Us Army Height and Weight Standards Calculator

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US Army Height and Weight Standards Calculator

Army Body Fat & Composition Calculator

Male Female
Enter height in inches (e.g., 5'8″ = 68 inches).
Enter weight in pounds (lbs).
Enter age in years.
Enter years of active service (for screening purposes).

Your Army Standards Assessment

This calculator estimates your compliance with US Army height and weight standards based on your gender, height, weight, age, and years of service. It compares your weight against maximum allowable weights for your height and gender, and considers body fat percentage standards for your age group and sex.
Male Max Weight Female Max Weight
Maximum Allowable Weight vs. Your Weight

What is the US Army Height and Weight Standards Calculator?

The US Army height and weight standards calculator is a specialized tool designed to help individuals determine if they meet the United States Army's physical requirements for enlistment or continued service. The Army has specific regulations regarding a soldier's height and weight to ensure physical readiness and combat effectiveness. This calculator simplifies the process of checking these standards, which are based on age, gender, height, and weight. It also incorporates the Army's body fat composition standards, providing a more comprehensive assessment. Understanding these requirements is a crucial first step for aspiring soldiers and a vital aspect of maintaining fitness for current service members.

Who Should Use It:

  • Individuals interested in enlisting in the US Army.
  • Current Army personnel undergoing periodic reviews or seeking to understand their compliance.
  • Recruiters and trainers who need a quick way to assess potential candidates.

Common Misconceptions:

  • Myth: The Army only cares about weight. Reality: Body fat percentage is a critical factor, especially for those who may appear overweight but are muscular.
  • Myth: Standards are the same for everyone. Reality: Standards vary significantly based on gender, age, and height.
  • Myth: The calculator provides a definitive pass/fail. Reality: While a good indicator, official measurements and tape tests conducted by Army personnel are the final determinants.

US Army Height and Weight Standards: Formula and Mathematical Explanation

The US Army's physical standards are primarily governed by Army Regulation 600-9 (The Army Body Composition Program). The calculation isn't a single simple formula but involves comparing an individual's metrics against established tables and criteria. Our calculator simplifies this by:

  1. Determining the maximum allowable weight for a given height and gender.
  2. Assessing whether the individual's current weight exceeds this maximum.
  3. Calculating the approximate body fat percentage based on height, weight, and gender, and comparing it to age-specific limits.

Maximum Allowable Weight Calculation

The Army provides detailed tables of maximum allowable weights for specific heights. For simplicity in the calculator, we use established approximations derived from these tables. The core idea is that for a given height, there's a weight range. If your weight falls within this range, you meet the basic weight standard.

Body Fat Percentage Calculation (Simplified)

Calculating precise body fat percentage requires specialized equipment (like calipers or bioelectrical impedance analysis). However, the Army also uses measurements of neck and waist circumference (for males) and neck, waist, and hip circumference (for females) to estimate body fat. For this calculator, we employ a common formula that estimates body fat percentage based on weight, height, gender, and age. A widely used approximation is based on density, often adjusted for gender and age.

A simplified estimation formula for body fat percentage (BF%) can be approximated:

For Males: BF% = 495 / (1.0324 - 0.19077 * log10(waist - neck) + 0.15457 * log10(height)) - 450 (Note: This is a common formula, but the Army uses specific circumference measurements. Our calculator uses a general estimation.)

For Females: BF% = 495 / (1.29579 - 0.13723 * log10(waist + hip - neck) + 0.05264 * log10(height)) - 450 (Note: Again, a general estimation. The calculator simplifies this further by focusing on weight and height comparison first, and then using general age-based body fat percentage standards.)

A more practical approach for calculators, aligning with the Army's standards, involves comparing the individual's weight to the maximum allowable weight for their height and then cross-referencing with age-group body fat limits.

Simplified Body Fat Standards Comparison (for illustrative purposes):

  • Males: Under 30 years old: Max 20% BF. 30-39 years old: Max 22% BF. 40+ years old: Max 24% BF.
  • Females: Under 30 years old: Max 30% BF. 30-39 years old: Max 32% BF. 40+ years old: Max 34% BF.

Important Note: The Army's actual body fat calculation uses specific circumference measurements (waist, neck, hips) and is more precise than estimations based solely on height and weight. This calculator provides an approximation.

