Army Female Weight Calculator

Army Female Weight Calculator: Standards & Analysis :root { –primary-color: #004a99; –secondary-color: #f8f9fa; –success-color: #28a745; –text-color: #333; –border-color: #ddd; –shadow-color: rgba(0, 0, 0, 0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: var(–text-color); background-color: var(–secondary-color); margin: 0; padding: 0; display: flex; flex-direction: column; align-items: center; } .container { width: 90%; max-width: 1000px; margin: 20px auto; padding: 25px; background-color: #fff; border-radius: 8px; box-shadow: 0 4px 15px var(–shadow-color); } header { background-color: var(–primary-color); color: white; padding: 15px 0; text-align: center; width: 100%; box-shadow: 0 2px 10px var(–shadow-color); } header h1 { margin: 0; font-size: 2.2em; font-weight: 600; } main { width: 100%; } h2, h3 { color: var(–primary-color); margin-top: 25px; margin-bottom: 15px; } .calculator-wrapper { background-color: #fdfdfd; padding: 20px; border-radius: 6px; border: 1px solid var(–border-color); margin-bottom: 30px; } .loan-calc-container { display: flex; flex-direction: column; gap: 15px; } .input-group { display: flex; flex-direction: column; gap: 8px; } .input-group label { font-weight: bold; font-size: 1.05em; color: var(–primary-color); } .input-group input[type="number"], .input-group input[type="text"], .input-group select { padding: 10px 12px; border: 1px solid var(–border-color); border-radius: 4px; font-size: 1em; width: calc(100% – 24px); /* Adjust for padding */ } .input-group input[type="number"]:focus, .input-group input[type="text"]:focus, .input-group select:focus { outline: none; border-color: var(–primary-color); box-shadow: 0 0 0 2px rgba(0, 74, 153, 0.2); } .helper-text { font-size: 0.85em; color: #666; margin-top: -5px; /* Adjust spacing */ } .error-message { color: #dc3545; font-size: 0.85em; font-weight: bold; margin-top: 5px; min-height: 1.2em; /* Reserve space */ } .button-group { display: flex; gap: 10px; margin-top: 20px; } .btn { padding: 12px 20px; border: none; border-radius: 5px; font-size: 1em; font-weight: bold; cursor: pointer; transition: background-color 0.3s ease, transform 0.2s ease; display: inline-block; } .btn-primary { background-color: var(–primary-color); color: white; } .btn-primary:hover { background-color: #003b7d; transform: translateY(-2px); } .btn-secondary { background-color: #6c757d; color: white; } .btn-secondary:hover { background-color: #5a6268; transform: translateY(-2px); } .btn-success { background-color: var(–success-color); color: white; } .btn-success:hover { background-color: #218838; transform: translateY(-2px); } .result-wrapper { margin-top: 30px; padding: 20px; background-color: var(–primary-color); color: white; border-radius: 6px; text-align: center; box-shadow: 0 2px 8px rgba(0, 74, 153, 0.3); } #primary-result { font-size: 2.5em; font-weight: bold; margin-bottom: 10px; display: block; color: #fff; } .result-label { font-size: 1.1em; font-weight: bold; display: block; margin-bottom: 15px; } .intermediate-results { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; margin-top: 15px; padding-top: 15px; border-top: 1px solid rgba(255, 255, 255, 0.3); } .intermediate-value { text-align: center; background-color: rgba(255, 255, 255, 0.15); padding: 10px 15px; border-radius: 4px; } .intermediate-value strong { font-size: 1.5em; display: block; color: #fff; } .intermediate-value span { font-size: 0.9em; opacity: 0.9; display: block; } .formula-explanation { margin-top: 20px; font-size: 0.95em; color: #e0e0e0; text-align: left; } table { width: 100%; border-collapse: collapse; margin-top: 20px; margin-bottom: 20px; } th, td { padding: 10px; border: 1px solid var(–border-color); text-align: left; } th { background-color: var(–primary-color); color: white; font-weight: bold; } td { background-color: #f9f9f9; } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; caption-side: top; text-align: left; } canvas { max-width: 100%; height: auto; display: block; margin: 20px auto; background-color: #fff; border-radius: 4px; box-shadow: 0 2px 8px var(–shadow-color); } .article-content { margin-top: 30px; background-color: #fff; padding: 25px; border-radius: 8px; box-shadow: 0 4px 15px var(–shadow-color); } .article-content h2 { border-bottom: 2px solid var(–primary-color); padding-bottom: 5px; } .article-content p { margin-bottom: 15px; } .article-content ul, .article-content ol { margin-left: 20px; margin-bottom: 15px; } .article-content li { margin-bottom: 8px; } .variable-table td { background-color: #fff; } .variable-table th { background-color: #e0e0e0; color: #333; } .faq-item { margin-bottom: 15px; padding: 10px; background-color: #f8f9fa; border-left: 3px solid var(–primary-color); border-radius: 4px; } .faq-item strong { display: block; color: var(–primary-color); margin-bottom: 5px; } .internal-links-section ul { list-style: none; padding: 0; } .internal-links-section li { margin-bottom: 10px; } .internal-links-section a { color: var(–primary-color); text-decoration: none; font-weight: bold; } .internal-links-section a:hover { text-decoration: underline; } .internal-links-section p { font-style: italic; color: #555; font-size: 0.9em; } footer { text-align: center; padding: 20px; margin-top: 30px; width: 100%; background-color: var(–primary-color); color: white; font-size: 0.9em; } @media (min-width: 768px) { .container { margin-top: 30px; } }

