Dhl Volumetric Weight Calculation Malaysia

DHL Volumetric Weight Calculator Malaysia – Calculate Shipping Costs :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ccc; –card-background: #fff; –shadow: 0 2px 5px rgba(0,0,0,0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; } .container { max-width: 960px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); } header { background-color: var(–primary-color); color: #fff; padding: 20px; text-align: center; margin-bottom: 20px; border-radius: 8px 8px 0 0; } header h1 { margin: 0; font-size: 2.2em; font-weight: 700; } .calc-section { margin-bottom: 30px; padding: 20px; border: 1px solid var(–border-color); border-radius: 6px; background-color: var(–card-background); box-shadow: var(–shadow); } .calc-section h2 { color: var(–primary-color); 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DHL Volumetric Weight Calculator Malaysia

Calculate your DHL volumetric weight accurately to understand shipping costs.

DHL Volumetric Weight Calculator

Enter the longest dimension of your package in centimeters.
Enter the second longest dimension of your package in centimeters.
Enter the shortest dimension of your package in centimeters.
5000 (Standard – DHL) 6000 4000 Select the appropriate volumetric factor for your region/carrier. For DHL in Malaysia, 5000 is common.
Calculating…
Actual Weight (kg)
Volumetric Weight (kg)
Chargeable Weight (kg)
The Volumetric Weight is calculated by multiplying Length x Width x Height, then dividing by the Volumetric Factor. The Chargeable Weight is the greater of the Actual Weight or the Volumetric Weight.

Shipment Details Table

Comparison of Actual vs. Volumetric Weight
Metric Value Unit
Length cm
Width cm
Height cm
Actual Weight kg
Volumetric Weight kg
Chargeable Weight kg
Volumetric Factor Used N/A

What is DHL Volumetric Weight Calculation Malaysia?

DHL volumetric weight calculation in Malaysia is a crucial process used by DHL Express and other logistics providers to determine the shipping cost of a package. It's often referred to as "dimensional weight" or "DIM weight." Essentially, it's a way for carriers to account for the space a package occupies on their transport vehicles, not just its actual physical weight. In Malaysia, like in many parts of the world, DHL uses a specific formula and a dimensional factor to calculate this. Understanding this concept is vital for businesses and individuals shipping goods to ensure accurate cost estimation and potentially optimize packaging to reduce expenses. This calculation ensures that lighter but bulky items are charged appropriately, reflecting the space they consume.

Who should use it? Anyone shipping packages internationally or domestically via DHL in Malaysia, including e-commerce businesses, small and medium enterprises (SMEs), manufacturers, and individuals sending parcels. It's particularly important for those who frequently ship items of varying sizes and weights.

Common misconceptions: A common misunderstanding is that only very large items are subject to volumetric weight. However, even moderately sized packages can have a higher volumetric weight than their actual weight. Another misconception is that the volumetric factor is universal; it can vary slightly between carriers and sometimes even regions, although standard factors are widely adopted.

DHL Volumetric Weight Calculation Formula and Mathematical Explanation

The core of DHL volumetric weight calculation in Malaysia relies on a straightforward formula that converts a package's dimensions into an equivalent weight. This equivalent weight is then compared against the package's actual physical weight to determine the shipping charge.

The Formula:

Volumetric Weight (kg) = (Length (cm) × Width (cm) × Height (cm)) / Volumetric Factor

The Chargeable Weight is the higher value between the Actual Weight and the Volumetric Weight.

Variable Explanations:

  • Length (L): The longest dimension of the package.
  • Width (W): The second longest dimension of the package.
  • Height (H): The shortest dimension of the package.
  • Volumetric Factor: A constant number used by the carrier to convert cubic volume into a weight. For DHL Express globally, and commonly in Malaysia, this factor is often 5000 (meaning 5000 cubic centimeters equals 1 kilogram). Other factors like 6000 might be used by different carriers or for specific services.
  • Actual Weight: The measured weight of the package using a scale.
  • Volumetric Weight: The calculated weight based on package dimensions and the volumetric factor.
  • Chargeable Weight: The weight that DHL will bill you for, determined by the higher of the actual weight or the volumetric weight.