Variables Table:

Variable Meaning Unit Typical Range
Gender Biological Sex Categorical (Male/Female) Male, Female
Height Individual's standing height Inches (in) 48 – 80 (approx. 4'0″ – 6'8″)
Weight Individual's body mass Pounds (lbs) 50 – 300+
Age Individual's age Years 17 – 60+
Years of Service Duration of active duty Years 0 – 40+
Max Allowable Weight The maximum weight permitted for a given height and gender Pounds (lbs) Varies significantly with height
Estimated Body Fat % Calculated body fat percentage Percent (%) 5 – 50+ (estimated)
Army Body Fat Standard Maximum allowable body fat % based on age and gender Percent (%) 20% – 34% (approx.)

Practical Examples (Real-World Use Cases)

Let's illustrate how the US Army height and weight standards calculator works with practical scenarios.

Example 1: Aspiring Male Recruit

Scenario: John is 22 years old, 5'10" (70 inches) tall, and weighs 190 lbs. He wants to enlist.

Inputs:

  • Gender: Male
  • Height: 70 inches
  • Weight: 190 lbs
  • Age: 22 years
  • Years of Service: N/A (for enlistment)

Calculator Output (Hypothetical):

  • Primary Result: Meets Standards (Potentially)
  • Max Allowable Weight: Approx. 199 lbs (for 70 inches height)
  • Estimated Body Fat %: Approx. 19%
  • Army Body Fat Standard: Max 20% (for males under 30)

Interpretation: John's weight (190 lbs) is below the maximum allowable weight for his height (approx. 199 lbs). His estimated body fat percentage (19%) is also within the acceptable limit for his age group (under 30). He likely meets the basic height and weight requirements. However, he would still need to pass an official tape test upon enlistment.

Example 2: Current Female Soldier Facing Scrutiny

Scenario: Sergeant Miller is 35 years old, 5'4″ (64 inches) tall, and weighs 155 lbs. She has been in the Army for 12 years and is undergoing her annual physical.

Inputs:

  • Gender: Female
  • Height: 64 inches
  • Weight: 155 lbs
  • Age: 35 years
  • Years of Service: 12 years

Calculator Output (Hypothetical):

  • Primary Result: Below Standards (Potential Concern)
  • Max Allowable Weight: Approx. 145 lbs (for 64 inches height)
  • Estimated Body Fat %: Approx. 33%
  • Army Body Fat Standard: Max 32% (for females aged 30-39)

Interpretation: Sergeant Miller's current weight (155 lbs) exceeds the maximum allowable weight for her height (approx. 145 lbs). Furthermore, her estimated body fat percentage (33%) is slightly above the Army's standard for her age group (max 32%). She would likely be flagged under the Army Body Composition Program and required to follow a strict weight loss and fitness plan, potentially involving circumference measurements. This example highlights why focusing solely on weight isn't enough and why body fat percentage is crucial.

How to Use This US Army Height and Weight Standards Calculator

Using the US Army height and weight standards calculator is straightforward. Follow these steps to get an assessment:

  1. Select Gender: Choose 'Male' or 'Female' from the dropdown menu.
  2. Enter Height: Input your height in inches. If you know your height in feet and inches (e.g., 5'8″), convert it to total inches (5 feet * 12 inches/foot + 8 inches = 68 inches).
  3. Enter Weight: Input your current weight in pounds (lbs). Ensure you are using an accurate scale.
  4. Enter Age: Provide your age in years.
  5. Enter Years of Service (Optional but Recommended): For current soldiers, inputting years of service can provide context, as regulations might have slight nuances or focus areas based on tenure.
  6. View Results: The calculator will automatically update in real-time.

How to Read Results:

  • Primary Result: This gives a quick overview – likely "Meets Standards" or "Below Standards." Note that "Meets Standards" is an estimation; official measurements are definitive.
  • Max Allowable Weight: This shows the upper limit for your height and gender according to Army tables.
  • Estimated Body Fat %: This is an approximation of your body fat.
  • Army Body Fat Standard: This indicates the maximum body fat percentage allowed for your age group and gender.

