Ideal Weight Calculator

Ideal Weight Calculator

Enter your height and select your gender to estimate your ideal body weight range using several common formulas.

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.ideal-weight-calculator-container { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; max-width: 600px; margin: 20px auto; padding: 25px; border: 1px solid #e0e0e0; border-radius: 10px; background-color: #ffffff; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08); color: #333; } .ideal-weight-calculator-container h2 { text-align: center; color: #2c3e50; margin-bottom: 20px; font-size: 1.8em; } .ideal-weight-calculator-container p { text-align: center; margin-bottom: 25px; line-height: 1.6; color: #555; } .calculator-inputs .input-group { margin-bottom: 18px; display: flex; flex-direction: column; align-items: flex-start; } .calculator-inputs .input-group label { margin-bottom: 8px; font-weight: bold; color: #34495e; font-size: 0.95em; } .calculator-inputs .input-group input[type="number"] { width: calc(100% – 20px); padding: 12px; border: 1px solid #ccc; border-radius: 6px; font-size: 1em; box-sizing: border-box; transition: border-color 0.3s ease; } .calculator-inputs .input-group input[type="number"]:focus { border-color: #007bff; outline: none; box-shadow: 0 0 5px rgba(0, 123, 255, 0.3); } .calculator-inputs .input-group input[type="radio"] { margin-right: 8px; transform: scale(1.1); } .calculator-inputs .input-group input[type="radio"] + label { font-weight: normal; margin-right: 15px; color: #555; } .calculator-inputs button { width: 100%; padding: 14px 20px; background-color: #28a745; color: white; border: none; border-radius: 6px; font-size: 1.1em; font-weight: bold; cursor: pointer; transition: background-color 0.3s ease, transform 0.2s ease; margin-top: 15px; } .calculator-inputs button:hover { background-color: #218838; transform: translateY(-2px); } .calculator-result { margin-top: 30px; padding: 20px; border-top: 2px solid #eee; background-color: #f9f9f9; border-radius: 8px; text-align: center; color: #333; } .calculator-result h3 { color: #2c3e50; margin-bottom: 15px; font-size: 1.5em; } .calculator-result p { font-size: 1.1em; margin-bottom: 10px; color: #444; } .calculator-result p strong { color: #007bff; } .calculator-result .disclaimer { font-size: 0.85em; color: #777; margin-top: 20px; line-height: 1.5; } function calculateIdealWeight() { var heightFeet = parseFloat(document.getElementById("heightFeet").value); var heightInches = parseFloat(document.getElementById("heightInches").value); var genderMale = document.getElementById("genderMale").checked; var resultDiv = document.getElementById("idealWeightResult"); if (isNaN(heightFeet) || isNaN(heightInches) || heightFeet < 0 || heightInches 11) { resultDiv.innerHTML = "Please enter valid height values."; return; } var totalInches = (heightFeet * 12) + heightInches; var inchesOver5Feet = totalInches – 60; // 5 feet = 60 inches var idealWeightKgDevine, idealWeightKgRobinson, idealWeightKgMiller, idealWeightKgHamwi; if (genderMale) { // Devine Formula (Men): 50 kg + 2.3 kg for each inch over 5 feet idealWeightKgDevine = 50 + (2.3 * inchesOver5Feet); // Robinson Formula (Men): 52 kg + 1.9 kg for each inch over 5 feet idealWeightKgRobinson = 52 + (1.9 * inchesOver5Feet); // Miller Formula (Men): 56.2 kg + 1.41 kg for each inch over 5 feet idealWeightKgMiller = 56.2 + (1.41 * inchesOver5Feet); // Hamwi Formula (Men): 48 kg + 2.7 kg for each inch over 5 feet idealWeightKgHamwi = 48 + (2.7 * inchesOver5Feet); } else { // Female // Devine Formula (Women): 45.5 kg + 2.3 kg for each inch over 5 feet idealWeightKgDevine = 45.5 + (2.3 * inchesOver5Feet); // Robinson Formula (Women): 49 kg + 1.7 kg for each inch over 5 feet idealWeightKgRobinson = 49 + (1.7 * inchesOver5Feet); // Miller Formula (Women): 53.1 kg + 1.36 kg for each inch over 5 feet idealWeightKgMiller = 53.1 + (1.36 * inchesOver5Feet); // Hamwi Formula (Women): 45.5 kg + 2.2 kg for each inch over 5 feet idealWeightKgHamwi = 45.5 + (2.2 * inchesOver5Feet); } // Convert to pounds var idealWeightLbsDevine = idealWeightKgDevine * 2.20462; var idealWeightLbsRobinson = idealWeightKgRobinson * 2.20462; var idealWeightLbsMiller = idealWeightKgMiller * 2.20462; var idealWeightLbsHamwi = idealWeightKgHamwi * 2.20462; var resultsHtml = "