Army Female Weight Calculator

Assessing US Army Weight Standards for Women

Army Female Weight Standards Calculator

Enter your details to see how you measure against current US Army female weight standards.

Enter your height in whole inches (e.g., 5'4″ = 64 inches).
Enter your estimated body fat percentage (e.g., 25%).
Enter your age in whole years.
Active Duty National Guard/Reserve Select your current service status.
Maximum Allowable Weight:
Lean Body Mass (lbs)
Max Allowable Fat (lbs)
Current BMI

Formula Used:

Lean Body Mass (LBM) = Current Weight (lbs) * (1 – (Body Fat % / 100))

Maximum Allowable Weight = LBM / (1 – (Max Allowed Body Fat % / 100))

The maximum allowed body fat percentage varies by age and service status.

BMI = (Weight in lbs / (Height in inches * Height in inches)) * 703

Weight Standards Table

Chart showing your calculated weight against maximum allowable weight for your age group.

Comparison Details

Metric Your Value Army Standard (Max Allowable)

What is the Army Female Weight Calculator?

The Army Female Weight Calculator is a specialized tool designed to help women in or aspiring to join the U.S. Army determine if they meet the stringent weight and body fat standards set by the military. Unlike general health calculators, this tool specifically references Department of the Army (DA) Pamphlet 600-9, also known as the Army Body Composition Program (ABCP). It takes into account factors such as height, age, body fat percentage, and soldier status to provide a precise assessment against regulatory requirements.

Who should use it:

  • Prospective recruits considering a career in the Army.
  • Current female soldiers preparing for or undergoing periodic body composition assessments.
  • Individuals seeking to understand the specific physical fitness benchmarks for women in the U.S. Army.
  • Fitness professionals or recruiters who need to quickly reference Army weight standards.

Common misconceptions:

  • Myth: The Army only cares about weight. Fact: The Army heavily emphasizes body fat percentage, recognizing that muscle mass can weigh more than fat.
  • Myth: Standards are the same for all ages. Fact: The maximum allowable body fat percentage typically increases with age.
  • Myth: BMI is the sole determinant. Fact: While BMI is considered, body fat percentage is the primary metric for meeting standards, especially when approaching weight limits.
  • Myth: The calculator predicts enlistment eligibility. Fact: The calculator assesses weight standards only; overall enlistment depends on many other factors.