Decision-Making Guidance:

  • If the calculator indicates you meet the standards, congratulations! Continue maintaining a healthy lifestyle.
  • If the calculator shows you are below standards (either weight or body fat), take this as a serious call to action. Focus on a balanced diet and regular exercise. Consult with a doctor or nutritionist if needed.
  • Remember that the Army's standards are about readiness. Achieving and maintaining these standards is crucial for career progression and operational effectiveness.

Key Factors That Affect US Army Height and Weight Standards Results

Several factors influence whether an individual meets the US Army's height and weight standards. Understanding these can help in interpreting your results and planning your fitness journey:

  1. Gender: Men and women have different body compositions and thus different standards for weight and body fat percentage. For instance, women naturally carry a higher percentage of essential body fat.
  2. Height: The maximum allowable weight is directly correlated with height. Taller individuals can typically weigh more than shorter individuals while still being considered within standards.
  3. Age: Body composition and metabolism can change with age. The Army acknowledges this by setting slightly higher body fat percentage allowances for older soldiers.
  4. Muscle Mass vs. Fat Mass: This is perhaps the most critical factor. Soldiers with high muscle mass (e.g., athletes, weightlifters) might exceed the maximum weight for their height but still be well within body fat percentage limits. The Army's tape test is designed to account for this, differentiating between muscle and fat.
  5. Bone Density and Frame Size: While not explicitly a calculation factor in the basic standards, an individual's natural bone structure and frame size can influence their optimal weight. The Army aims for a healthy range that supports physical demands.
  6. Individual Metabolism and Genetics: Factors like metabolic rate and genetic predisposition play a role in how easily someone gains or loses weight and body fat.
  7. Nutritional Habits: Diet is paramount. Consistent healthy eating supports weight management and body composition goals required by the Army.
  8. Physical Fitness Regimen: Regular exercise, particularly a combination of cardiovascular training and strength training, is essential for maintaining lean body mass and managing body fat.

Frequently Asked Questions (FAQ)

Q1: What are the exact height and weight tables for the US Army?

A: The official tables are detailed in Army Regulation 600-9. They list maximum allowable weight in pounds for specific heights, categorized by gender. These tables are updated periodically.

Q2: Can I be over the maximum weight but still enlist?

A: Yes. If you are within 2 inches (5 cm) of the maximum allowable weight for your height, you may be eligible for a body fat composition assessment (tape test). If your body fat percentage is within the limits for your age and gender, you can still enlist or remain in service.

Q3: How is the body fat percentage officially calculated in the Army?

A: The Army uses a neck, waist, and hip (for females) circumference measurement method to estimate body fat percentage. Specific measurement techniques and calculations are outlined in AR 600-9. This calculator provides a general estimate only.

Q4: What happens if I fail the height and weight or body fat standard?

A: If you fail to meet the standards, you will be flagged under the Army Body Composition Program (ABCP). You will be given a specific period (usually 90 days) to meet the requirements through diet and exercise. Failure to do so can lead to administrative separation from the Army.

Q5: Does the calculator account for muscle mass?

A: This calculator provides a simplified estimation. While it compares your weight to maximums and estimates body fat, it cannot perfectly differentiate between muscle and fat like an official tape test or body composition analysis can. High muscle mass may lead to a "below standards" result here, even if you'd pass an official test.

Q6: Are the standards different for different Army jobs (MOS)?

A: The basic height and weight standards (AR 600-9) apply to all soldiers. However, certain physically demanding MOS (Military Occupational Specialties) may have additional, more stringent physical fitness requirements or may be more challenging to perform if you are at the upper limits of the height/weight standards.

Q7: How often are these standards updated?

A: Army regulations, including AR 600-9, are reviewed and can be updated periodically to reflect current needs, research, and best practices. It's important to refer to the latest version of the regulation for the most current information.

Q8: Is there a minimum height requirement for the Army?

A: Yes, there are minimum height requirements, typically around 4'10" (58 inches) for males and females, though waivers might be possible. This calculator assumes your height is within the generally acceptable range for calculation purposes.

Related Tools and Internal Resources

Disclaimer: This calculator is for informational purposes only and is based on general US Army standards. Official measurements and assessments by Army personnel are required for enlistment and continued service. Consult Army Regulation 600-9 for definitive guidelines.

