Army Weight Control Calculator Excel

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Army Weight Control Calculator Excel

Ensure you meet U.S. Army Body Fat and Weight Standards

Army Weight Control Calculator

Enter height in inches (e.g., 5'10" = 70 inches).
Enter current weight in pounds.
Enter age in whole years.
Male Female Select the soldier's gender.
Enter measured body fat percentage. Leave blank if using height/weight only.

Calculation Results

Maximum Allowable Weight:
Weight Status:
Body Fat Status:
Lean Body Mass (LBM): lbs
Required Body Fat % (if overweight): %
Height Category:
Formula Explanation: The U.S. Army uses specific height-weight charts and body fat percentage standards to determine compliance. Soldiers exceeding the maximum allowable weight for their height must meet a specific body fat percentage. The maximum allowable weight is determined by AR 600-9 standards. Body fat percentage is calculated based on measurements or estimated using formulas, and compared against age- and gender-specific limits.

Army Weight Standards Comparison

Max Allowable Weight | Soldier's Current Weight
U.S. Army Height-Weight Standards (AR 600-9) – Example Data
Height (Inches) Max Allowable Weight (lbs)
62145
63149
64153
65157
66161
67165
68170
69174
70178
71182
72187
73191
74196
75200
76205

What is the Army Weight Control Calculator Excel?

The Army Weight Control Calculator Excel is a digital tool designed to help U.S. Army personnel and recruiters quickly assess whether an individual meets the stringent body fat and weight standards mandated by the U.S. Army, primarily outlined in AR 600-9, "The Army Body Composition Program." While often referred to in the context of an Excel spreadsheet due to the prevalence of such tools, this online calculator provides the same functionality and more, offering real-time calculations and clear status indicators.

This calculator is crucial for active-duty soldiers, recruits preparing for enlistment, and unit leaders responsible for monitoring soldier fitness. It helps individuals understand their current standing relative to Army regulations, identify potential issues, and take proactive steps towards compliance. Common misconceptions include believing that only weight matters, or that the standards are uniform across all ages and genders without considering body composition.

Who Should Use It?

  • Active Duty Soldiers: To monitor their own compliance with AR 600-9.
  • Army Recruits: To gauge their eligibility before enlisting.
  • Unit Leaders & Commanders: To track the fitness of their personnel.
  • Fitness Professionals: Working with military personnel.

Common Misconceptions

  • "It's just about weight": The Army considers both maximum allowable weight for height AND body fat percentage.
  • "One size fits all": Standards vary slightly by age and gender.
  • "It's only for failing soldiers": It's a tool for everyone to ensure they are within standards.

{primary_keyword} Formula and Mathematical Explanation

The core of the Army Weight Control Calculator Excel relies on the standards set forth in AR 600-9. The calculation involves comparing the soldier's current metrics against these established benchmarks.

Step-by-Step Derivation

  1. Height Measurement: The soldier's height is recorded in inches.
  2. Maximum Allowable Weight Determination: Based on the soldier's height, the maximum allowable weight is determined using the official U.S. Army Height-Weight Table (found in AR 600-9). This table provides a specific weight limit for each inch of height.
  3. Weight Comparison: The soldier's current weight is compared to the maximum allowable weight for their height.
    • If the soldier's weight is less than or equal to the maximum allowable weight, they are generally considered compliant regarding weight.
    • If the soldier's weight exceeds the maximum allowable weight, they are flagged as overweight and must then meet body fat percentage standards.
  4. Body Fat Percentage Calculation/Verification:
    • If the soldier is overweight, their body fat percentage is measured (e.g., using calipers) or estimated.
    • This measured/estimated body fat percentage is then compared against the maximum allowable body fat percentage for their age group and gender.
  5. Lean Body Mass (LBM) Calculation: If a soldier exceeds the maximum allowable weight but meets the body fat standard, their LBM is calculated. LBM = Current Weight * (1 – (Body Fat % / 100)). This is a key metric to ensure soldiers are not excessively lean or carrying unhealthy fat.
  6. Final Determination:
    • Compliant: Soldier is at or below maximum allowable weight OR is above maximum allowable weight but meets the body fat percentage standard.
    • Non-Compliant (Overweight): Soldier is above maximum allowable weight AND exceeds the maximum allowable body fat percentage for their age and gender.

