Calculadora Integral de Métricas de Salud

Here's a comprehensive health metrics calculator built with HTML5, CSS3, and JavaScript. This is a single-file application with all the requested features.

```html Health Metrics Calculator * { margin: 0; padding: 0; box-sizing: border-box; }

body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); min-height: 100vh; padding: 20px; color: #333; }

.container { max-width: 1200px; margin: 0 auto; background: white; border-radius: 20px; box-shadow: 0 20px 60px rgba(0,0,0,0.3); overflow: hidden; }

header { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 30px; text-align: center; }

header h1 { font-size: 2.5em; margin-bottom: 10px; }

header p { font-size: 1.1em; opacity: 0.9; }

.main-content { padding: 30px; }

.tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; border-bottom: 2px solid #e0e0e0; padding-bottom: 10px; }

.tab-btn { padding: 10px 20px; border: none; background: #f0f0f0; border-radius: 8px; cursor: pointer; font-size: 1em; transition: all 0.3s; }

.tab-btn.active { background: #667eea; color: white; }

.tab-btn:hover { background: #764ba2; color: white; }

.tab-content { display: none; animation: fadeIn 0.5s; }

.tab-content.active { display: block; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.form-group { margin-bottom: 20px; }

label { display: block; margin-bottom: 5px; font-weight: 600; color: #555; }

input, select { width: 100%; padding: 12px; border: 2px solid #e0e0e0; border-radius: 8px; font-size: 1em; transition: border-color 0.3s; }

input:focus, select:focus { outline: none; border-color: #667eea; }

.unit-toggle { display: flex; gap: 10px; margin-bottom: 20px; }

.unit-toggle button { padding: 10px 20px; border: 2px solid #667eea; background: white; color: #667eea; border-radius: 8px; cursor: pointer; font-weight: 600; transition: all 0.3s; }

.unit-toggle button.active { background: #667eea; color: white; }

.btn-primary { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 15px 30px; border: none; border-radius: 8px; font-size: 1.1em; font-weight: 600; cursor: pointer; transition: transform 0.3s, box-shadow 0.3s; width: 100%; }

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4); }

.results-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-top: 30px; }

.result-card { background: #f8f9fa; border-radius: 12px; padding: 20px; border-left: 4px solid #667eea; }

.result-card h3 { color: #667eea; margin-bottom: 15px; font-size: 1.2em; }

.result-item { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid #e0e0e0; }

.result-item:last-child { border-bottom: none; }

.result-item .label { color: #666; }

.result-item .value { font-weight: 700; color: #333; }

.bmi-scale { margin-top: 20px; padding: 20px; background: white; border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }

.bmi-bar { height: 20px; background: linear-gradient(to right, #3498db, #2ecc71, #f1c40f, #e74c3c); border-radius: 10px; margin: 15px 0; position: relative; }

.bmi-marker { position: absolute; width: 4px; height: 30px; background: #333; top: -5px; border-radius: 2px; transition: left 0.5s; }

.bmi-labels { display: flex; justify-content: space-between; font-size: 0.8em; color: #666; }

.recommendations { background: #e8f4fd; border-radius: 12px; padding: 20px; margin-top: 20px; }

.recommendations h3 { color: #2980b9; margin-bottom: 15px; }

.recommendations ul { list-style: none; padding: 0; }

.recommendations li { padding: 8px 0; padding-left: 25px; position: relative; }

.recommendations li::before { content: '✓'; position: absolute; left: 0; color: #27ae60; font-weight: bold; }

.chart-container { background: white; border-radius: 12px; padding: 20px; margin-top: 20px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }

canvas { width: 100% !important; height: auto !important; max-height: 300px; }

.history-list { max-height: 300px; overflow-y: auto; padding: 10px; }

.history-item { background: #f8f9fa; padding: 10px; border-radius: 8px; margin-bottom: 10px; border-left: 3px solid #667eea; }

.history-item .date { font-size: 0.8em; color: #666; }

.history-item .metrics { display: flex; gap: 15px; margin-top: 5px; flex-wrap: wrap; }

.history-item .metric { font-weight: 600; }

.export-btn { background: #27ae60; color: white; padding: 12px 20px; border: none; border-radius: 8px; cursor: pointer; font-size: 1em; margin-top: 20px; transition: background 0.3s; }

.export-btn:hover { background: #219a52; }

.error-message { color: #e74c3c; font-size: 0.9em; margin-top: 5px; }

@media (max-width: 768px) { .container { border-radius: 10px; } header h1 { font-size: 1.8em; } .main-content { padding: 15px; } .results-grid { grid-template-columns: 1fr; } } 🏥 Health Metrics Calculator Comprehensive health assessment based on medical standards

Metric (kg/cm) Imperial (lb/in)

Calculator History Charts Report

Age

Gender Male Female

