{"id":1631,"date":"2025-08-05T04:21:43","date_gmt":"2025-08-05T04:21:43","guid":{"rendered":"https:\/\/donhit.com\/en\/?p=1631"},"modified":"2025-08-14T14:50:57","modified_gmt":"2025-08-14T14:50:57","slug":"bmi-calculator","status":"publish","type":"post","link":"https:\/\/donhit.com\/en\/calculator\/bmi-calculator\/","title":{"rendered":"BMI Calculator"},"content":{"rendered":"<p><center><style>\r\n        * {\r\n            margin: 0;\r\n            padding: 0;\r\n            box-sizing: border-box;\r\n        }\r\n\r\n        body {\r\n            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;\r\n            background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);\r\n            background-size: 400% 400%;\r\n            animation: gradientShift 15s ease infinite;\r\n            min-height: 100vh;\r\n            padding: 20px;\r\n            position: relative;\r\n            overflow-x: hidden;\r\n        }\r\n\r\n        body::before {\r\n            content: '';\r\n            position: fixed;\r\n            top: 0;\r\n            left: 0;\r\n            width: 100%;\r\n            height: 100%;\r\n            background-image: \r\n                radial-gradient(circle at 25% 25%, rgba(255,255,255,0.2) 2px, transparent 2px),\r\n                radial-gradient(circle at 75% 75%, rgba(255,255,255,0.1) 1px, transparent 1px);\r\n            background-size: 60px 60px, 40px 40px;\r\n            z-index: -1;\r\n            animation: float 20s infinite linear;\r\n        }\r\n\r\n        @keyframes gradientShift {\r\n            0% { background-position: 0% 50%; }\r\n            50% { background-position: 100% 50%; }\r\n            100% { background-position: 0% 50%; }\r\n        }\r\n\r\n        @keyframes float {\r\n            0% { transform: translateY(0px) rotate(0deg); }\r\n            50% { transform: translateY(-10px) rotate(180deg); }\r\n            100% { transform: translateY(0px) rotate(360deg); }\r\n        }\r\n\r\n        .container123 {\r\n            max-width: 1000px;\r\n            margin: 0 auto;\r\n                        background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);\r\n            border-radius: 40px;\r\n            padding: 40px;\r\n            backdrop-filter: blur(20px);\r\n            box-shadow: \r\n                0 25px 50px rgba(0, 0, 0, 0.25),\r\n                inset 0 1px 0 rgba(255, 255, 255, 0.3),\r\n                inset 0 -1px 0 rgba(0, 0, 0, 0.1);\r\n            border: 1px solid rgba(255, 255, 255, 0.2);\r\n            position: relative;\r\n            overflow: hidden;\r\n            animation: containerPulse 6s ease-in-out infinite;\r\n        }\r\n\r\n        .container123::before {\r\n            content: '';\r\n            position: absolute;\r\n            top: -50%;\r\n            left: -50%;\r\n            width: 200%;\r\n            height: 200%;\r\n            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);\r\n            animation: rotate 10s linear infinite;\r\n            z-index: -1;\r\n        }\r\n\r\n        @keyframes containerPulse {\r\n            0%, 100% { transform: scale(1); }\r\n            50% { transform: scale(1.01); }\r\n        }\r\n\r\n        @keyframes rotate {\r\n            0% { transform: rotate(0deg); }\r\n            100% { transform: rotate(360deg); }\r\n        }\r\n\r\n        .header123 {\r\n            text-align: center;\r\n            margin-bottom: 40px;\r\n        }\r\n\r\n        .title {\r\n            font-size: 4rem;\r\n            font-weight: 900;\r\n            background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #ffeaa7);\r\n            background-size: 300% 300%;\r\n            -webkit-background-clip: text;\r\n            -webkit-text-fill-color: transparent;\r\n            background-clip: text;\r\n            margin-bottom: 10px;\r\n            text-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);\r\n            animation: titleGradient 8s ease-in-out infinite, titleBounce 3s ease-in-out infinite;\r\n            position: relative;\r\n        }\r\n\r\n        .title::after {\r\n            content: '';\r\n            position: absolute;\r\n            bottom: -10px;\r\n            left: 50%;\r\n            width: 100px;\r\n            height: 4px;\r\n            background: linear-gradient(45deg, #ff6b6b, #4ecdc4);\r\n            transform: translateX(-50%);\r\n            border-radius: 2px;\r\n            animation: underlineGlow 2s ease-in-out infinite alternate;\r\n        }\r\n\r\n        @keyframes titleGradient {\r\n            0%, 100% { background-position: 0% 50%; }\r\n            50% { background-position: 100% 50%; }\r\n        }\r\n\r\n        @keyframes titleBounce {\r\n            0%, 100% { transform: translateY(0); }\r\n            50% { transform: translateY(-5px); }\r\n        }\r\n\r\n        @keyframes underlineGlow {\r\n            0% { box-shadow: 0 0 5px rgba(255, 107, 107, 0.5); }\r\n            100% { box-shadow: 0 0 20px rgba(78, 205, 196, 0.8), 0 0 30px rgba(78, 205, 196, 0.4); }\r\n        }\r\n\r\n        .subtitle {\r\n            font-size: 1.3rem;\r\n            color: #666;\r\n            margin-bottom: 20px;\r\n        }\r\n\r\n        .definition-section {\r\n            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);\r\n            border-radius: 25px;\r\n            padding: 35px;\r\n            margin-bottom: 30px;\r\n            color: white;\r\n            text-align: center;\r\n            position: relative;\r\n            overflow: hidden;\r\n            transform: perspective(1000px) rotateX(2deg);\r\n            transition: all 0.4s ease;\r\n        }\r\n\r\n        .definition-section:hover {\r\n            transform: perspective(1000px) rotateX(0deg) translateY(-10px);\r\n            box-shadow: 0 30px 60px rgba(102, 126, 234, 0.4);\r\n        }\r\n\r\n        .definition-section::before {\r\n            content: '';\r\n            position: absolute;\r\n            top: -2px;\r\n            left: -2px;\r\n            right: -2px;\r\n            bottom: -2px;\r\n            background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #667eea);\r\n            z-index: -1;\r\n            border-radius: 27px;\r\n            animation: borderGlow 3s linear infinite;\r\n        }\r\n\r\n        @keyframes borderGlow {\r\n            0% { transform: rotate(0deg); }\r\n            100% { transform: rotate(360deg); }\r\n        }\r\n\r\n        .definition-title {\r\n            font-size: 2rem;\r\n            margin-bottom: 15px;\r\n            font-weight: bold;\r\n        }\r\n\r\n        .definition-text {\r\n            font-size: 1.1rem;\r\n            line-height: 1.6;\r\n        }\r\n\r\n        .formula-section {\r\n            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);\r\n            border-radius: 20px;\r\n            padding: 30px;\r\n            margin-bottom: 30px;\r\n            color: white;\r\n            text-align: center;\r\n        }\r\n\r\n        .formula-title {\r\n            font-size: 2rem;\r\n            margin-bottom: 20px;\r\n            font-weight: bold;\r\n        }\r\n\r\n        .formula-box {\r\n            background: rgba(255, 255, 255, 0.2);\r\n            border-radius: 15px;\r\n            padding: 20px;\r\n            margin: 20px 0;\r\n            border: 2px solid rgba(255, 255, 255, 0.3);\r\n        }\r\n\r\n        .formula {\r\n            font-size: 1.8rem;\r\n            font-weight: bold;\r\n            margin-bottom: 10px;\r\n        }\r\n\r\n        .formula-example {\r\n            font-size: 1rem;\r\n            opacity: 0.9;\r\n        }\r\n\r\n        .categories-section {\r\n            margin-bottom: 30px;\r\n        }\r\n\r\n        .section-title {\r\n            font-size: 2.2rem;\r\n            text-align: center;\r\n            margin-bottom: 25px;\r\n            color: #333;\r\n            font-weight: bold;\r\n        }\r\n\r\n        .categories-grid {\r\n            display: grid;\r\n            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));\r\n            gap: 20px;\r\n        }\r\n\r\n        .category-card {\r\n            border-radius: 20px;\r\n            padding: 30px;\r\n            text-align: center;\r\n            color: white;\r\n            position: relative;\r\n            overflow: hidden;\r\n            transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);\r\n            cursor: pointer;\r\n            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);\r\n        }\r\n\r\n        .category-card:hover {\r\n            transform: translateY(-15px) scale(1.05) rotateY(5deg);\r\n            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);\r\n        }\r\n\r\n        .category-card::before {\r\n            content: '';\r\n            position: absolute;\r\n            top: 0;\r\n            left: -100%;\r\n            width: 100%;\r\n            height: 100%;\r\n            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);\r\n            transition: left 0.7s;\r\n        }\r\n\r\n        .category-card:hover::before {\r\n            