Variable Explanations

The key variables used in the Army Weight Control Calculator Excel are:

Variables Used in Army Weight Calculation
Variable Meaning Unit Typical Range
Soldier Height The vertical measurement of the soldier. Inches 60 – 80 inches
Soldier Weight The current mass of the soldier. Pounds (lbs) 100 – 300+ lbs
Soldier Age The age of the soldier in years. Years 17 – 60+ years
Soldier Gender Biological sex of the soldier. Categorical (Male/Female) Male, Female
Body Fat Percentage The proportion of the soldier's body mass that is fat tissue. Percent (%) 5 – 40% (typical range, Army limits are stricter)
Max Allowable Weight The maximum weight permitted for a soldier of a given height, per AR 600-9. Pounds (lbs) Varies significantly with height
Max Allowable Body Fat % The maximum body fat percentage permitted for a soldier of a given age and gender, per AR 600-9. Percent (%) Male: 18-26%
Female: 26-36% (varies by age)
Lean Body Mass (LBM) The mass of the soldier excluding fat tissue. Pounds (lbs) Varies with weight and body fat

Practical Examples (Real-World Use Cases)

Let's illustrate how the Army Weight Control Calculator Excel works with practical scenarios:

Example 1: Compliant Soldier

  • Soldier: Male, 28 years old
  • Height: 70 inches (5'10")
  • Weight: 175 lbs
  • Body Fat %: 17%

Calculation:

  • From the AR 600-9 table, the maximum allowable weight for 70 inches is approximately 178 lbs.
  • The soldier's weight (175 lbs) is below the maximum allowable weight (178 lbs).
  • Result: The soldier is considered compliant with weight standards. The calculator would show "Compliant" for Weight Status and likely "Compliant" for Body Fat Status (as they don't need to meet the BFP threshold if under weight limit).

Example 2: Overweight Soldier Meeting Body Fat Standards

  • Soldier: Female, 35 years old
  • Height: 64 inches (5'4″)
  • Weight: 160 lbs
  • Body Fat %: 28%

Calculation:

  • From the AR 600-9 table, the maximum allowable weight for 64 inches is approximately 153 lbs.
  • The soldier's weight (160 lbs) exceeds the maximum allowable weight (153 lbs). Status: Overweight.
  • For a female soldier aged 30-39, the maximum allowable body fat percentage is 33%.
  • The soldier's body fat percentage (28%) is below the maximum allowable (33%).
  • Result: The soldier is considered compliant because they meet the body fat standard despite being over the height-weight limit. The calculator would show "Overweight" for Weight Status but "Compliant" for Body Fat Status. LBM would be calculated: 160 * (1 – (28/100)) = 115.2 lbs.

Example 3: Non-Compliant Soldier

  • Soldier: Male, 22 years old
  • Height: 72 inches (6'0″)
  • Weight: 210 lbs
  • Body Fat %: 25%

Calculation:

  • From the AR 600-9 table, the maximum allowable weight for 72 inches is approximately 187 lbs.
  • The soldier's weight (210 lbs) exceeds the maximum allowable weight (187 lbs). Status: Overweight.
  • For a male soldier aged 17-29, the maximum allowable body fat percentage is 22%.
  • The soldier's body fat percentage (25%) exceeds the maximum allowable (22%).
  • Result: The soldier is considered non-compliant. The calculator would show "Overweight" for Weight Status and "Non-Compliant" for Body Fat Status.

How to Use This Army Weight Control Calculator

Using this Army Weight Control Calculator Excel tool is straightforward. Follow these steps to get accurate results:

Step-by-Step Instructions

  1. Enter Height: Input the soldier's height in inches. If you know it in feet and inches (e.g., 5'10"), convert it (5 feet * 12 inches/foot + 10 inches = 70 inches).
  2. Enter Weight: Input the soldier's current weight in pounds (lbs).
  3. Enter Age: Input the soldier's age in whole years.
  4. Select Gender: Choose 'Male' or 'Female' from the dropdown.
  5. Enter Body Fat Percentage (Optional but Recommended): If known, enter the measured body fat percentage. This is crucial for soldiers who are above the maximum allowable weight for their height. If left blank, the calculator will primarily assess based on height and weight limits.
  6. Click 'Calculate': Press the button to see the results.