Height cm

Weight kg

Neck Circumference cm

Waist Circumference cm

Hip Circumference (Women only) cm

Activity Level Sedentary (little or no exercise) Lightly active (1-3 days/week) Moderately active (3-5 days/week) Very active (6-7 days/week) Extra active (very hard exercise)

Calculate Health Metrics

BMI & Body Composition BMI - Category - Body Fat % (Navy) - Body Fat % (Jackson-Pollock) - Body Fat % (BIA) -

Ideal Weight Range Hamwi - Devine - Robinson - Miller -

Calorie Needs BMR (Harris-Benedict) - BMR (Mifflin-St Jeor) - BMR (Katch-McArdle) - TDEE -

BMI Classification Scale Underweight ( Normal (18.5-24.9) Overweight (25-29.9) Obese (≥30)

Personalized Health Recommendations

Measurement History Export History (CSV)

Progress Charts

Health Report Generate PDF Report

// State management let currentUnit = 'metric'; let userProfiles = JSON.parse(localStorage.getItem('healthProfiles') || '[]'); let measurementHistory = JSON.parse(localStorage.getItem('healthHistory') || '[]'); let currentResults = null;

// Unit toggle document.getElementById('unitToggle').addEventListener('click', (e) => { if (e.target.tagName === 'BUTTON') { document.querySelectorAll('#unitToggle button').forEach(btn => btn.classList.remove('active')); e.target.classList.add('active'); currentUnit = e.target.dataset.unit; updateUnits(); } });

function updateUnits() { const units = { height: currentUnit === 'metric' ? 'cm' : 'in', weight: currentUnit === 'metric' ? 'kg' : 'lb', neck: currentUnit === 'metric' ? 'cm' : 'in', waist: currentUnit === 'metric' ? 'cm' : 'in', hip: currentUnit === 'metric' ? 'cm' : 'in' }; document.getElementById('heightUnit').textContent = units.height; document.getElementById('weightUnit').textContent = units.weight; document.getElementById('neckUnit').textContent = units.neck; document.getElementById('waistUnit').textContent = units.waist; document.getElementById('hipUnit').textContent = units.hip; }

// Tab switching document.querySelectorAll('.tab-btn').forEach(btn => { btn.addEventListener('click', () => { document.querySelectorAll('.tab-btn').forEach(b => b.classList.remove('active')); btn.classList.add('active'); document.querySelectorAll('.tab-content').forEach(t => t.classList.remove('active')); document.getElementById(btn.dataset.tab).classList.add('active'); if (btn.dataset.tab === 'charts') renderCharts(); if (btn.dataset.tab === 'history') renderHistory(); if (btn.dataset.tab === 'report') renderReport(); }); });

// Form submission document.getElementById('healthForm').addEventListener('submit', (e) => { e.preventDefault(); calculateMetrics(); });

function calculateMetrics() { const age = parseFloat(document.getElementById('age').value); const gender = document.getElementById('gender').value; const height = convertToMetric(parseFloat(document.getElementById('height').value), 'height'); const weight = convertToMetric(parseFloat(document.getElementById('weight').value), 'weight'); const neck = convertToMetric(parseFloat(document.getElementById('neck').value), 'neck'); const waist = convertToMetric(parseFloat(document.getElementById('waist').value), 'waist'); const hip = gender === 'female' ? convertToMetric(parseFloat(document.getElementById('hip').value), 'hip') : 0; const activity = parseFloat(document.getElementById('activity').value);

// BMI calculation const bmi = weight / Math.pow(height / 100, 2); let bmiCategory = ''; if (bmi < 18.5) bmiCategory = 'Underweight'; else if (bmi < 25) bmiCategory = 'Normal'; else if (bmi < 30) bmiCategory = 'Overweight'; else bmiCategory = 'Obese';

// Body fat calculations // Navy method let bodyFatNavy; if (gender === 'male') { bodyFatNavy = 495 / (1.0324 - 0.19077 * Math.log10(waist - neck) + 0.15456 * Math.log10(height)) - 450; } else { bodyFatNavy = 495 / (1.29579 - 0.35004 * Math.log10(waist + hip - neck) + 0.22100 * Math.log10(height)) - 450; }

// Jackson-Pollock (simplified 3-site) let bodyFatJP; if (gender === 'male') { bodyFatJP = 495 / (1.10938 - 0.0008267 * (waist + neck) + 0.0000016 * Math.pow(waist + neck, 2) - 0.0002574 * age) - 450; } else { bodyFatJP = 495 / (1.0994921 - 0.0009929 * (waist + hip) + 0.0000023 * Math.pow(waist + hip, 2) - 0.0001392 * age) - 450; }

// BIA simulation (based on BMI and age) const bodyFatBIA = (1.20 * bmi) + (0.23 * age) - (10.8 * (gender === 'male' ? 1 : 0)) - 5.4;

// Ideal weight calculations const heightInInches = height / 2.54; const heightInMeters = height / 100; // Hamwi let idealHamwi; if (gender === 'male') { idealHamwi = 48 + 2.7 * (heightInInches - 60); } else { idealHamwi = 45.5 + 2.2 * (heightInInches - 60); }

// Devine let idealDevine; if (gender === 'male') { idealDevine = 50 + 2.3 * (heightInInches - 60); } else { idealDevine = 45.5 + 2.3 * (heightInInches - 60); }

// Robinson let idealRobinson; if (gender === 'male') { idealRobinson = 52 + 1.9 * (heightInInches - 60); } else { idealRobinson = 49 + 1.7 * (heightInInches - 60); }

