长度换算�?/title> <meta name="description" content="在线长度单位换算工具，支持米、千米、英里、英尺、英寸等单位互换" /> <meta name="keywords" content="长度换算, 单位转换, �? 千米, 英里, 长度计算" /> <meta property="og:title" content="长度换算�? /> <meta property="og:description" content="在线长度单位换算工具，支持米、千米、英里、英尺、英寸等单位互换" /> <meta property="og:type" content="website" /> <meta property="og:url" content="https://essays4u.net/tools/converter/length-converter.html" /> <meta property="og:site_name" content="WebUtils" /> <meta property="og:locale" content="zh_CN" /> <link rel="canonical" href="https://essays4u.net/tools/converter/length-converter.html" /> <style> :root { --bg-deep: #0a0a0f; --bg-surface: #12121a; --bg-card: #1a1a24; --bg-input: #0e0e14; --text-primary: #e8e8ed; --text-secondary: #8888a0; --text-muted: #55556a; --border-subtle: #2a2a3a; --border-strong: #3a3a4a; --accent-cyan: #00f5d4; --accent-magenta: #f72585; --accent-green: #10b981; --accent-red: #f43f5e; --accent-yellow: #fbbf24; --accent-blue: #4cc9f0; --accent-purple: #7b2cbf; --radius-sm: 4px; --radius-md: 8px; --radius-lg: 12px; --font-sans: "Space Grotesk", -apple-system, blinkmacsystemfont, "Segoe UI", roboto, sans-serif; --font-mono: "JetBrains Mono", "Courier New", monospace; --shadow: 0 2px 8px rgba(0, 0, 0, 0.3); } [data-theme="light"] { --bg-deep: #fafafa; --bg-surface: #fff; --bg-card: #fff; --bg-input: #f5f5f5; --text-primary: #1a1a1a; --text-secondary: #666; --text-muted: #999; --border-subtle: #e5e5e5; --border-strong: #d5d5d5; --accent-cyan: #00d4b8; --accent-magenta: #e63975; --shadow: 0 2px 8px rgba(0, 0, 0, 0.08); } * { margin: 0; padding: 0; box-sizing: border-box; } body { font-size: 16px; line-height: 1.6; font-family: var(--font-sans); background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); min-height: 100vh; padding: 20px; } .container { max-width: 600px; margin: 0 auto; } h1 { color: white; text-align: center; margin-bottom: 20px; text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2); } .card { background: white; border-radius: 20px; padding: 28px; box-shadow: 0 15px 50px rgba(0, 0, 0, 0.2); } .input-section { margin-bottom: 24px; } .input-row { display: flex; gap: 12px; } .input-row input { flex: 1; padding: 16px; font-size: 24px; font-weight: bold; border: 2px solid #e0e0e0; border-radius: 12px; text-align: center; } .input-row input:focus { outline: none; border-color: #4facfe; } .input-row select { padding: 16px; border: 2px solid #e0e0e0; border-radius: 12px; font-size: 16px; font-weight: 600; min-width: 120px; } .results { display: grid; gap: 8px; } .result-row { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; background: #f8f8f8; border-radius: 10px; } .result-row.highlight { background: linear-gradient(135deg, #4facfe, #00f2fe); color: white; } .result-unit { font-weight: 500; } .result-value { font-weight: bold; font-family: var(--font-mono); font-size: 16px; } h3 { color: #333; margin: 20px 0 12px; font-size: 15px; } .category { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; } .cat-btn { padding: 8px 16px; border: 2px solid #e0e0e0; background: white; border-radius: 20px; cursor: pointer; font-size: 13px; transition: all 0.3s; } .cat-btn:hover { border-color: #4facfe; } .cat-btn.active { background: #4facfe; color: white; border-color: #4facfe; } .breadcrumb { background: rgba(255, 255, 255, 0.95); padding: 8px 15px; border-radius: 20px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); font-size: 0.85rem; } .breadcrumb a { color: #667eea; text-decoration: none; } .breadcrumb a:hover { text-decoration: underline; } .breadcrumb span { color: #999; margin: 0 5px; } </style>  <link rel="preconnect" href="https://fonts.googleapis.com" /> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin /> <link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap" rel="stylesheet" /> </head> <body> <nav class="breadcrumb"> <a href="../../index.html">首页</a> <span>�?/span> 长度换算�? </nav> <div class="container"> <h1>📏 长度换算�?