How to Read Results

  • Maximum Allowable Weight: This is the highest weight the soldier can be for their given height according to AR 600-9.
  • Weight Status: Indicates if the soldier is "Compliant" (at or below max weight) or "Overweight" (above max weight).
  • Body Fat Status: Indicates if the soldier meets the body fat percentage requirements. This is only relevant if the soldier is flagged as "Overweight." It will show "Compliant" if they meet the BFP standard, or "Non-Compliant" if they exceed it.
  • Lean Body Mass (LBM): Calculated if the soldier is overweight but meets BFP standards. It shows the weight of non-fat components of the body.
  • Required Body Fat %: Shows the maximum body fat percentage the soldier needs to meet if they are currently overweight.
  • Height Category: A general classification based on height (e.g., Short, Medium, Tall).

Decision-Making Guidance

  • If "Compliant" for both Weight and Body Fat: You are meeting Army standards. Continue maintaining a healthy lifestyle.
  • If "Overweight" but "Compliant" for Body Fat: You are currently meeting Army standards, but are above the height-weight limit. Focus on maintaining your body fat percentage and consider healthy weight management strategies.
  • If "Overweight" and "Non-Compliant" for Body Fat: You are not meeting Army standards. You will likely be enrolled in the Army Body Composition Program (ABC_P) and need to take immediate action to reduce body fat and/or weight to meet the standards within the prescribed timeframe. Consult your command and medical personnel.

Key Factors That Affect Army Weight Control Results

Several factors influence the outcome of the Army Weight Control Calculator Excel and an individual's standing within the Army Body Composition Program:

  1. Individual Physiology: Genetics play a significant role in metabolism, body composition, and where the body stores fat. Some individuals naturally have a higher muscle mass or a faster metabolism, affecting their weight and body fat percentage.
  2. Age: As individuals age, metabolism tends to slow down, and body composition can change (e.g., decrease in muscle mass, increase in body fat). AR 600-9 accounts for this by having slightly higher body fat allowances for older age groups.
  3. Gender: Biological differences between males and females result in different body fat distributions and hormonal influences. The Army sets distinct maximum body fat percentages for men and women, with women generally allowed a higher percentage due to essential body fat requirements.
  4. Muscle Mass vs. Fat Mass: Muscle is denser than fat. A very muscular individual might weigh more than the height-weight table allows but still have a low body fat percentage, making them compliant. This highlights why body fat percentage is a critical secondary measure.
  5. Measurement Accuracy: The accuracy of height, weight, and especially body fat measurements is crucial. Inconsistent or incorrect measurements can lead to false assessments. Professional measurement techniques are vital.
  6. Diet and Nutrition: Caloric intake versus expenditure is fundamental. A diet high in processed foods and excess calories, coupled with insufficient physical activity, will lead to weight gain and increased body fat, potentially pushing soldiers out of compliance.
  7. Physical Activity Level: Regular exercise, including both cardiovascular and strength training, helps manage weight, build muscle, and reduce body fat. A sedentary lifestyle contributes to non-compliance.
  8. Hydration: While not a direct input, dehydration can temporarily affect weight readings. Consistent hydration is part of overall health and fitness.

Frequently Asked Questions (FAQ)

Q1: What is the primary regulation for Army weight standards?

A: The primary regulation is AR 600-9, "The Army Body Composition Program."

Q2: Does the Army use BMI?

A: The Army primarily uses a combination of height-weight tables and body fat percentage measurements, not BMI, for its body composition standards.

Q3: What happens if I exceed the maximum allowable weight?

A: If you exceed the maximum allowable weight for your height, you must then meet the maximum allowable body fat percentage for your age and gender. If you fail both, you will likely be enrolled in the Army Body Composition Program (ABC_P).

Q4: How is body fat percentage measured in the Army?

A: Body fat is typically measured using circumference (tape) measurements at specific sites (neck, waist, hips) according to AR 600-9 standards. Direct measurement via calipers or other methods may also be used.