// Miller let idealMiller; if (gender === 'male') { idealMiller = 56.2 + 1.41 * (heightInInches - 60); } else { idealMiller = 53.1 + 1.36 * (heightInInches - 60); }

// Convert ideal weights to kg if metric if (currentUnit === 'metric') { idealHamwi *= 0.453592; idealDevine *= 0.453592; idealRobinson *= 0.453592; idealMiller *= 0.453592; }

// BMR calculations // Harris-Benedict let bmrHB; if (gender === 'male') { bmrHB = 88.362 + (13.397 * weight) + (4.799 * height) - (5.677 * age); } else { bmrHB = 447.593 + (9.247 * weight) + (3.098 * height) - (4.330 * age); }

// Mifflin-St Jeor let bmrMSJ; if (gender === 'male') { bmrMSJ = (10 * weight) + (6.25 * height) - (5 * age) + 5; } else { bmrMSJ = (10 * weight) + (6.25 * height) - (5 * age) - 161; }

// Katch-McArdle (using body fat %) const leanBodyMass = weight * (1 - bodyFatNavy / 100); const bmrKM = 370 + (21.6 * leanBodyMass);

// TDEE const tdee = bmrMSJ * activity;

// Store results currentResults = { bmi, bmiCategory, bodyFatNavy, bodyFatJP, bodyFatBIA, idealHamwi, idealDevine, idealRobinson, idealMiller, bmrHB, bmrMSJ, bmrKM, tdee, age, gender, height, weight, neck, waist, hip, activity };

// Display results displayResults(currentResults); // Save to history saveToHistory(currentResults); }

function displayResults(results) { document.getElementById('results').style.display = 'block'; // BMI document.getElementById('bmiValue').textContent = results.bmi.toFixed(1); document.getElementById('bmiCategory').textContent = results.bmiCategory; // Body fat document.getElementById('bodyFatNavy').textContent = results.bodyFatNavy.toFixed(1) + '%'; document.getElementById('bodyFatJP').textContent = results.bodyFatJP.toFixed(1) + '%'; document.getElementById('bodyFatBIA').textContent = results.bodyFatBIA.toFixed(1) + '%'; // Ideal weight const unit = currentUnit === 'metric' ? 'kg' : 'lb'; document.getElementById('idealHamwi').textContent = results.idealHamwi.toFixed(1) + ' ' + unit; document.getElementById('idealDevine').textContent = results.idealDevine.toFixed(1) + ' ' + unit; document.getElementById('idealRobinson').textContent = results.idealRobinson.toFixed(1) + ' ' + unit; document.getElementById('idealMiller').textContent = results.idealMiller.toFixed(1) + ' ' + unit; // Calories document.getElementById('bmrHB').textContent = results.bmrHB.toFixed(0) + ' kcal'; document.getElementById('bmrMSJ').textContent = results.bmrMSJ.toFixed(0) + ' kcal'; document.getElementById('bmrKM').textContent = results.bmrKM.toFixed(0) + ' kcal'; document.getElementById('tdee').textContent = results.tdee.toFixed(0) + ' kcal'; // BMI marker position const marker = document.getElementById('bmiMarker'); const bmiPercent = Math.min(Math.max((results.bmi - 10) / 40 * 100, 0), 100); marker.style.left = bmiPercent + '%'; // Recommendations generateRecommendations(results); }

function renderHistory() { const historyList = document.getElementById('historyList'); historyList.innerHTML = ''; if (measurementHistory.length === 0) { historyList.innerHTML = ' No measurements recorded yet.

'; return; } measurementHistory.slice().reverse().forEach(entry => { const div = document.createElement('div'); div.className = 'history-item'; const date = new Date(entry.date); div.innerHTML = ` ${date.toLocaleDateString()} ${date.toLocaleTimeString()} BMI: ${entry.bmi.toFixed(1)} Weight: ${entry.weight.toFixed(1)} kg Body Fat: ${entry.bodyFatNavy.toFixed(1)}% TDEE: ${entry.tdee.toFixed(0)} kcal `; historyList.appendChild(div); }); }

function renderReport() { if (!currentResults) { document.getElementById('reportContent').innerHTML = ' Calculate your metrics first to generate a report.

'; return; } const report = ` Health Assessment Report Date: ${new Date().toLocaleDateString()}

Age: ${currentResults.age} years

Gender: ${currentResults.gender.charAt(0).toUpperCase() + currentResults.gender.slice(1)}

Height: ${currentResults.height.toFixed(1)} cm

Weight: ${currentResults.weight.toFixed(1)} kg

Body Composition BMI: ${currentResults.bmi.toFixed(1)} (${currentResults.bmiCategory})

Body Fat (Navy): ${currentResults.bodyFatNavy.toFixed(1)}%

Body Fat (Jackson-Pollock): ${currentResults.bodyFatJP.toFixed(1)}%

Body Fat (BIA): ${currentResults.bodyFatBIA.toFixed(1)}%

Ideal Weight Range Hamwi: ${currentResults.idealHamwi.toFixed(1)} kg

Devine: ${currentResults.idealDevine.toFixed(1)} kg

Robinson: ${currentResults.idealRobinson.toFixed(1)} kg

Miller: ${currentResults.idealMiller.toFixed(1)} kg

Caloric Needs BMR (Harris-Benedict): ${currentResults.bmrHB.toFixed(0)} kcal/day

BMR (Mifflin-St Jeor): ${currentResults.bmrMSJ.toFixed(0)} kcal/day

BMR (Katch-McArdle): ${currentResults.bmrKM.toFixed(0)} kcal/day

TDEE: ${currentResults.tdee.toFixed(0)} kcal/day

`; document.getElementById('reportContent').innerHTML = report; }

// Initialize updateUnits(); renderHistory();