Your Estimated Ideal Weight:

"; resultsHtml += "Devine Formula: " + idealWeightKgDevine.toFixed(1) + " kg (" + idealWeightLbsDevine.toFixed(1) + " lbs)"; resultsHtml += "Robinson Formula: " + idealWeightKgRobinson.toFixed(1) + " kg (" + idealWeightLbsRobinson.toFixed(1) + " lbs)"; resultsHtml += "Miller Formula: " + idealWeightKgMiller.toFixed(1) + " kg (" + idealWeightLbsMiller.toFixed(1) + " lbs)"; resultsHtml += "Hamwi Formula: " + idealWeightKgHamwi.toFixed(1) + " kg (" + idealWeightLbsHamwi.toFixed(1) + " lbs)"; resultsHtml += "These formulas provide an estimated ideal weight based on height and gender. They do not account for body composition (muscle vs. fat), age, or frame size. Always consult a healthcare professional for personalized health and weight advice."; resultDiv.innerHTML = resultsHtml; }

Understanding Your Ideal Weight: More Than Just a Number

The concept of "ideal weight" often sparks curiosity, but it's important to understand that it's not a single, magic number. Instead, it represents a healthy weight range that is generally associated with a lower risk of weight-related health problems for a given height and gender. While various formulas exist to estimate this range, they serve as guidelines rather than definitive targets.

Why is Ideal Weight Important?

Maintaining a weight within a healthy range is crucial for overall well-being. Being significantly overweight or underweight can contribute to various health issues:

  • Overweight/Obesity: Increased risk of heart disease, type 2 diabetes, high blood pressure, certain cancers, sleep apnea, and joint problems.
  • Underweight: Can lead to weakened immune function, osteoporosis, anemia, fertility issues, and malnutrition.

Finding your ideal weight range can be a motivating factor for adopting a healthier lifestyle, including balanced nutrition and regular physical activity.

How Ideal Weight Formulas Work

Our calculator utilizes several widely recognized formulas to provide a comprehensive estimate of your ideal weight. These formulas primarily rely on your height and gender, as these are significant determinants of body mass. Here's a brief overview of the formulas used:

  • Devine Formula: One of the oldest and most commonly cited formulas, it provides a baseline weight for 5 feet of height and adds a specific amount for each additional inch.
  • Robinson Formula: A modification of the Devine formula, offering slightly different coefficients for men and women.
  • Miller Formula: Another variation that adjusts the weight increment per inch over 5 feet.
  • Hamwi Formula: Originally developed for medication dosage calculations, it also provides an estimate of ideal body weight based on height.

Each formula has its own specific coefficients, leading to slightly different results. This is why our calculator presents results from multiple formulas, giving you a broader perspective on your estimated ideal weight range.

Important Considerations Beyond the Numbers

While these formulas offer a useful starting point, they have limitations. They do not account for:

  • Body Composition: Muscle is denser than fat. A highly muscular individual might weigh more than their "ideal" according to these formulas but still be very healthy. Conversely, someone with a high percentage of body fat might fall within the "ideal" range but still have health risks.
  • Frame Size: People with larger bone structures naturally weigh more than those with smaller frames, even at the same height.
  • Age: Ideal weight can subtly shift with age, though these formulas don't typically incorporate it directly.
  • Ethnicity: Some studies suggest that ideal weight ranges might vary slightly across different ethnic groups.

Therefore, it's crucial to view these calculator results as estimates. Your overall health, energy levels, fitness, and how your clothes fit are often better indicators of a healthy weight than a single number from a formula.

Using the Calculator

To use the Ideal Weight Calculator, simply:

  1. Enter your height in feet and inches.
  2. Select your gender (Male or Female).
  3. Click the "Calculate Ideal Weight" button.

The calculator will then display your estimated ideal weight range in both kilograms and pounds, based on the different formulas.

Consult a Professional

For personalized advice regarding your weight and health goals, always consult a healthcare professional, such as a doctor or a registered dietitian. They can take into account your individual health history, body composition, lifestyle, and specific needs to provide tailored recommendations.

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