left: 100%;\r\n        }\r\n\r\n        .category-card::after {\r\n            content: '';\r\n            position: absolute;\r\n            top: 50%;\r\n            left: 50%;\r\n            width: 0;\r\n            height: 0;\r\n            background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);\r\n            transform: translate(-50%, -50%);\r\n            transition: all 0.6s ease;\r\n        }\r\n\r\n        .category-card:hover::after {\r\n            width: 300px;\r\n            height: 300px;\r\n        }\r\n\r\n        .underweight {\r\n            background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);\r\n        }\r\n\r\n        .normal {\r\n            background: linear-gradient(135deg, #00b894 0%, #00a085 100%);\r\n        }\r\n\r\n        .overweight {\r\n            background: linear-gradient(135deg, #fdcb6e 0%, #e17055 100%);\r\n        }\r\n\r\n        .obese {\r\n            background: linear-gradient(135deg, #e84393 0%, #d63031 100%);\r\n        }\r\n\r\n        .category-title {\r\n            font-size: 1.3rem;\r\n            font-weight: bold;\r\n            margin-bottom: 10px;\r\n        }\r\n\r\n        .category-range {\r\n            font-size: 1.5rem;\r\n            font-weight: bold;\r\n            margin-bottom: 15px;\r\n        }\r\n\r\n        .category-description {\r\n            font-size: 0.95rem;\r\n            opacity: 0.9;\r\n            line-height: 1.4;\r\n        }\r\n\r\n        .calculator-section {\r\n            background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);\r\n            border-radius: 30px;\r\n            padding: 40px;\r\n            margin-bottom: 30px;\r\n            text-align: center;\r\n            position: relative;\r\n            overflow: hidden;\r\n            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);\r\n        }\r\n\r\n        .calculator-section::before {\r\n            content: '';\r\n            position: absolute;\r\n            top: -50%;\r\n            left: -50%;\r\n            width: 200%;\r\n            height: 200%;\r\n            background: \r\n                radial-gradient(circle at 30% 70%, rgba(255,255,255,0.3) 2px, transparent 2px),\r\n                radial-gradient(circle at 70% 30%, rgba(255,255,255,0.2) 1px, transparent 1px);\r\n            background-size: 50px 50px, 30px 30px;\r\n            animation: calculatorFloat 15s infinite linear;\r\n            z-index: 0;\r\n        }\r\n\r\n        .calculator-section > * {\r\n            position: relative;\r\n            z-index: 1;\r\n        }\r\n\r\n        @keyframes calculatorFloat {\r\n            0% { transform: translate(0, 0) rotate(0deg); }\r\n            33% { transform: translate(20px, -20px) rotate(120deg); }\r\n            66% { transform: translate(-20px, 10px) rotate(240deg); }\r\n            100% { transform: translate(0, 0) rotate(360deg); }\r\n        }\r\n\r\n        .calculator-title {\r\n            font-size: 2rem;\r\n            color: #333;\r\n            margin-bottom: 20px;\r\n            font-weight: bold;\r\n        }\r\n\r\n        .input-group {\r\n            display: flex;\r\n            justify-content: center;\r\n            gap: 20px;\r\n            margin-bottom: 20px;\r\n            flex-wrap: wrap;\r\n        }\r\n\r\n        .input-box {\r\n            display: flex;\r\n            flex-direction: column;\r\n            align-items: center;\r\n        }\r\n\r\n        .input-label {\r\n            font-size: 1.1rem;\r\n            color: #333;\r\n            margin-bottom: 10px;\r\n            font-weight: bold;\r\n        }\r\n\r\n        input {\r\n            padding: 15px 25px;\r\n            border: 3px solid transparent;\r\n            background: linear-gradient(white, white) padding-box,\r\n                        linear-gradient(45deg, #667eea, #764ba2) border-box;\r\n            border-radius: 30px;\r\n            font-size: 1.2rem;\r\n            width: 160px;\r\n            text-align: center;\r\n            transition: all 0.4s ease;\r\n            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);\r\n        }\r\n\r\n        input:focus {\r\n            outline: none;\r\n            transform: translateY(-2px) scale(1.05);\r\n            box-shadow: 0 15px 35px rgba(102, 126, 234, 0.3);\r\n            background: linear-gradient(#f8f9fa, #f8f9fa) padding-box,\r\n                        linear-gradient(45deg, #ff6b6b, #4ecdc4) border-box;\r\n        }\r\n\r\n        input:hover {\r\n            transform: translateY(-1px);\r\n            