Army Female Weight Calculator Formula and Mathematical Explanation

The core of the Army Female Weight Calculator relies on calculating the maximum allowable weight based on a soldier's height, age, and the Army's prescribed maximum body fat percentages. The process involves understanding lean body mass (LBM) and the permissible fat mass.

Step-by-step derivation:

  1. Calculate Lean Body Mass (LBM): This is the weight of everything in the body except fat. The formula is: LBM (lbs) = Current Weight (lbs) * (1 - (Body Fat % / 100)) To use this calculator, we first estimate the *current total weight* using the provided height and body fat. This is often done by solving for weight in the LBM formula if a specific LBM is known, or more practically, by using height and age to establish a baseline weight range and then calculating LBM. For this calculator's direct output, we assume the user provides their *current* weight or it's inferred. However, the Army's calculation starts from height and body fat. A more direct approach for the calculator is to use height to get a Base Weight (BW) and then calculate LBM from there. Given the inputs, we'll focus on calculating the *maximum allowable weight*.
  2. Determine Maximum Allowed Body Fat %: The Army sets maximum allowable body fat percentages based on age. For women:
    • Age 17-20: 28%
    • Age 21-25: 30%
    • Age 26-30: 32%
    • Age 31-35: 34%
    • Age 36-40: 36%
    • Age 41+: 38%
    (Note: These percentages can be subject to change based on Army Regulation updates. Active Duty might have slightly different thresholds or enforcement compared to Guard/Reserve, though the core DA PAM 600-9 percentages are standard.)
  3. Calculate Maximum Allowable Weight: Using the determined maximum body fat percentage and the soldier's height, the maximum allowable weight is calculated. If we calculate LBM first (from estimated current weight), the formula becomes: Maximum Allowable Weight (lbs) = LBM (lbs) / (1 - (Maximum Allowed Body Fat % / 100)) The calculator uses height and body fat percentage to work backward or determine compliance. A more direct calculation from height (using height-based weight tables) and then applying the body fat percentage is often how it's done. The calculator provided uses inputs like height and body fat percentage to determine the maximum allowable weight based on Army standards.
  4. Calculate Body Mass Index (BMI): BMI is calculated using the *current estimated weight* (derived from height and body fat, or assumed for calculation) and height. BMI = (Weight in lbs / (Height in inches * Height in inches)) * 703 This provides context but is secondary to the body fat percentage standard.

Variable Explanations:

Variable Meaning Unit Typical Range/Values
Height Soldier's standing height. Inches (in) 58 – 76 inches (4'10" – 6'4″)
Body Fat Percentage Percentage of total body weight that is fat mass. % 10% – 40% (for calculation context)
Age Soldier's age in years. Years 17+
Soldier Type Service status (Active Duty, Guard/Reserve). Influences standards slightly or policy application. Categorical Active Duty, National Guard/Reserve
Lean Body Mass (LBM) Total body weight minus fat mass. Pounds (lbs) Varies based on individual.
Maximum Allowable Weight The highest weight a soldier can be while meeting body fat standards for their height and age. Pounds (lbs) Varies based on height, age, gender.
Maximum Allowed Body Fat % The maximum permissible body fat percentage according to Army regulations for a given age group. % 28% – 38% (for females by age)
Current BMI Body Mass Index calculated from current estimated weight and height. kg/m² or unitless (calculated) Varies; Army standards often look for BMI under 27.5, but body fat is primary.

Practical Examples (Real-World Use Cases)

Example 1: New Recruit Assessment

Scenario: A 19-year-old female aspiring to join the Army has a height of 5'6″ (66 inches) and estimates her body fat percentage at 29%. She is applying for Active Duty.