Q5: Are the standards different for males and females?

A: Yes, the maximum allowable weight for a given height and the maximum allowable body fat percentage differ between males and females.

Q6: What are the body fat percentage limits for males and females?

A: For males aged 17-29, the limit is 22%; 30-39 is 23%; 40-49 is 24%; 50+ is 26%. For females aged 17-29, the limit is 30%; 30-39 is 31%; 40-49 is 32%; 50+ is 36%. These can be adjusted slightly based on specific Army policies.

Q7: Can I use this calculator if I'm a recruit?

A: Absolutely. This calculator is an excellent tool for potential recruits to understand the physical standards they need to meet before enlisting.

Q8: What if my weight fluctuates daily? Should I use my lowest or highest weight?

A: You should use your current, official weight. If you are concerned about compliance, aim to maintain a weight comfortably below the maximum allowable weight and within healthy body fat ranges.

Q9: Does the calculator account for muscle mass?

A: Indirectly. While the calculator uses height and weight, the critical factor for muscular individuals is the body fat percentage. If a muscular soldier is over the height-weight limit but meets the body fat standard, they are compliant. The calculator helps determine this by checking both metrics.

// Army Weight Control Calculator Logic var armyStandards = { male: { 17: { maxWeight: 155, maxBFP: 18 }, 18: { maxWeight: 157, maxBFP: 18 }, 19: { maxWeight: 159, maxBFP: 19 }, 20: { maxWeight: 161, maxBFP: 19 }, 21: { maxWeight: 163, maxBFP: 19 }, 22: { maxWeight: 165, maxBFP: 20 }, 23: { maxWeight: 167, maxBFP: 20 }, 24: { maxWeight: 169, maxBFP: 20 }, 25: { maxWeight: 171, maxBFP: 21 }, 26: { maxWeight: 173, maxBFP: 21 }, 27: { maxWeight: 175, maxBFP: 21 }, 28: { maxWeight: 177, maxBFP: 22 }, 29: { maxWeight: 179, maxBFP: 22 }, 30: { maxWeight: 181, maxBFP: 23 }, 31: { maxWeight: 183, maxBFP: 23 }, 32: { maxWeight: 185, maxBFP: 23 }, 33: { maxWeight: 187, maxBFP: 24 }, 34: { maxWeight: 189, maxBFP: 24 }, 35: { maxWeight: 191, maxBFP: 24 }, 36: { maxWeight: 193, maxBFP: 25 }, 37: { maxWeight: 195, maxBFP: 25 }, 38: { maxWeight: 197, maxBFP: 25 }, 39: { maxWeight: 199, maxBFP: 26 }, 40: { maxWeight: 201, maxBFP: 26 }, 41: { maxWeight: 203, maxBFP: 26 }, 42: { maxWeight: 205, maxBFP: 27 }, 43: { maxWeight: 207, maxBFP: 27 }, 44: { maxWeight: 209, maxBFP: 27 }, 45: { maxWeight: 211, maxBFP: 28 }, 46: { maxWeight: 213, maxBFP: 28 }, 47: { maxWeight: 215, maxBFP: 28 }, 48: { maxWeight: 217, maxBFP: 29 }, 49: { maxWeight: 219, maxBFP: 29 }, 50: { maxWeight: 221, maxBFP: 29 }, 51: { maxWeight: 223, maxBFP: 30 }, 52: { maxWeight: 225, maxBFP: 30 }, 53: { maxWeight: 227, maxBFP: 30 }, 54: { maxWeight: 229, maxBFP: 31 }, 55: { maxWeight: 231, maxBFP: 31 }, 56: { maxWeight: 233, maxBFP: 31 }, 57: { maxWeight: 235, maxBFP: 32 }, 58: { maxWeight: 237, maxBFP: 32 }, 59: { maxWeight: 239, maxBFP: 32 } }, female: { 17: { maxWeight: 130, maxBFP: 26 }, 18: { maxWeight: 132, maxBFP: 26 }, 19: { maxWeight: 134, maxBFP: 27 }, 20: { maxWeight: 136, maxBFP: 27 }, 21: { maxWeight: 138, maxBFP: 27 }, 22: { maxWeight: 140, maxBFP: 28 }, 23: { maxWeight: 142, maxBFP: 28 }, 24: { maxWeight: 144, maxBFP: 28 }, 25: { maxWeight: 146, maxBFP: 29 }, 26: { maxWeight: 148, maxBFP: 29 }, 27: { maxWeight: 150, maxBFP: 29 }, 28: { maxWeight: 152, maxBFP: 30 }, 29: { maxWeight: 154, maxBFP: 30 }, 30: { maxWeight: 156, maxBFP: 31 }, 31: { maxWeight: 158, maxBFP: 31 }, 32: { maxWeight: 160, maxBFP: 31 }, 33: { maxWeight: 162, maxBFP: 32 }, 34: { maxWeight: 164, maxBFP: 32 }, 35: { maxWeight: 166, maxBFP: 32 }, 36: { maxWeight: 168, maxBFP: 33 }, 37: { maxWeight: 170, maxBFP: 33 }, 38: { maxWeight: 172, maxBFP: 33 }, 39: { maxWeight: 174, maxBFP: 34 }, 40: { maxWeight: 176, maxBFP: 34 }, 41: { maxWeight: 178, maxBFP: 34 }, 42: { maxWeight: 180, maxBFP: 35 }, 43: { maxWeight: 182, maxBFP: 35 }, 44: { maxWeight: 184, maxBFP: 35 }, 45: { maxWeight: 186, maxBFP: 36 }, 46: { maxWeight: 188, maxBFP: 36 }, 47: { maxWeight: 190, maxBFP: 36 }, 48: { maxWeight: 192, maxBFP: 37 }, 49: { maxWeight: 194, maxBFP: 37 }, 50: { maxWeight: 196, maxBFP: 37 }, 51: { maxWeight: 198, maxBFP: 38 }, 52: { maxWeight: 200, maxBFP: 38 }, 53: { maxWeight: 202, maxBFP: 38 }, 54: { maxWeight: 204, maxBFP: 39 }, 55: { maxWeight: 206, maxBFP: 39 }, 56: { maxWeight: 208, maxBFP: 39 }, 57: { maxWeight: 210, maxBFP: 40 }, 58: { maxWeight: 212, maxBFP: 40 }, 59: { maxWeight: 214, maxBFP: 40 } } }; // Simplified height-weight table data for interpolation/lookup var heightWeightTable = [ { height: 60, maxWeight: 136 }, { height: 61, maxWeight: 140 }, { height: 62, maxWeight: 145 }, { height: 63, maxWeight: 149 }, { height: 64, maxWeight: 153 }, { height: 65, maxWeight: 157 }, { height: 66, maxWeight: 161 }, { height: 67, maxWeight: 165 }, { height: 68, maxWeight: 170 }, { height: 69, maxWeight: 174 }, { height: 70, maxWeight: 178 }, { height: 71, maxWeight: 182 }, { height: 72, maxWeight: 187 }, { height: 73, maxWeight: 191 }, { height: 74, maxWeight: 196 }, { height: 75, maxWeight: 200 }, { height: 76, maxWeight: 205 }, { height: 77, maxWeight: 209 }, { height: 78, maxWeight: 214 }, { height: 79, maxWeight: 218 }, { height: 80, maxWeight: 223 } ]; var chart = null; // Global variable for chart instance function getMaxAllowableWeight(heightInches) { if (heightInches heightWeightTable[heightWeightTable.length – 1].height) return heightWeightTable[heightWeightTable.length – 1].maxWeight; for (var i = 0; i = heightWeightTable[i].height && heightInches <= heightWeightTable[i + 1].height) { var h1 = heightWeightTable[i].height; var w1 = heightWeightTable[i].maxWeight; var h2 = heightWeightTable[i + 1].height; var w2 = heightWeightTable[i + 1].maxWeight; // Linear interpolation var maxWeight = w1 + (heightInches – h1) * (w2 – w1) / (h2 – h1); return Math.round(maxWeight * 10) / 10; // Round to one decimal place } } return null; // Should not happen } function getArmyStandards(age, gender) { var ageGroup = parseInt(age); var genderKey = gender; if (ageGroup 59) ageGroup = 59; // Cap at max defined age if (armyStandards[genderKey] && armyStandards[genderKey][ageGroup]) { return armyStandards[genderKey][ageGroup]; } return null; // Standards not found for this age/gender combination } function validateInput(id, errorId, min, max, allowEmpty) { var input = document.getElementById(id); var errorElement = document.getElementById(errorId); var value = input.value.trim(); var isValid = true; errorElement.style.display = 'none'; // Hide error by default if (value === "" && !allowEmpty) { errorElement.textContent = "This field is required."; errorElement.style.display = 'block'; isValid = false; } else if (value !== "") { var numValue = parseFloat(value); if (isNaN(numValue)) { errorElement.textContent = "Please enter a valid number."; errorElement.style.display = 'block'; isValid = false; } else if (min !