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);\r\n        }\r\n\r\n        .calculate-btn {\r\n            background: linear-gradient(45deg, #667eea, #764ba2, #f093fb);\r\n            background-size: 200% 200%;\r\n            color: white;\r\n            border: none;\r\n            padding: 18px 40px;\r\n            font-size: 1.3rem;\r\n            border-radius: 50px;\r\n            cursor: pointer;\r\n            transition: all 0.4s ease;\r\n            font-weight: bold;\r\n            text-transform: uppercase;\r\n            letter-spacing: 1px;\r\n            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);\r\n            position: relative;\r\n            overflow: hidden;\r\n        }\r\n\r\n        .calculate-btn:hover {\r\n            transform: translateY(-5px) scale(1.05);\r\n            box-shadow: 0 20px 40px rgba(102, 126, 234, 0.6);\r\n            background-position: 100% 0;\r\n            animation: buttonPulse 0.6s ease-in-out;\r\n        }\r\n\r\n        .calculate-btn::before {\r\n            content: '';\r\n            position: absolute;\r\n            top: 0;\r\n            left: -100%;\r\n            width: 100%;\r\n            height: 100%;\r\n            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);\r\n            transition: left 0.5s;\r\n        }\r\n\r\n        .calculate-btn:hover::before {\r\n            left: 100%;\r\n        }\r\n\r\n        @keyframes buttonPulse {\r\n            0%, 100% { transform: translateY(-5px) scale(1.05); }\r\n            50% { transform: translateY(-7px) scale(1.08); }\r\n        }\r\n\r\n        .result {\r\n            margin-top: 20px;\r\n            font-size: 1.3rem;\r\n            font-weight: bold;\r\n            color: #333;\r\n        }\r\n\r\n        .important-notes {\r\n            background: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 100%);\r\n            border-radius: 20px;\r\n            padding: 30px;\r\n            margin-bottom: 30px;\r\n        }\r\n\r\n        .notes-title {\r\n            font-size: 1.8rem;\r\n            color: #2d3436;\r\n            margin-bottom: 20px;\r\n            font-weight: bold;\r\n            text-align: center;\r\n        }\r\n\r\n        .notes-list {\r\n            color: #2d3436;\r\n            font-size: 1rem;\r\n            line-height: 1.6;\r\n        }\r\n\r\n        .note-item {\r\n            margin-bottom: 12px;\r\n            padding-left: 20px;\r\n            position: relative;\r\n        }\r\n\r\n        .note-item::before {\r\n            content: \"\u26a0\ufe0f\";\r\n            position: absolute;\r\n            left: 0;\r\n            top: 0;\r\n        }\r\n\r\n        @media (max-width: 768px) {\r\n            .container {\r\n                padding: 20px;\r\n                margin: 10px;\r\n            }\r\n            \r\n            .title {\r\n                font-size: 2.5rem;\r\n            }\r\n            \r\n            .input-group {\r\n                flex-direction: column;\r\n                align-items: center;\r\n            }\r\n            \r\n            .categories-grid {\r\n                grid-template-columns: 1fr;\r\n            }\r\n        }\r\n    <\/style>\r\n<\/head>\r\n<body>\r\n    <div class=\"container123\">\r\n        <div class=\"header123\">\r\n            <h2 class=\"title\">BMI<\/h2>\r\n            <p class=\"subtitle\">Body Mass Index - Understanding Your Health Metric<\/p>\r\n        <\/div>\r\n\r\n        <div class=\"definition-section\">\r\n            <h2 class=\"definition-title\">What is BMI?<\/h2>\r\n            <p class=\"definition-text\">\r\n                Body Mass Index (BMI) is a simple calculation using a person's height and weight. \r\n                It's used as a screening tool to categorize whether someone is underweight, normal weight, \r\n                overweight, or obese, which can help assess potential health risks.