Inputs:

  • Height: 66 inches
  • Body Fat Percentage: 29%
  • Age: 19
  • Soldier Type: Active Duty

Calculation Steps (Simplified for calculator logic):

  1. Maximum Allowed Body Fat % for age 19 (17-20 bracket) = 28%.
  2. Using Army height/weight tables for 66 inches, the standard weight range might be around 110-145 lbs. Let's assume a reference weight of 130 lbs for calculation context.
  3. LBM = 130 lbs * (1 – (29% / 100)) = 130 * (1 – 0.29) = 130 * 0.71 = 92.3 lbs.
  4. Maximum Allowable Weight = 92.3 lbs / (1 – (28% / 100)) = 92.3 / (1 – 0.28) = 92.3 / 0.72 = 128.2 lbs.
  5. Calculated BMI (using 130 lbs): (130 / (66*66)) * 703 = (130 / 4356) * 703 ≈ 21.0
  6. Results:

    • Maximum Allowable Weight: ~128 lbs
    • Current Estimated LBM: ~92 lbs
    • Current Estimated BMI: ~21.0
    • Army Standard (Max Allowable Weight): 128 lbs

    Interpretation: The recruit's estimated body fat (29%) is slightly above the Army's maximum standard of 28% for her age group. Although her BMI is well within range, she needs to reduce her body fat to meet the specific criterion. The calculator would show her current state is non-compliant based on the 28% threshold.

    Example 2: Current Soldier Compliance Check

    Scenario: A 32-year-old female Sergeant on National Guard duty has a height of 5'2″ (62 inches). Her last measurement showed her body fat at 33%, and her weight was 140 lbs.

    Inputs:

    • Height: 62 inches
    • Body Fat Percentage: 33%
    • Age: 32
    • Soldier Type: National Guard/Reserve

    Calculation Steps:

    1. Maximum Allowed Body Fat % for age 32 (31-35 bracket) = 34%.
    2. LBM = 140 lbs * (1 – (33% / 100)) = 140 * (1 – 0.33) = 140 * 0.67 = 93.8 lbs.
    3. Maximum Allowable Weight = 93.8 lbs / (1 – (34% / 100)) = 93.8 / (1 – 0.34) = 93.8 / 0.66 = 142.1 lbs.
    4. Calculated BMI (using 140 lbs): (140 / (62*62)) * 703 = (140 / 3844) * 703 ≈ 25.7

    Results:

    • Maximum Allowable Weight: ~142 lbs
    • Current Estimated LBM: ~94 lbs
    • Current Estimated BMI: ~25.7
    • Army Standard (Max Allowable Weight): 142 lbs

    Interpretation: The Sergeant's current body fat percentage (33%) is below the Army's maximum standard of 34% for her age group. Her weight (140 lbs) is also below the calculated maximum allowable weight (approx. 142 lbs) for her height and age group meeting the 34% body fat standard. Her BMI is also within acceptable limits. She is currently compliant with the Army Body Composition Program standards.

    How to Use This Army Female Weight Calculator

    Using the Army Female Weight Calculator is straightforward. Follow these steps to get an accurate assessment:

    1. Step 1: Gather Your Measurements. You will need your precise height (in inches), your current estimated body fat percentage, and your age. If you don't know your body fat percentage, you can get it measured using methods like calipers, bioelectrical impedance analysis (BIA) scales, or hydrostatic weighing. Recruiters and medical personnel can provide accurate measurements.
    2. Step 2: Input Your Data. Enter your height in inches into the 'Height' field. Input your body fat percentage into the 'Body Fat Percentage' field. Enter your age in years into the 'Age' field. Select your Soldier Type (Active Duty or National Guard/Reserve) from the dropdown.
    3. Step 3: Click 'Calculate'. Once all fields are populated, click the 'Calculate' button.
    4. Step 4: Review Your Results. The calculator will display:
      • Primary Result: The Maximum Allowable Weight for a female soldier of your height and age, based on Army standards.
      • Intermediate Values: Your estimated Lean Body Mass (LBM) in pounds, the maximum allowable fat weight in pounds, and your current Body Mass Index (BMI).
      • Comparison Table: A clear table showing your metrics against the Army's standards.
      • Chart: A visual representation comparing your calculated weight status against Army limits.
    5. Step 5: Understand the Interpretation. The results indicate whether you are currently meeting the Army's body composition standards. If you are over the maximum allowable weight for your height and age group, or if your body fat percentage exceeds the limit, you will need to take corrective action.
    6. Step 6: Use the 'Reset' and 'Copy Results' Buttons. The 'Reset' button clears all fields, allowing you to start over. The 'Copy Results' button copies key information to your clipboard for easy sharing or documentation.

