BMI / 卡路里计算器
本地运行，HTML页面
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>BMI & 卡路里计算器</title>
<style>
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700&family=Playfair+Display:wght@700&display=swap');
:root {
--primary: #6d28d9;
--accent: #f472b6;
--bg: #0f172a;
--card: #1e2937;
--text: #e2e8f0;
--text-light: #94a3b8;
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: 'Noto Sans SC', system-ui, sans-serif;
background: linear-gradient(135deg, #0f172a 0%, #1e2937 100%);
color: var(--text);
min-height: 100vh;
display: flex;
align-items: flex-start;
justify-content: center;
padding: 16px 12px;
overflow-y: auto;
-webkit-overflow-scrolling: touch;
position: relative;
}
.particles {
position: fixed;
top: 0; left: 0; width: 100%; height: 100%;
pointer-events: none;
z-index: 1;
overflow: hidden;
}
.container {
position: relative;
z-index: 10;
width: 100%;
max-width: 520px;
margin: 0 auto;
}
.header {
text-align: center;
margin-bottom: 24px;
}
.title {
font-family: 'Playfair Display', serif;
font-size: clamp(2.2rem, 6vw, 3rem);
font-weight: 700;
background: linear-gradient(90deg, #c4b5fd, #f472b6);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
margin-bottom: 6px;
}
.subtitle {
color: var(--text-light);
font-size: 1rem;
}
.card {
background: var(--card);
border-radius: 28px;
padding: 32px 24px;
box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.5);
border: 1px solid rgba(167, 139, 250, 0.15);
margin-bottom: 20px;
}
.tabs {
display: flex;
background: rgba(15, 23, 42, 0.7);
border-radius: 9999px;
padding: 5px;
margin-bottom: 28px;
}
.tab {
flex: 1;
padding: 14px 0;
text-align: center;
border-radius: 9999px;
font-weight: 600;
cursor: pointer;
font-size: 1.02rem;
transition: all 0.3s ease;
}
.tab.active {
background: linear-gradient(90deg, var(--primary), var(--accent));
color: white;
box-shadow: 0 4px 15px rgba(109, 40, 217, 0.4);
}
.input-group {
margin-bottom: 20px;
}
label {
display: block;
margin-bottom: 8px;
color: var(--text-light);
font-size: 0.95rem;
}
input, select {
width: 100%;
background: rgba(15, 23, 42, 0.75);
border: 2px solid rgba(148, 163, 184, 0.35);
border-radius: 16px;
padding: 15px 18px;
color: var(--text);
font-size: 1.1rem;
transition: all 0.3s;
}
input:focus, select:focus {
border-color: var(--accent);
box-shadow: 0 0 0 4px rgba(244, 114, 182, 0.2);
outline: none;
}
.result {
margin-top: 28px;
padding: 24px;
background: rgba(15, 23, 42, 0.65);
border-radius: 24px;
border: 2px solid rgba(167, 139, 250, 0.25);
text-align: center;
}
.result-value {
font-size: clamp(2.6rem, 8vw, 3.4rem);
font-weight: 700;
background: linear-gradient(90deg, #c4b5fd, #f472b6);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
line-height: 1.1;
}
.result-label {
font-size: 1.05rem;
color: var(--text-light);
margin: 8px 0 16px;
}
.bmi-category {
padding: 10px 24px;
border-radius: 9999px;
font-weight: 600;
display: inline-block;
font-size: 1.05rem;
}
.btn {
width: 100%;
padding: 17px;
font-size: 1.22rem;
font-weight: 700;
background: linear-gradient(90deg, #6d28d9, #c026d3);
color: white;
border: none;
border-radius: 9999px;
cursor: pointer;
margin-top: 16px;
transition: all 0.4s ease;
}
.btn:hover {
transform: translateY(-2px);
box-shadow: 0 12px 25px -8px #c026d3;
}
.info {
font-size: 0.88rem;
color: var(--text-light);
line-height: 1.55;
padding: 0 8px;
}
.footer {
text-align: center;
margin-top: 32px;
color: #64748b;
font-size: 0.82rem;
}
/* 移动端优化 */
@media (max-width: 480px) {
body {
padding: 12px 8px;
}
.card {
padding: 28px 20px;
}
}
</style>
</head>
<body>
<div class="particles" id="particles"></div>
<div class="container">
<div class="header">
<div class="title">健康计算器</div>
<div class="subtitle">BMI • 基础代谢 • 每日卡路里</div>
</div>
<div class="card">
<div class="tabs">
<div class="tab active" data-tab="bmi">BMI 计算</div>
<div class="tab" data-tab="calorie">卡路里计算</div>
</div>
<!-- BMI 面板 -->
<div id="bmi-panel">
<div class="input-group">
<label>性别</label>
<select id="gender">
<option value="male">男</option>
<option value="female">女</option>
</select>
</div>
<div class="input-group">
<label>年龄（岁）</label>
<input type="number" id="age" value="28" min="10" max="100">
</div>
<div class="input-group">
<label>身高（cm）</label>
<input type="number" id="height" value="170" min="100" max="250">
</div>
<div class="input-group">
<label>体重（kg）</label>
<input type="number" id="weight" value="65" min="30" max="300" step="0.1">
</div>
<button class="btn" id="calcBMI">计算 BMI</button>
<div class="result" id="bmiResult" style="display: none;">
<div class="result-value" id="bmiValue">22.5</div>
<div class="result-label">你的 BMI 值</div>
<div class="bmi-category" id="bmiCategory">正常范围</div>
</div>
</div>
<!-- 卡路里面板 -->
<div id="calorie-panel" style="display: none;">
<div class="input-group">
<label>性别</label>
<select id="gender2">
<option value="male">男</option>