// Army Standards Data (Simplified approximations based on AR 600-9 guidelines) // These are illustrative ranges and not exact official tables. var armyStandards = { male: { heights: [ { inches: 58, maxWeight: 126, bfLimit: [20, 22, 24] }, // 4'10" { inches: 59, maxWeight: 129, bfLimit: [20, 22, 24] }, { inches: 60, maxWeight: 133, bfLimit: [20, 22, 24] }, // 5'0″ { inches: 61, maxWeight: 137, bfLimit: [20, 22, 24] }, { inches: 62, maxWeight: 141, bfLimit: [20, 22, 24] }, { inches: 63, maxWeight: 145, bfLimit: [20, 22, 24] }, // 5'3″ { inches: 64, maxWeight: 149, bfLimit: [20, 22, 24] }, { inches: 65, maxWeight: 153, bfLimit: [20, 22, 24] }, { inches: 66, maxWeight: 157, bfLimit: [20, 22, 24] }, // 5'6″ { inches: 67, maxWeight: 161, bfLimit: [20, 22, 24] }, { inches: 68, maxWeight: 165, bfLimit: [20, 22, 24] }, { inches: 69, maxWeight: 169, bfLimit: [20, 22, 24] }, // 5'9″ { inches: 70, maxWeight: 174, bfLimit: [20, 22, 24] }, { inches: 71, maxWeight: 178, bfLimit: [20, 22, 24] }, { inches: 72, maxWeight: 182, bfLimit: [20, 22, 24] }, // 6'0″ { inches: 73, maxWeight: 187, bfLimit: [20, 22, 24] }, { inches: 74, maxWeight: 191, bfLimit: [20, 22, 24] }, { inches: 75, maxWeight: 196, bfLimit: [20, 22, 24] }, // 6'3″ { inches: 76, maxWeight: 201, bfLimit: [20, 22, 24] }, { inches: 77, maxWeight: 206, bfLimit: [20, 22, 24] }, { inches: 78, maxWeight: 211, bfLimit: [20, 22, 24] }, // 6'6″ { inches: 79, maxWeight: 216, bfLimit: [20, 22, 24] }, { inches: 80, maxWeight: 221, bfLimit: [20, 22, 24] } // 6'8″ ] }, female: { heights: [ { inches: 58, maxWeight: 112, bfLimit: [30, 32, 34] }, // 4'10" { inches: 59, maxWeight: 115, bfLimit: [30, 32, 34] }, { inches: 60, maxWeight: 118, bfLimit: [30, 32, 34] }, // 5'0″ { inches: 61, maxWeight: 122, bfLimit: [30, 32, 34] }, { inches: 62, maxWeight: 126, bfLimit: [30, 32, 34] }, { inches: 63, maxWeight: 130, bfLimit: [30, 32, 34] }, // 5'3″ { inches: 64, maxWeight: 134, bfLimit: [30, 32, 34] }, { inches: 65, maxWeight: 138, bfLimit: [30, 32, 34] }, { inches: 66, maxWeight: 142, bfLimit: [30, 32, 34] }, // 5'6″ { inches: 67, maxWeight: 146, bfLimit: [30, 32, 34] }, { inches: 68, maxWeight: 150, bfLimit: [30, 32, 34] }, { inches: 69, maxWeight: 154, bfLimit: [30, 32, 34] }, // 5'9″ { inches: 70, maxWeight: 158, bfLimit: [30, 32, 34] }, { inches: 71, maxWeight: 163, bfLimit: [30, 32, 34] }, { inches: 72, maxWeight: 167, bfLimit: [30, 32, 34] }, // 6'0″ { inches: 73, maxWeight: 171, bfLimit: [30, 32, 34] }, { inches: 74, maxWeight: 176, bfLimit: [30, 32, 34] }, { inches: 75, maxWeight: 180, bfLimit: [30, 32, 34] }, // 6'3″ { inches: 76, maxWeight: 185, bfLimit: [30, 32, 34] }, { inches: 77, maxWeight: 190, bfLimit: [30, 32, 34] }, { inches: 78, maxWeight: 194, bfLimit: [30, 32, 34] }, // 6'6″ { inches: 79, maxWeight: 199, bfLimit: [30, 32, 34] }, { inches: 80, maxWeight: 204, bfLimit: [30, 32, 34] } // 6'8″ ] } }; var chartInstance = null; // To hold the chart instance function getArmyBFStandard(gender, age) { var ageGroup; if (age = 30 && age ageGroup) { return bfLimits[ageGroup]; } return null; // Should not happen with defined data } function getMaxWeightForHeight(gender, heightInches) { var standards = armyStandards[gender]; if (!standards) return null; // Find the closest height entry, prioritizing exact match or the one below var maxHeight = -1; var maxWeight = -1; for (var i = 0; i < standards.heights.length; i++) { if (standards.heights[i].inches maxHeight) { maxHeight = standards.heights[i].inches; maxWeight = standards.heights[i].maxWeight; } } } // If height is below the smallest defined height, return the smallest max weight if (maxHeight === -1 && standards.heights.length > 0) { return standards.heights[0].maxWeight; } return maxWeight === -1 ? null : maxWeight; } // Basic estimation of Body Fat % – This is a simplified proxy. // Real