== null && numValue max) { errorElement.textContent = "Value cannot exceed " + max + "."; errorElement.style.display = 'block'; isValid = false; } } return isValid; } function calculateArmyWeight() { // Clear previous errors document.getElementById('heightError').style.display = 'none'; document.getElementById('weightError').style.display = 'none'; document.getElementById('ageError').style.display = 'none'; document.getElementById('bfpError').style.display = 'none'; // Validate inputs var isValidHeight = validateInput('soldierHeight', 'heightError', 1, 120); // Realistic height range var isValidWeight = validateInput('soldierWeight', 'weightError', 1, 1000); // Realistic weight range var isValidAge = validateInput('soldierAge', 'ageError', 17, 65); // Realistic age range for service var isValidBFP = validateInput('bodyFatPercentage', 'bfpError', 1, 99, true); // Allow empty if (!isValidHeight || !isValidWeight || !isValidAge || !isValidBFP) { return; // Stop calculation if any input is invalid } var height = parseFloat(document.getElementById('soldierHeight').value); var weight = parseFloat(document.getElementById('soldierWeight').value); var age = parseInt(document.getElementById('soldierAge').value); var gender = document.getElementById('soldierGender').value; var bodyFatPercentage = document.getElementById('bodyFatPercentage').value === "" ? null : parseFloat(document.getElementById('bodyFatPercentage').value); var maxAllowableWeight = getMaxAllowableWeight(height); var standards = getArmyStandards(age, gender); var weightStatus = ""; var bodyFatStatus = ""; var leanBodyMass = "–"; var requiredBfp = "–"; var heightCategory = ""; // Determine Height Category (simplified) if (height = 65 && height maxAllowableWeight; weightStatus = isOverweightByHeight ? "Overweight" : "Compliant"; if (bodyFatPercentage !== null && standards !== null) { var maxBFP = standards.maxBFP; requiredBfp = maxBFP.toFixed(1) + " %"; var meetsBFP = bodyFatPercentage <= maxBFP; if (isOverweightByHeight) { bodyFatStatus = meetsBFP ? "Compliant" : "Non-Compliant"; if (meetsBFP) { // Calculate Lean Body Mass leanBodyMass = (weight * (1 – (bodyFatPercentage / 100))).toFixed(1) + " lbs"; } } else { // If not overweight by height, BFP status is generally compliant unless specific exceptions apply bodyFatStatus = "Compliant"; } } else if (isOverweightByHeight) { // If BFP not provided or standards not found, cannot determine BFP status definitively bodyFatStatus = "Requires BFP"; requiredBfp = "N/A (Enter BFP)"; } else { // If not overweight by height and BFP not provided, assume compliant bodyFatStatus = "Compliant"; requiredBfp = "N/A (Not Overweight)"; } document.getElementById('weightStatus').textContent = weightStatus; document.getElementById('bodyFatStatus').textContent = bodyFatStatus; document.getElementById('leanBodyMass').textContent = leanBodyMass; document.getElementById('requiredBfp').textContent = requiredBfp; updateChart(weight, maxAllowableWeight); } function resetCalculator() { document.getElementById('soldierHeight').value = "70"; // Default to 5'10" document.getElementById('soldierWeight').value = "175"; // Default to a reasonable weight document.getElementById('soldierAge').value = "25"; document.getElementById('soldierGender').value = "male"; document.getElementById('bodyFatPercentage').value = ""; // Clear errors document.getElementById('heightError').style.display = 'none'; document.getElementById('weightError').style.display = 'none'; document.getElementById('ageError').style.display = 'none'; document.getElementById('bfpError').style.display = 'none'; // Reset results display document.getElementById('maxAllowableWeight').textContent = "–"; document.getElementById('weightStatus').textContent = "–"; document.getElementById('bodyFatStatus').textContent = "–"; document.getElementById('leanBodyMass').textContent = "–"; document.getElementById('requiredBfp').textContent = "–"; document.getElementById('heightCategory').textContent = "–"; // Reset chart if (chart) { chart.destroy(); chart = null; } initializeChart(); // Re-initialize with default empty state } function copyResults() { var resultsText = "Army Weight Control Calculation Results:\n\n"; resultsText += "Maximum Allowable Weight: " + document.getElementById('maxAllowableWeight').textContent + "\n"; resultsText += "Weight Status: " + document.getElementById('weightStatus').textContent + "\n"; resultsText += "Body Fat Status: " + document.getElementById('bodyFatStatus').textContent + "\n"; resultsText += "Lean Body Mass (LBM): " + document.getElementById('leanBodyMass').textContent + "\n"; resultsText += "Required Body Fat % (if overweight): " + document.getElementById('requiredBfp').textContent + "\n"; resultsText += "Height Category: " + document.getElementById('heightCategory').textContent + "\n\n"; resultsText += "Key Assumptions:\n"; resultsText += "- Age: " + document.getElementById('soldierAge').value + "\n"; resultsText += "- Gender: " + document.getElementById('soldierGender').value + "\n"; resultsText += "- Height: " + document.getElementById('soldierHeight').value + " inches\n"; resultsText += "- Current Weight: " + document.getElementById('soldierWeight').value + " lbs\n"; resultsText += "- Body Fat %: " + (document.getElementById('bodyFatPercentage').value === "" ? "Not Provided" : document.getElementById('bodyFatPercentage').value + "%") + "\n"; var textArea = document.createElement("textarea"); textArea.value = resultsText; document.body.appendChild(textArea); textArea.select(); try { document.execCommand("copy"); alert("Results copied to clipboard!"); } catch (err) { console.error("Unable to copy results: ", err); alert("Failed to copy results. Please copy manually."); } document.body.removeChild(textArea); } // Charting Logic using Canvas API function initializeChart() { var ctx = document.getElementById('weightChart').getContext('2d'); chart = new Chart(ctx, { type: 'bar', // Use bar chart for better comparison data: { labels: ['Current Weight', 'Max Allowable Weight'], datasets: [{ label: 'Soldier Weight (lbs)', data: [], // Will be populated by updateChart backgroundColor: 'rgba(40, 167, 69, 0.6)', // Success color for current weight borderColor: 'rgba(40, 167, 69, 1)', borderWidth: 1 }, { label: 'Max Allowable Weight (lbs)', data: [], // Will be populated by updateChart backgroundColor: 'rgba(0, 74, 153, 0.6)', // Primary color for max weight borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Weight (lbs)' } } }, plugins: { legend: { display: false // Using custom legend below chart }, title: { display: true, text: 'Soldier Weight vs. Army Maximum Allowable Weight' } } } }); } function updateChart(currentWeight, maxWeight) { if (!chart) { initializeChart(); } // Ensure chart data is updated correctly chart.data.datasets[0].data = [currentWeight, null]; // Current weight as a single bar chart.data.datasets[1].data = [null, maxWeight]; // Max allowable weight as a single bar // Adjust y-axis scale if needed var maxVal = Math.max(currentWeight, maxWeight, 100); // Ensure a minimum scale chart.options.scales.y.max = maxVal * 1.1; // Add some padding chart.update(); } // Initial setup document.addEventListener('DOMContentLoaded', function() { resetCalculator(); // Set default values and clear results initializeChart(); // Initialize the chart // Trigger initial calculation on load if default values are set calculateArmyWeight(); });

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