\r\n            <\/p>\r\n        <\/div>\r\n\r\n        <div class=\"formula-section\">\r\n            <h2 class=\"formula-title\">How to Calculate BMI<\/h2>\r\n            <div class=\"formula-box\">\r\n                <div class=\"formula\">BMI = Weight (kg) \u00f7 Height\u00b2 (m\u00b2)<\/div>\r\n                <div class=\"formula-example\">\r\n                    Example: 70 kg \u00f7 (1.75 m)\u00b2 = 70 \u00f7 3.06 = 22.9 BMI\r\n                <\/div>\r\n            <\/div>\r\n            <div class=\"formula-box\">\r\n                <div class=\"formula\">BMI = (Weight (lbs) \u00f7 Height\u00b2 (inches\u00b2)) \u00d7 703<\/div>\r\n                <div class=\"formula-example\">\r\n                    Example: (154 lbs \u00f7 (69 inches)\u00b2) \u00d7 703 = 22.8 BMI\r\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"categories-section\">\r\n            <h2 class=\"section-title\">BMI Categories<\/h2>\r\n            <div class=\"categories-grid\">\r\n                <div class=\"category-card underweight\">\r\n                    <h3 class=\"category-title\">Underweight<\/h3>\r\n                    <div class=\"category-range\">< 18.5<\/div>\r\n                    <p class=\"category-description\">May indicate malnutrition, eating disorder, or underlying health condition<\/p>\r\n                <\/div>\r\n                \r\n                <div class=\"category-card normal\">\r\n                    <h3 class=\"category-title\">Normal Weight<\/h3>\r\n                    <div class=\"category-range\">18.5 - 24.9<\/div>\r\n                    <p class=\"category-description\">Indicates healthy weight range with lower risk of chronic diseases<\/p>\r\n                <\/div>\r\n                \r\n                <div class=\"category-card overweight\">\r\n                    <h3 class=\"category-title\">Overweight<\/h3>\r\n                    <div class=\"category-range\">25.0 - 29.9<\/div>\r\n                    <p class=\"category-description\">May increase risk of heart disease, diabetes, and high blood pressure<\/p>\r\n                <\/div>\r\n                \r\n                <div class=\"category-card obese\">\r\n                    <h3 class=\"category-title\">Obese<\/h3>\r\n                    <div class=\"category-range\">\u2265 30.0<\/div>\r\n                    <p class=\"category-description\">Higher risk of serious health conditions including heart disease and diabetes<\/p>\r\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n\r\n        <div class=\"calculator-section\">\r\n            <h2 class=\"calculator-title\">BMI Calculator<\/h2>\r\n            <div class=\"input-group\">\r\n                <div class=\"input-box\">\r\n                    <label class=\"input-label\">Weight (kg)<\/label>\r\n                    <input type=\"number\" id=\"weight\" placeholder=\"70\" step=\"0.1\">\r\n                <\/div>\r\n                <div class=\"input-box\">\r\n                    <label class=\"input-label\">Height (cm)<\/label>\r\n                    <input type=\"number\" id=\"height\" placeholder=\"175\" step=\"0.1\">\r\n                <\/div>\r\n            <\/div>\r\n            <button class=\"calculate-btn\" onclick=\"calculateBMI()\">Calculate BMI<\/button>\r\n            <div id=\"result\" class=\"result\"><\/div>\r\n        <\/div>\r\n\r\n        <div class=\"important-notes\">\r\n            <h2 class=\"notes-title\">Important Notes<\/h2>\r\n            <div class=\"notes-list\">\r\n                <div class=\"note-item\">BMI doesn't distinguish between muscle and fat mass<\/div>\r\n                <div class=\"note-item\">Athletes may have high BMI due to muscle mass, not fat<\/div>\r\n                <div class=\"note-item\">Age, sex, and ethnicity can affect BMI interpretation<\/div>\r\n                <div class=\"note-item\">BMI is a screening tool, not a diagnostic measure<\/div>\r\n                <div class=\"note-item\">Consult healthcare professionals for complete health assessment<\/div>\r\n                <div class=\"note-item\">Other factors like waist circumference also matter for health<\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <script>\r\n        function calculateBMI() {\r\n            const weight = parseFloat(document.getElementById('weight').value);\r\n            const heightCm = parseFloat(document.getElementById('height').value);\r\n            const resultDiv = document.getElementById('result');\r\n            \r\n            if (!weight || !heightCm) {\r\n                resultDiv.innerHTML = 'Please enter both weight and height';\r\n                resultDiv.style.color = '#e74c3c';\r\n                return;\r\n            }\r\n            \r\n            const heightM = heightCm \/ 100;\r\n            const bmi = weight \/ (heightM * heightM);\r\n            \r\n            let category = '';\r\n            let color = '';\r\n            \r\n            if (bmi < 18.5) {\r\n                category = 'Underweight';\r\n                color = '#74b9ff';\r\n            } else if (bmi < 25) {\r\n                category = 'Normal Weight';\r\n                color = '#00b894';\r\n  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