Recommended Weight Calculator

Recommended Weight Calculator

<input type="number" id="heightFeet" value="5" min="0" step="1" oninput="if(this.value <input type="number" id="heightInches" value="6" min="0" max="11" step="1" oninput="if(this.value 11) this.value = 11;">
<input type="number" id="age" value="30" min="1" step="1" oninput="if(this.value

Understanding Your Recommended Weight

Determining a "recommended weight" is not a one-size-fits-all calculation, as individual body composition, muscle mass, and bone density can vary significantly. However, several widely used formulas and indices provide a good starting point for understanding a healthy weight range for your height and gender.

Ideal Body Weight (IBW) Formulas

Ideal Body Weight (IBW) formulas aim to provide a target weight based primarily on height and gender. One popular method is the Devine Formula, which was originally developed for drug dosage calculations but is now commonly used as a general guideline:

  • For Men: 50 kg + 2.3 kg for each inch over 5 feet
  • For Women: 45.5 kg + 2.3 kg for each inch over 5 feet

These formulas assume a standard body composition and do not account for factors like high muscle mass, which can naturally increase weight without indicating excess body fat.

Body Mass Index (BMI)

The Body Mass Index (BMI) is another widely used screening tool that calculates a person's weight in relation to their height. It's calculated as weight (kg) divided by the square of height (meters):

BMI = weight (kg) / (height (m))^2

BMI categories are generally:

  • Underweight: Below 18.5
  • Normal Weight: 18.5 – 24.9
  • Overweight: 25.0 – 29.9
  • Obese: 30.0 and above

A "healthy weight range" derived from BMI refers to the weight range at which your BMI falls between 18.5 and 24.9. While useful for population studies and general health screening, BMI also has limitations. It doesn't differentiate between fat and muscle mass, meaning a very muscular individual might have a high BMI classified as "overweight" even with low body fat.

Important Considerations

It's crucial to remember that these calculators provide estimates and guidelines. Factors such as:

  • Body Composition: Muscle weighs more than fat.
  • Bone Density: Can influence overall weight.
  • Age: Body composition naturally changes with age.
  • Ethnicity: Different ethnic groups may have different healthy BMI ranges.
  • Health Conditions: Certain medical conditions can affect weight.

For personalized advice on your ideal weight and health goals, always consult with a healthcare professional or a registered dietitian. They can consider your unique health profile, lifestyle, and body composition to provide the most accurate recommendations.

function calculateRecommendedWeight() { var heightFeet = parseFloat(document.getElementById("heightFeet").value); var heightInches = parseFloat(document.getElementById("heightInches").value); var genderMale = document.getElementById("genderMale").checked; var genderFemale = document.getElementById("genderFemale").checked; var age = parseFloat(document.getElementById("age").value); // Age is for context, not direct calculation in these formulas var resultDiv = document.getElementById("result"); resultDiv.innerHTML = ""; // Clear previous results // Input validation if (isNaN(heightFeet) || heightFeet < 0 || isNaN(heightInches) || heightInches 11) { resultDiv.innerHTML = "Please enter valid height values (feet and inches)."; return; } if (isNaN(age) || age < 1) { resultDiv.innerHTML = "Please enter a valid age (must be at least 1)."; return; } // Convert height to total inches var totalInches = (heightFeet * 12) + heightInches; // Convert height to meters for BMI calculation var heightMeters = totalInches * 0.0254; var ibwKg; // Ideal Body Weight in kilograms // Calculate Ideal Body Weight (IBW) using Devine Formula if (genderMale) { if (totalInches <= 60) { // 5 feet ibwKg = 50; } else { ibwKg = 50 + (2.3 * (totalInches – 60)); } } else if (genderFemale) { if (totalInches <= 60) { // 5 feet ibwKg = 45.5; } else { ibwKg = 45.5 + (2.3 * (totalInches – 60)); } } else { resultDiv.innerHTML = "Please select a gender."; return; } var ibwLbs = ibwKg * 2.20462; // Calculate Healthy BMI Weight Range var minWeightKg = 18.5 * (heightMeters * heightMeters); var maxWeightKg = 24.9 * (heightMeters * heightMeters); var minWeightLbs = minWeightKg * 2.20462; var maxWeightLbs = maxWeightKg * 2.20462; // Display results var resultsHTML = "

Your Recommended Weight Estimates:

"; resultsHTML += "Ideal Body Weight (Devine Formula): " + ibwKg.toFixed(1) + " kg (" + ibwLbs.toFixed(1) + " lbs)"; resultsHTML += "Healthy Weight Range (based on BMI 18.5-24.9): " + minWeightKg.toFixed(1) + " kg – " + maxWeightKg.toFixed(1) + " kg (" + minWeightLbs.toFixed(1) + " lbs – " + maxWeightLbs.toFixed(1) + " lbs)"; resultsHTML += "These are general guidelines. Consult a healthcare professional for personalized advice."; resultDiv.innerHTML = resultsHTML; } .calculator-container { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: #f9f9f9; padding: 25px; border-radius: 10px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); max-width: 700px; margin: 20px auto; border: 1px solid #e0e0e0; } .calculator-container h2 { text-align: center; color: #333; margin-bottom: 25px; font-size: 1.8em; } .calculator-inputs label { display: block; margin-bottom: 8px; color: #555; font-weight: bold; } .calculator-inputs input[type="number"], .calculator-inputs select { width: calc(100% – 22px); padding: 12px; margin-bottom: 15px; border: 1px solid #ccc; border-radius: 6px; box-sizing: border-box; font-size: 1em; } .calculator-inputs .radio-group { margin-bottom: 15px; display: flex; gap: 15px; align-items: center; } .calculator-inputs .radio-group input[type="radio"] { margin-right: 5px; width: auto; /* Override default input width */ } .calculator-inputs .radio-group label { display: inline-block; margin-bottom: 0; font-weight: normal; } .calculator-inputs button { background-color: #007bff; color: white; padding: 14px 20px; border: none; border-radius: 6px; cursor: pointer; font-size: 1.1em; width: 100%; transition: background-color 0.3s ease; } .calculator-inputs button:hover { background-color: #0056b3; } .calculator-results { margin-top: 30px; padding: 20px; background-color: #e9f7ef; border: 1px solid #d4edda; border-radius: 8px; color: #155724; font-size: 1.1em; line-height: 1.6; } .calculator-results h3 { color: #0f5132; margin-top: 0; margin-bottom: 15px; font-size: 1.5em; } .calculator-results p { margin-bottom: 10px; } .calculator-results .disclaimer { font-size: 0.9em; color: #6c757d; margin-top: 15px; border-top: 1px solid #d4edda; padding-top: 10px; } .calculator-article { margin-top: 40px; padding-top: 20px; border-top: 1px solid #e0e0e0; color: #333; line-height: 1.7; } .calculator-article h3, .calculator-article h4 { color: #333; margin-top: 25px; margin-bottom: 15px; font-size: 1.6em; } .calculator-article h4 { font-size: 1.3em; } .calculator-article p { margin-bottom: 15px; text-align: justify; } .calculator-article ul { list-style-type: disc; margin-left: 20px; margin-bottom: 15px; } .calculator-article ul li { margin-bottom: 8px; } .calculator-article code { background-color: #eee; padding: 2px 4px; border-radius: 4px; font-family: 'Courier New', Courier, monospace; }

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