    Decision-making guidance: If the calculator shows you are compliant, continue maintaining your current fitness levels. If it indicates non-compliance, use the results as motivation to create a fitness plan focused on reducing body fat while preserving lean muscle mass. Consult with a recruiter or military fitness expert for personalized advice.

    Key Factors That Affect Army Female Weight Calculator Results

    Several factors influence the calculations and the interpretation of results from the Army Female Weight Calculator. Understanding these is crucial for accurate assessment and goal setting:

    1. Height: This is a fundamental input. Taller individuals generally have higher weight allowances due to larger frame size and skeletal structure. The Army uses specific height-weight charts derived from statistical data.
    2. Age: As seen in the standards, the maximum allowable body fat percentage typically increases with age. This reflects natural physiological changes that occur in the body over time. The calculator categorizes age groups to apply the correct standard.
    3. Body Fat Percentage: This is the most critical metric. The Army prioritizes body fat over sheer weight, recognizing that soldiers need to be functionally fit. Muscle is denser than fat, so a muscular individual might weigh more but have lower body fat and still be compliant.
    4. Lean Body Mass (LBM): While not always directly input, LBM is calculated and is key. A soldier with high LBM can weigh more overall and still be within standards if their fat percentage is low enough. Conversely, low LBM might mean a lower maximum allowable weight.
    5. Service Status (Active Duty vs. Guard/Reserve): While the fundamental standards (DA PAM 600-9) apply broadly, nuances in policy implementation, re-enlistment standards, or specific unit policies might exist. This calculator uses the general distinction provided by the user.
    6. Measurement Accuracy: The accuracy of the input data, especially body fat percentage measurement, directly impacts the result. Inconsistent or inaccurate measurements can lead to a false sense of compliance or unnecessary concern. Professional measurements are always recommended for official assessments.
    7. Physiological Differences: Individual metabolism, genetics, and hormonal factors play a role in body composition, affecting how easily one gains or loses fat and muscle mass. While the calculator uses standard formulas, individual responses can vary.
    8. Training and Nutrition: Consistent physical training focusing on both cardiovascular health and strength, coupled with a balanced diet, are essential for meeting and maintaining Army body composition standards. These external factors influence the inputs (like body fat %) used in the calculator.

    Frequently Asked Questions (FAQ)

    Q1: What is the maximum body fat percentage for women in the Army?

    A: For women, the maximum allowable body fat percentage varies by age group: 28% (ages 17-20), 30% (ages 21-25), 32% (ages 26-30), 34% (ages 31-35), 36% (ages 36-40), and 38% (ages 41 and older). These are outlined in DA Pamphlet 600-9.

    Q2: Does the Army use BMI or Body Fat Percentage?

    A: The Army uses both, but body fat percentage is the primary standard. Soldiers who exceed the maximum allowable weight for their height may be granted a conditional pass if their body fat percentage meets the standard. However, exceeding the body fat standard is a failure, regardless of weight or BMI.

    Q3: How often are Army body composition standards assessed?

    A: Soldiers are typically assessed annually, but may be screened more frequently if they are flagged for potential non-compliance, are overweight, or are returning from specific training or assignments.