<option value="female">女</option>
</select>
</div>
<div class="input-group">
<label>年龄（岁）</label>
<input type="number" id="age2" value="28" min="10" max="100">
</div>
<div class="input-group">
<label>身高（cm）</label>
<input type="number" id="height2" value="170" min="100" max="250">
</div>
<div class="input-group">
<label>体重（kg）</label>
<input type="number" id="weight2" value="65" min="30" max="300" step="0.1">
</div>
<div class="input-group">
<label>活动水平</label>
<select id="activity">
<option value="1.2">久坐（几乎不运动）</option>
<option value="1.375" selected>轻度活动（每周1-3天）</option>
<option value="1.55">中度活动（每周3-5天）</option>
<option value="1.725">重度活动（每周6-7天）</option>
<option value="1.9">极重度活动（运动员/重体力）</option>
</select>
</div>
<button class="btn" id="calcCalorie">计算每日需求</button>
<div class="result" id="calorieResult" style="display: none;">
<div style="font-size: 1rem; color: var(--text-light);">基础代谢率 BMR</div>
<div class="result-value" id="bmrValue">1580</div>
<div style="margin: 16px 0 8px; color: var(--text-light);">每日总热量消耗 TDEE</div>
<div class="result-value" id="tdeeValue" style="font-size: 2.7rem;">2180</div>
<div class="result-label">kcal / 天</div>
</div>
</div>
</div>
<div class="info">
<strong>说明：</strong><br>
• BMI 是参考指标，不能完全代表健康状况<br>
• 卡路里使用 Harris-Benedict 公式计算<br>
• 建议结合体脂率等其他指标综合判断
</div>
<div class="footer">
纯本地运行 • 数据不上传 • 祝你健康！
</div>
</div>
<script>
// 粒子背景
function createParticles() {
const container = document.getElementById('particles');
for (let i = 0; i < 40; i++) {
const p = document.createElement('div');
const size = Math.random() * 5 + 3;
p.style.position = 'absolute';
p.style.width = `${size}px`;
p.style.height = `${size}px`;
p.style.background = 'rgba(167, 139, 250, 0.3)';
p.style.borderRadius = '50%';
p.style.left = `${Math.random() * 100}vw`;
p.style.top = `${Math.random() * 120}vh`;
p.style.opacity = Math.random() * 0.5 + 0.2;
p.style.animation = `float ${Math.random() * 25 + 18}s linear infinite`;
container.appendChild(p);
}
}
const style = document.createElement('style');
style.innerHTML = `
@keyframes float {
0% { transform: translateY(0) rotate(0deg); }
100% { transform: translateY(-150vh) rotate(720deg); }
}
`;
document.head.appendChild(style);
// 切换面板
document.querySelectorAll('.tab').forEach(tab => {
tab.addEventListener('click', () => {
document.querySelectorAll('.tab').forEach(t => t.classList.remove('active'));
tab.classList.add('active');
const isBMI = tab.dataset.tab === 'bmi';
document.getElementById('bmi-panel').style.display = isBMI ? 'block' : 'none';
document.getElementById('calorie-panel').style.display = isBMI ? 'none' : 'block';
});
});
// BMI 计算
function calculateBMI() {
const height = parseFloat(document.getElementById('height').value);
const weight = parseFloat(document.getElementById('weight').value);
if (!height || !weight || height <= 0 || weight <= 0) {
alert('请输入有效的身高和体重');
return;
}
const bmi = (weight / ((height / 100) ** 2)).toFixed(1);
const resultDiv = document.getElementById('bmiResult');
const valueEl = document.getElementById('bmiValue');
const categoryEl = document.getElementById('bmiCategory');
valueEl.textContent = bmi;
resultDiv.style.display = 'block';
let text = '', color = '';
if (bmi < 18.5) { text = '体重偏轻'; color = '#60a5fa'; }
else if (bmi < 24) { text = '正常范围'; color = '#4ade80'; }
else if (bmi < 28) { text = '超重'; color = '#fbbf24'; }
else { text = '肥胖'; color = '#f87171'; }
categoryEl.textContent = text;
categoryEl.style.backgroundColor = color + '30';
categoryEl.style.color = color;
}
// 卡路里计算
function calculateCalorie() {
const gender = document.getElementById('gender2').value;
const age = parseFloat(document.getElementById('age2').value);
const height = parseFloat(document.getElementById('height2').value);
const weight = parseFloat(document.getElementById('weight2').value);
const activity = parseFloat(document.getElementById('activity').value);
if (!age || !height || !weight || age <= 0 || height <= 0 || weight <= 0) {
alert('请填写完整且有效的信息');
return;
}
let bmr = gender === 'male'
? 88.362 + (13.397 * weight) + (4.799 * height) - (5.677 * age)
: 447.593 + (9.247 * weight) + (3.098 * height) - (4.330 * age);
const tdee = bmr * activity;
document.getElementById('bmrValue').textContent = Math.round(bmr);
document.getElementById('tdeeValue').textContent = Math.round(tdee);
document.getElementById('calorieResult').style.display = 'block';
}
// 按钮事件
document.getElementById('calcBMI').addEventListener('click', calculateBMI);
document.getElementById('calcCalorie').addEventListener('click', calculateCalorie);
// 回车键支持
document.addEventListener('keydown', e => {
if (e.key === 'Enter') {
if (document.getElementById('bmi-panel').style.display !== 'none') {
calculateBMI();
} else {
calculateCalorie();
}
}
});
// 初始化
window.onload = () => {
createParticles();
};
</script>
</body>
</html>