Army calculation uses circumferences. function estimateBodyFat(gender, heightInches, weightLbs, age) { // Very simplified estimation logic. Real calculation is complex. // This function mainly provides a value for comparison against limits. // For practical purposes, we rely more on weight vs max weight and standard limits. // A common formula: (Weight / (Height^2)) * Constant. Adjust for gender. // Let's use a simpler proxy: Assume a "healthy" weight range is roughly 15-25% BF for males, 25-35% for females. // We will primarily use the MAX weight check and the AGE-BASED BF LIMIT for assessment. // This function will return a placeholder value or a calculated value if a simplified formula is added. // For now, let's return a value that scales with deviation from a "ideal" weight. var maxWeight = getMaxWeightForHeight(gender, heightInches); if (!maxWeight || weightLbs > maxWeight * 1.3) return 40; // High estimate if significantly overweight if (!maxWeight || weightLbs = 30) estimatedBF += 2; if (age >= 40) estimatedBF += 2; // Ensure within reasonable bounds return Math.max(5, Math.min(estimatedBF, 50)); } function calculateArmyStandards() { var gender = document.getElementById('gender').value; var heightInches = parseFloat(document.getElementById('heightInches').value); var weightLbs = parseFloat(document.getElementById('weightLbs').value); var age = parseInt(document.getElementById('age').value); var serviceYears = parseInt(document.getElementById('serviceYears').value); var heightError = document.getElementById('heightError'); var weightError = document.getElementById('weightError'); var ageError = document.getElementById('ageError'); var serviceYearsError = document.getElementById('serviceYearsError'); var resultsContainer = document.getElementById('resultsContainer'); var primaryResult = document.getElementById('primaryResult'); var measurementStatus = document.getElementById('measurementStatus'); var maxWeightDisplay = document.getElementById('maxWeight'); var bodyFatPercentageDisplay = document.getElementById('bodyFatPercentage'); // Reset errors heightError.textContent = "; weightError.textContent = "; ageError.textContent = "; serviceYearsError.textContent = "; var isValid = true; // — Input Validation — if (isNaN(heightInches) || heightInches 96) { // e.g., taller than 8 feet heightError.textContent = 'Height seems unusually large.'; isValid = false; } if (isNaN(weightLbs) || weightLbs 600) { // Arbitrary high limit weightError.textContent = 'Weight seems unusually high.'; isValid = false; } if (isNaN(age) || age 100) { // Arbitrary high limit ageError.textContent = 'Age seems unusually high.'; isValid = false; } if (isNaN(serviceYears) || serviceYears 60) { // Arbitrary high limit serviceYearsError.textContent = 'Years of service seem unusually high.'; isValid = false; } if (!isValid) { resultsContainer.style.display = 'none'; return; } // — Calculations — var maxWeight = getMaxWeightForHeight(gender, heightInches); var armyBFStandard = getArmyBFStandard(gender, age); var estimatedBF = estimateBodyFat(gender, heightInches, weightLbs, age); // Simplified estimation var weightStatus = "; var bfStatus = "; var overallStatus = "; // Check Weight Standard if (maxWeight === null) { weightStatus = 'Cannot determine max weight for this height.'; overallStatus = 'Undetermined'; } else { weightStatus = 'Max Allowable Weight: ' + maxWeight + ' lbs'; if (weightLbs > maxWeight) { weightStatus += ' (Exceeded)'; } else { weightStatus += ' (Within Limit)'; } } // Check Body Fat Standard if (armyBFStandard === null) { bfStatus = 'Cannot determine BF standard for this age/gender.'; overallStatus = 'Undetermined'; } else { bfStatus = 'Army BF Standard: Max ' + armyBFStandard + '%'; if (estimatedBF > armyBFStandard) { bfStatus += ' (Estimated Exceeded)'; } else { bfStatus += ' (Estimated Within Limit)'; } } // Determine Overall Status // Logic: Must meet BOTH weight and body fat estimation criteria to be "Meets Standards". // If weight is exceeded, it's usually a flag regardless of estimated BF. // If weight is met, but estimated BF is exceeded, it's also a flag. if (maxWeight !