    Q4: What happens if I don't meet the Army weight standards?

    A: Soldiers who do not meet the standards are typically enrolled in the Army Body Composition Program (ABCP). This involves counseling, monitoring, and a mandatory fitness plan. Failure to meet standards within a specified timeframe can impact career progression, promotions, and potentially lead to separation from service.

    Q5: Can I use this calculator if I'm not yet in the Army?

    A: Yes. This Army Female Weight Calculator is ideal for potential recruits to gauge their fitness level against military standards before enlisting. It helps set realistic goals.

    Q6: Are the standards different for different branches of the military?

    A: Yes, each branch of the U.S. military (Army, Navy, Air Force, Marines, Coast Guard) has its own specific body composition standards, regulations, and assessment methods.

    Q7: How accurate are body fat percentage measurements?

    A: Accuracy can vary depending on the method used (e.g., calipers, BIA scale, DEXA scan). Official Army measurements are taken using specific protocols. For estimation purposes, multiple measurements or professional assessment provide the best results.

    Q8: Does muscle weigh more than fat?

    A: Yes, muscle is denser than fat. This is why the Army focuses heavily on body fat percentage. A soldier who trains regularly might have a higher weight due to muscle mass but still be well within body fat limits and considered fit.

© 2023 Your Website Name. All rights reserved. This calculator provides estimates based on publicly available Army regulations and should not be considered official military guidance.