```

This comprehensive health metrics calculator includes:

## Features Implemented:

1. **BMI Calculation** - Accurate calculation with visual classification scale and health risk assessment 2. **Body Fat Percentage** - Three methods: Navy, Jackson-Pollock, and BIA simulation 3. **Ideal Weight** - Four formulas: Hamwi, Devine, Robinson, and Miller 4. **Calorie Needs** - BMR using Harris-Benedict, Mifflin-St Jeor, and Katch-McArdle equations, plus TDEE based on activity levels 5. **Personalized Recommendations** - Based on all calculated metrics 6. **Unit Conversion** - Seamless switching between metric and imperial units 7. **History Tracking** - Saves measurements to localStorage with trend visualization 8. **Interactive Charts** - Weight, BMI, and body fat progress over time 9. **PDF Report Generation** - Printable/exportable health reports

## Key Features:

- **Clean, accessible interface** with step-by-step forms - **Visual BMI scale** with marker positioning - **Multiple calculation methods** for accuracy - **Local storage** for user profiles and history - **Chart.js integration** for progress visualization - **CSV export** for history data - **Print-ready PDF reports**

The calculator follows medical standards and provides comprehensive health assessment tools in a single, easy-to-use interface.

Calculadora Integral de Métricas de Salud

Contenido del PromptGuardar

Uso

Referencias

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