== null && weightLbs <= maxWeight && armyBFStandard !== null && estimatedBF <= armyBFStandard) { overallStatus = 'Meets Standards'; primaryResult.style.color = '#155724'; primaryResult.style.backgroundColor = '#d4edda'; primaryResult.style.borderColor = '#c3e6cb'; } else if (maxWeight !== null && weightLbs armyBFStandard) { overallStatus = 'Meets Weight, Potential BF Concern'; primaryResult.style.color = '#856404'; primaryResult.style.backgroundColor = '#fff3cd'; primaryResult.style.borderColor = '#ffeeba'; } else if (maxWeight !== null && weightLbs > maxWeight && armyBFStandard !== null && estimatedBF <= armyBFStandard) { overallStatus = 'Exceeds Weight, Meets Est. BF'; primaryResult.style.color = '#856404'; primaryResult.style.backgroundColor = '#fff3cd'; primaryResult.style.borderColor = '#ffeeba'; } else { overallStatus = 'Below Standards'; primaryResult.style.color = '#721c24'; primaryResult.style.backgroundColor = '#f8d7da'; primaryResult.style.borderColor = '#f5c6cb'; } // Display Results primaryResult.textContent = overallStatus; measurementStatus.innerHTML = '' + weightStatus + ''; bodyFatPercentageDisplay.innerHTML = '' + bfStatus + ''; maxWeightDisplay.innerHTML = 'Max Weight for Height ('+ heightInches + '"): ' + (maxWeight !== null ? maxWeight + ' lbs' : 'N/A') + ''; resultsContainer.style.display = 'block'; // Update Chart updateWeightChart(gender, heightInches, weightLbs, maxWeight); } function updateWeightChart(gender, heightInches, currentWeight, maxWeightForHeight) { var ctx = document.getElementById('weightChart').getContext('2d'); // Clear previous chart if it exists if (chartInstance) { chartInstance.destroy(); } var maleMaxWeight = getMaxWeightForHeight('male', heightInches); var femaleMaxWeight = getMaxWeightForHeight('female', heightInches); // Define data points for the chart // For simplicity, let's show max weights for male/female at the entered height // and the current weight. var labels = ['Male Max Weight', 'Female Max Weight', 'Your Weight']; var dataPoints = []; if (maleMaxWeight !== null) dataPoints.push(maleMaxWeight); else dataPoints.push(0); if (femaleMaxWeight !== null) dataPoints.push(femaleMaxWeight); else dataPoints.push(0); if (currentWeight) dataPoints.push(currentWeight); else dataPoints.push(0); // Determine colors based on selected gender for emphasis var backgroundColors = ['rgba(31, 119, 180, 0.6)', 'rgba(255, 127, 14, 0.6)', 'rgba(40, 167, 69, 0.6)']; // Blue, Orange, Green if (gender === 'male' && dataPoints.length > 2) { backgroundColors[2] = 'rgba(31, 119, 180, 0.8)'; // Highlight male line if selected } else if (gender === 'female' && dataPoints.length > 2) { backgroundColors[2] = 'rgba(255, 127, 14, 0.8)'; // Highlight female line if selected } chartInstance = new Chart(ctx, { type: 'bar', data: { labels: labels, datasets: [{ label: 'Weight (lbs)', data: dataPoints, backgroundColor: backgroundColors, borderColor: [ 'rgba(31, 119, 180, 1)', 'rgba(255, 127, 14, 1)', 'rgba(40, 167, 69, 1)' ], borderWidth: 1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Weight (lbs)' } } }, plugins: { legend: { display: false // Use custom legend }, title: { display: true, text: 'Weight Comparison at ' + heightInches + '" Height' } } } }); } function resetCalculator() { document.getElementById('gender').value = 'male'; document.getElementById('heightInches').value = '70'; // ~5'10" document.getElementById('weightLbs').value = '180'; // Reasonable weight document.getElementById('age').value = '25'; document.getElementById('serviceYears').value = '3'; // Clear errors document.getElementById('heightError').textContent = "; document.getElementById('weightError').textContent = "; document.getElementById('ageError').textContent = "; document.getElementById('serviceYearsError').textContent = "; // Clear results document.getElementById('resultsContainer').style.display = 'none'; // Clear chart if (chartInstance) { chartInstance.destroy(); chartInstance = null; } // Re-initialize chart with default values updateWeightChart('male', 70, 180, getMaxWeightForHeight('male', 70)); } function copyResults() { var gender = document.getElementById('gender').value; var heightInches = parseFloat(document.getElementById('heightInches').value); var weightLbs = parseFloat(document.getElementById('weightLbs').value); var age = parseInt(document.getElementById('age').value); var serviceYears = parseInt(document.getElementById('serviceYears').value); var maxWeight = getMaxWeightForHeight(gender, heightInches); var armyBFStandard = getArmyBFStandard(gender, age); var estimatedBF = estimateBodyFat(gender, heightInches, weightLbs, age); var weightStatus = "; if (maxWeight !== null) { weightStatus = weightLbs > maxWeight ? 'Exceeded' : 'Within Limit'; } else { weightStatus = 'N/A'; } var bfStatus = "; if (armyBFStandard !== null) { bfStatus = estimatedBF > armyBFStandard ? 'Estimated Exceeded' : 'Estimated Within Limit'; } else { bfStatus = 'N/A'; } var overallStatus = document.getElementById('primaryResult').textContent; var resultsText = "— US Army Height & Weight Standards Assessment —\n\n"; resultsText += "Input:\n"; resultsText += "- Gender: " + gender.charAt(0).toUpperCase() + gender.slice(1) + "\n"; resultsText += "- Height: " + heightInches + " inches\n"; resultsText += "- Weight: " + weightLbs + " lbs\n"; resultsText += "- Age: " + age + " years\n"; resultsText += "- Years of Service: " + (isNaN(serviceYears) ? "N/A" : serviceYears) + "\n\n"; resultsText += "Results:\n"; resultsText += "- Overall Status: " + overallStatus + "\n"; resultsText += "- Max Allowable Weight (" + heightInches + "\" " + gender + "): " + (maxWeight !== null ? maxWeight + " lbs (" + weightStatus + ")" : "N/A") + "\n"; resultsText += "- Estimated Body Fat %: " + estimatedBF.toFixed(1) + "%\n"; resultsText += "- Army Body Fat Standard (" + age + " yr old " + gender + "): Max " + (armyBFStandard !== null ? armyBFStandard + "% (" + bfStatus + ")" : "N/A") + "\n\n"; resultsText += "Key Assumptions:\n"; resultsText += "- Body fat estimation is simplified and does not use official circumference measurements.\n"; resultsText += "- Maximum weights are based on generalized Army tables and may vary slightly.\n"; navigator.clipboard.writeText(resultsText).then(function() { // Optionally show a confirmation message var originalText = document.getElementById('copyButton').textContent; document.getElementById('copyButton').textContent = 'Copied!'; setTimeout(function(){ document.getElementById('copyButton').textContent = originalText; }, 1500); }, function() { alert('Failed to copy results. Please copy manually.'); }); } function toggleFaq(element) { var content = element.nextElementSibling; if (content.style.display === "block") { content.style.display = "none"; } else { content.style.display = "block"; } } // Initial calculation and chart draw on page load window.onload = function() { resetCalculator(); // Sets defaults and triggers calculation // Ensure chart is drawn even if results container is initially hidden var gender = document.getElementById('gender').value; var heightInches = parseFloat(document.getElementById('heightInches').value); var weightLbs = parseFloat(document.getElementById('weightLbs').value); updateWeightChart(gender, heightInches, weightLbs, getMaxWeightForHeight(gender, heightInches)); };

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