9'; borderColor = '#43a047'; }\n      \n      resultsDiv.innerHTML = `\n        <div style=\"background: ${bgColor}; border-left: 5px solid ${borderColor}; border-radius: 20px; padding: 24px;\">\n          <div style=\"text-align: center; margin-bottom: 20px;\">\n            <div style=\"font-size: 28px; font-weight: 700; color: #2c3e50;\">\ud83d\udcca Weight Gain Assessment<\/div>\n          <\/div>\n          <div style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 20px;\">\n            <div style=\"background: white; border-radius: 12px; padding: 16px; text-align: center;\">\n              <div style=\"font-weight: 600; color: #1e6fdf;\">\ud83d\udcc8 Daily Gain<\/div>\n              <div style=\"font-size: 28px; font-weight: bold;\">${dailyGain.display}<\/div>\n              <div style=\"font-size: 13px;\">${getDailyGainInterpretation(dailyGain.value, dailyGain.unit)}<\/div>\n            <\/div>\n            <div style=\"background: white; border-radius: 12px; padding: 16px; text-align: center;\">\n              <div style=\"font-weight: 600; color: #1e6fdf;\">\ud83c\udfaf vs Birth Weight<\/div>\n              <div style=\"font-size: 28px; font-weight: bold;\">${percentage}%<\/div>\n              <div style=\"font-size: 13px;\">Current weight is ${percentage}% of birth weight<\/div>\n            <\/div>\n            <div style=\"background: white; border-radius: 12px; padding: 16px; text-align: center;\">\n              <div style=\"font-weight: 600; color: #1e6fdf;\">\ud83d\udccf Expected Range<\/div>\n              <div style=\"font-size: 20px; font-weight: bold;\">${expectedRange.lowerWeight} - ${expectedRange.upperWeight} ${expectedRange.unit}<\/div>\n              <div style=\"font-size: 13px;\">For age ${ageMonths} months<\/div>\n            <\/div>\n          <\/div>\n          <div style=\"text-align: center; padding: 12px; background: white; border-radius: 12px;\">\n            <div style=\"font-size: 20px; font-weight: 700; color: #0a2942;\">${assessment.text}<\/div>\n            <div style=\"font-size: 14px;\">${assessment.detail}<\/div>\n          <\/div>\n        <\/div>\n      `;\n      resultsDiv.style.display = 'block';\n      resultsDiv.scrollIntoView({ behavior: 'smooth', block: 'nearest' });\n    };\n  }\n})();\n<\/script>","protected":false},"excerpt":{"rendered":"<p>\ud83d\udcc5 Updated: May 26, 2026 \ud83d\udd0d Key insight: Many parents monitor their baby&#8217;s weight closely, wondering if the current gain matches typical growth patterns. This tool compares actual weight gain to average expectations for age, helping you understand your baby&#8217;s development. Tracking your baby&#8217;s weight is one of the best ways to ensure they are [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7641","post","type-post","status-publish","format-standard","hentry","category-uncategorised"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Track Infant Weight Gain and Milestones - SwimRight Academy | Certified Miami Swimming School<\/title>\n<meta name=\"description\" content=\"Check if your baby&#039;s weight gain is on track. This tool compares current weight to birth weight and gives an expected range based on age.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/swimrightmarjcc.org\/es\/calculadora-de-aumento-de-peso-del-bebe\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Track Infant Weight Gain and Milestones - SwimRight Academy | Certified Miami Swimming School\" \/>\n<meta property=\"og:description\" content=\"Check if your baby&#039;s weight gain is on track. This tool compares current weight to birth weight and gives an expected range based on age.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/swimrightmarjcc.org\/es\/calculadora-de-aumento-de-peso-del-bebe\/\" \/>\n<meta property=\"og:site_name\" content=\"SwimRight Academy | Certified Miami Swimming School\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-30T00:36:04+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-26T16:15:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/swimrightmarjcc.org\/wp-content\/uploads\/2025\/12\/is-my-childs-height-normal-for-their-age-AI-gen-1024x683.png\" \/>\n<meta name=\"author\" content=\"Blog Editor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Blog Editor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutos\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Monitoreo del aumento de peso y los logros de los beb\u00e9s - SwimRight Academy | Escuela de nataci\u00f3n certificada de Miami","description":"Comprueba si el aumento de peso de tu beb\u00e9 va por buen camino. 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