/h1> <div class="card"> <div class="category"> <button class="cat-btn active" onclick="setCategory('metric')" aria-label="公制"> 公制 </button> <button class="cat-btn" onclick="setCategory('imperial')" aria-label="英制">英制</button> <button class="cat-btn" onclick="setCategory('chinese')" aria-label="市制">市制</button> <button class="cat-btn" onclick="setCategory('all')" aria-label="全部">全部</button> </div> <div class="input-section"> <div class="input-row"> <input type="number" id="valueInput" value="1" oninput="convert()" aria-label="数字输入�? placeholder="请输入数字输入框" /> <select id="unitSelect" onchange="convert()"> <option value="m">�?(m)</option> <option value="km">千米 (km)</option> <option value="cm">厘米 (cm)</option> <option value="mm">毫米 (mm)</option> <option value="ft">英尺 (ft)</option> <option value="in">英寸 (in)</option> <option value="yd">�?(yd)</option> <option value="mi">英里 (mi)</option> <option value="li">�?/option> <option value="zhang">�?/option> <option value="chi">�?/option> <option value="cun">�?/option> </select> </div> </div> <h3>公制单位</h3> <div class="results" id="metricResults"></div> <h3>英制单位</h3> <div class="results" id="imperialResults"></div> <h3>市制单位</h3> <div class="results" id="chineseResults"></div> </div> </div> <script> // All units in meters const units = { // Metric km: { name: "千米", factor: 1000, category: "metric" }, m: { name: "�?, factor: 1, category: "metric" }, cm: { name: "厘米", factor: 0.01, category: "metric" }, mm: { name: "毫米", factor: 0.001, category: "metric" }, um: { name: "微米", factor: 0.000001, category: "metric" }, // Imperial mi: { name: "英里", factor: 1609.344, category: "imperial" }, yd: { name: "�?, factor: 0.9144, category: "imperial" }, ft: { name: "英尺", factor: 0.3048, category: "imperial" }, in: { name: "英寸", factor: 0.0254, category: "imperial" }, // Chinese li: { name: "�?, factor: 500, category: "chinese" }, zhang: { name: "�?, factor: 3.33333, category: "chinese" }, chi: { name: "�?, factor: 0.33333, category: "chinese" }, cun: { name: "�?, factor: 0.03333, category: "chinese" } }; let currentCategory = "all"; function setCategory(cat) { currentCategory = cat; document.querySelectorAll(".cat-btn").forEach((btn) => { btn.classList.toggle( "active", btn.textContent.includes( cat === "metric" ? "公制" : cat === "imperial" ? "英制" : cat === "chinese" ? "市制" : "全部" ) ); }); // Show/hide sections document.querySelectorAll(".results").forEach((r) => (r.style.display = "none")); document.querySelectorAll("h3").forEach((h) => (h.style.display = "none")); if (cat === "all" || cat === "metric") { document.getElementById("metricResults").style.display = "grid"; document.querySelectorAll("h3")[0].style.display = "block"; } if (cat === "all" || cat === "imperial") { document.getElementById("imperialResults").style.display = "grid"; document.querySelectorAll("h3")[1].style.display = "block"; } if (cat === "all" || cat === "chinese") { document.getElementById("chineseResults").style.display = "grid"; document.querySelectorAll("h3")[2].style.display = "block"; } convert(); } function convert() { const value = parseFloat(document.getElementById("valueInput").value) || 0; const fromUnit = document.getElementById("unitSelect").value; // Convert to meters first const meters = value * units[fromUnit].factor; // Generate results by category const metricUnits = ["km", "m", "cm", "mm"]; const imperialUnits = ["mi", "yd", "ft", "in"]; const chineseUnits = ["li", "zhang", "chi", "cun"]; function renderResults(unitList, containerId) { const container = document.getElementById(containerId); container.innerHTML = unitList .map((u) => { const result = meters / units[u].factor; const isHighlight = u === fromUnit; return ` <div class="result-row ${isHighlight ? "highlight" : ""}"> <span class="result-unit">${units[u].name} (${u})</span> <span class="result-value">${formatNumber(result)}</span> </div> `; }) .join(""); } renderResults(metricUnits, "metricResults"); renderResults(imperialUnits, "imperialResults"); renderResults(chineseUnits, "chineseResults"); } function formatNumber(num) { if (Math.abs(num) >= 1000000 || (Math.abs(num) < 0.0001 && num !== 0)) { return num.toExponential(4); } if (Number.isInteger(num)) return num.toString(); return num.toFixed(6).replace(/\.?0+$/, ""); } setCategory("all"); </script> </body> </html>