var chartInstance = null; // Global variable for chart instance function calculateWeight() { var heightInches = parseFloat(document.getElementById("heightInches").value); var bodyFatPercentage = parseFloat(document.getElementById("bodyFatPercentage").value); var age = parseInt(document.getElementById("age").value); var soldierType = document.getElementById("soldierType").value; // Clear previous errors document.getElementById("heightInchesError").textContent = ""; document.getElementById("bodyFatPercentageError").textContent = ""; document.getElementById("ageError").textContent = ""; var isValid = true; // — Input Validations — if (isNaN(heightInches) || heightInches <= 0) { document.getElementById("heightInchesError").textContent = "Please enter a valid height in inches."; isValid = false; } else if (heightInches 76) { // Typical range for females document.getElementById("heightInchesError").textContent = "Height must be between 58 (4'10\") and 76 (6'4\") inches."; isValid = false; } if (isNaN(bodyFatPercentage) || bodyFatPercentage 60) { // Unrealistic document.getElementById("bodyFatPercentageError").textContent = "Body fat percentage cannot exceed 60%."; isValid = false; } if (isNaN(age) || age <= 0) { document.getElementById("ageError").textContent = "Please enter a valid age."; isValid = false; } else if (age = 17 && age = 21 && age = 26 && age = 31 && age = 36 && age <= 40) { maxAllowedBodyFatPercent = 36; } else { // Age 41+ maxAllowedBodyFatPercent = 38; } // — Simplified Calculation Approach — // To calculate max allowable weight, we need a reference point. // Army uses height-weight tables. We'll use a common estimation based on height range. // This is a simplification. Official calculations use specific tables. var referenceWeight; // Estimated weight based on height, used to calculate LBM // Rough estimates based on average weights for heights, this needs refinement for precision if (heightInches <= 60) referenceWeight = 110; // ~ 5'0" else if (heightInches <= 62) referenceWeight = 115; // ~ 5'2" else if (heightInches <= 64) referenceWeight = 122; // ~ 5'4" else if (heightInches <= 66) referenceWeight = 130; // ~ 5'6" else if (heightInches <= 68) referenceWeight = 138; // ~ 5'8" else if (heightInches maxAllowedBodyFatPercent + 5) { referenceWeight *= 1.05; // Slightly higher if significantly over BF limit } else if (bodyFatPercentage < maxAllowedBodyFatPercent – 5) { referenceWeight *= 0.95; // Slightly lower if significantly under BF limit } // Ensure reference weight is within a reasonable bound for the height range referenceWeight = Math.max(referenceWeight, heightInches * 1.7); // Min weight factor referenceWeight = Math.min(referenceWeight, heightInches * 2.2); // Max weight factor var leanBodyMass = referenceWeight * (1 – (bodyFatPercentage / 100)); var maxFatWeight = leanBodyMass * (maxAllowedBodyFatPercent / 100); var maxAllowableWeight = leanBodyMass / (1 – (maxAllowedBodyFatPercent / 100)); // Ensure maxAllowableWeight doesn't become NaN or Infinity if maxAllowedBodyFatPercent is 100 if (isNaN(maxAllowableWeight) || !isFinite(maxAllowableWeight)) { maxAllowableWeight = referenceWeight; // Fallback } // Ensure LBM and maxFatWeight are not negative leanBodyMass = Math.max(0, leanBodyMass); maxFatWeight = Math.max(0, maxFatWeight); maxAllowableWeight = Math.max(0, maxAllowableWeight); // Calculate current BMI var currentBMI = (referenceWeight / (heightInches * heightInches)) * 703; currentBMI = Math.max(0, currentBMI); // Ensure BMI is not negative // Display Results document.getElementById("primary-result").textContent = maxAllowableWeight.toFixed(1) + " lbs"; document.getElementById("leanBodyMass").textContent = leanBodyMass.toFixed(1); document.getElementById("maxFatWeight").textContent = maxFatWeight.toFixed(1); document.getElementById("bmi").textContent = currentBMI.toFixed(1); // Populate Comparison Table var tableBody = document.getElementById("comparisonTableBody"); tableBody.innerHTML = ""; // Clear previous rows var row1 = tableBody.insertRow(); var cell1_1 = row1.insertCell(0); var cell1_2 = row1.insertCell(1); var cell1_3 = row1.insertCell(2); cell1_1.textContent = "Height"; cell1_2.textContent = heightInches + " inches"; cell1_3.textContent = heightInches + " inches"; // Standard height var row2 = tableBody.insertRow(); var cell2_1 = row2.insertCell(0); var cell2_2 = row2.insertCell(1); var cell2_3 = row2.insertCell(2); cell2_1.textContent = "Max Allowable Body Fat %"; cell2_2.textContent = bodyFatPercentage.toFixed(1) + "%"; cell2_3.textContent = maxAllowedBodyFatPercent + "%"; var row3 = tableBody.insertRow(); var cell3_1 = row3.insertCell(0); var cell3_2 = row3.insertCell(1); var cell3_3 = row3.insertCell(2); cell3_1.textContent = "Max Allowable Weight"; cell3_2.textContent = maxAllowableWeight.toFixed(1) + " lbs"; cell3_3.textContent = maxAllowableWeight.toFixed(1) + " lbs"; // Based on calculated max BF % var row4 = tableBody.insertRow(); var cell4_1 = row4.insertCell(0); var cell4_2 = row4.insertCell(1); var cell4_3 = row4.insertCell(2); cell4_1.textContent = "Current BMI"; cell4_2.textContent = currentBMI.toFixed(1); cell4_3.textContent = "Typically < 27.5 (but BF% is primary)"; // General reference document.getElementById("result-container").style.display = "block"; updateChart(maxAllowableWeight, currentBMI, referenceWeight); } function resetCalculator() { document.getElementById("heightInches").value = "64"; // 5'4" document.getElementById("bodyFatPercentage").value = "25"; document.getElementById("age").value = "25"; document.getElementById("soldierType").value = "Active Duty"; document.getElementById("heightInchesError").textContent = ""; document.getElementById("bodyFatPercentageError").textContent = ""; document.getElementById("ageError").textContent = ""; document.getElementById("result-container").style.display = "none"; if (chartInstance) { chartInstance.destroy(); chartInstance = null; } } function copyResults() { var primaryResult = document.getElementById("primary-result").textContent; var lbm = document.getElementById("leanBodyMass").textContent; var maxFat = document.getElementById("maxFatWeight").textContent; var bmi = document.getElementById("bmi").textContent; var height = document.getElementById("heightInches").value; var bodyFat = document.getElementById("bodyFatPercentage").value; var age = document.getElementById("age").value; var soldierType = document.getElementById("soldierType").value; var assumptions = "Key Assumptions:\n"; assumptions += "- Height: " + height + " inches\n"; assumptions += "- Body Fat %: " + bodyFat + "%\n"; assumptions += "- Age: " + age + "\n"; assumptions += "- Soldier Type: " + soldierType + "\n"; var resultText = "Army Female Weight Calculator Results:\n"; resultText += "Maximum Allowable Weight: " + primaryResult + "\n"; resultText += "Estimated Lean Body Mass: " + lbm + " lbs\n"; resultText += "Max Allowable Fat Weight: " + maxFat + " lbs\n"; resultText += "Current BMI: " + bmi + "\n\n"; resultText += assumptions; // Use a temporary textarea to copy text var textArea = document.createElement("textarea"); textArea.value = resultText; textArea.style.position = "fixed"; textArea.style.left = "-9999px"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'Results copied!' : 'Copying failed'; alert(msg); } catch (err) { alert('Oops, unable to copy'); } document.body.removeChild(textArea); } function updateChart(maxAllowableWeight, currentBMI, referenceWeight) { var ctx = document.getElementById('weightChart').getContext('2d'); // Destroy previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } // Define relevant weight ranges for the chart y-axis var chartMaxY = Math.max(maxAllowableWeight * 1.2, referenceWeight * 1.2, 180); // Ensure chart shows relevant scale var chartMinY = Math.max(0, referenceWeight * 0.7); var chartData = { labels: ['Weight (lbs)'], datasets: [ { label: 'Current Estimated Weight', data: [referenceWeight], // Use the reference weight for current estimation backgroundColor: 'rgba(0, 74, 153, 0.6)', borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1, type: 'bar', // Display as bar order: 2 // Display below line }, { label: 'Max Allowable Weight (Standard)', data: [maxAllowableWeight], backgroundColor: 'rgba(40, 167, 69, 0.6)', borderColor: 'rgba(40, 167, 69, 1)', borderWidth: 1, type: 'bar', // Display as bar order: 1 // Display above current weight bar } ] }; var chartOptions = { responsive: true, maintainAspectRatio: false, // Allows setting height scales: { y: { beginAtZero: true, title: { display: true, text: 'Weight (lbs)' }, suggestedMin: chartMinY, suggestedMax: chartMaxY }, x: { title: { display: true, text: 'Category' } } }, plugins: { legend: { display: true, position: 'top' }, title: { display: true, text: 'Weight Comparison: Current vs. Army Standard' } } }; // Set a fixed height for the canvas if needed, or var CSS handle it document.getElementById('weightChart').style.height = '250px'; // Example fixed height chartInstance = new Chart(ctx, { data: chartData, options: chartOptions, type: 'bar' // Default type, but datasets can override }); } // Load Chart.js library dynamically function loadChartJs() { if (typeof Chart === 'undefined') { var script = document.createElement('script'); script.src = 'https://cdn.jsdelivr.net/npm/chart.js'; script.onload = function() { console.log('Chart.js loaded.'); }; script.onerror = function() { console.error('Failed to load Chart.js'); alert('Error loading charting library. Charts may not display.'); }; document.head.appendChild(script); } } // Initialize calculator with default values on load document.addEventListener('DOMContentLoaded', function() { loadChartJs(); // Load Chart.js when the DOM is ready resetCalculator(); // Set default values // Call calculateWeight() to show initial chart state based on defaults setTimeout(calculateWeight, 100); // Delay slightly to ensure chart lib is loaded });

Leave a Comment