Variables Table:

Variable Meaning Unit Typical Range / Value
Length (L) Longest dimension of the parcel cm ≥ 1 cm
Width (W) Second longest dimension of the parcel cm ≥ 1 cm
Height (H) Shortest dimension of the parcel cm ≥ 1 cm
Actual Weight Physical weight measured on a scale kg ≥ 0.1 kg
Volumetric Factor Carrier-specific conversion constant cm³/kg Commonly 5000 for DHL
Volumetric Weight Calculated weight based on volume kg Calculated value
Chargeable Weight Weight used for billing purposes kg Max(Actual Weight, Volumetric Weight)

Practical Examples (Real-World Use Cases)

Let's illustrate the DHL volumetric weight calculation in Malaysia with two practical examples:

Example 1: Shipping a Small, Dense Electronic Component

A business in Kuala Lumpur is shipping a small but heavy electronic component to Singapore via DHL.

  • Dimensions: Length = 15 cm, Width = 10 cm, Height = 8 cm
  • Actual Weight: 2.5 kg
  • Volumetric Factor: 5000
Calculation:

Volume = 15 cm × 10 cm × 8 cm = 1200 cm³

Volumetric Weight = 1200 cm³ / 5000 = 0.24 kg

Comparison:

Actual Weight = 2.5 kg

Volumetric Weight = 0.24 kg

Chargeable Weight:

The higher value is the actual weight (2.5 kg). Therefore, the chargeable weight is 2.5 kg.

Interpretation: In this case, the package is dense, and its actual weight is significantly higher than its volumetric weight. DHL will charge based on the actual weight, as it's the higher value.

Example 2: Shipping Lightweight but Bulky Packaging Material

A company in Penang is sending a large box of protective foam packaging (lightweight but takes up space) to Johor Bahru via DHL.

  • Dimensions: Length = 60 cm, Width = 40 cm, Height = 30 cm
  • Actual Weight: 4 kg
  • Volumetric Factor: 5000
Calculation:

Volume = 60 cm × 40 cm × 30 cm = 72000 cm³

Volumetric Weight = 72000 cm³ / 5000 = 14.4 kg

Comparison:

Actual Weight = 4 kg

Volumetric Weight = 14.4 kg

Chargeable Weight:

The higher value is the volumetric weight (14.4 kg). Therefore, the chargeable weight is 14.4 kg.

Interpretation: This package is bulky relative to its weight. DHL will charge based on the volumetric weight (14.4 kg), not the actual weight (4 kg). This highlights the importance of considering dimensions when shipping lightweight, large items. Proper packaging can sometimes mitigate this, but often, dimensional weight is unavoidable for such goods.

How to Use This DHL Volumetric Weight Calculator Malaysia

Our free online calculator simplifies the process of determining your DHL volumetric weight and chargeable weight in Malaysia. Follow these simple steps:

  1. Measure Your Package: Accurately measure the Length, Width, and Height of your package in centimeters (cm). Ensure you identify the longest, second longest, and shortest dimensions correctly.
  2. Determine Actual Weight: Weigh your package using a reliable scale and note down the weight in kilograms (kg).
  3. Select Volumetric Factor: Choose the correct Volumetric Factor from the dropdown. For most DHL Express shipments in Malaysia, the standard factor is 5000.
  4. Enter Values: Input the measured Length, Width, Height, and Actual Weight into the respective fields in the calculator. Select the correct Volumetric Factor.
  5. Calculate: Click the "Calculate" button. The calculator will instantly display:
    • The calculated Volumetric Weight.
    • The final Chargeable Weight (the greater of Actual or Volumetric Weight).
    • Key intermediate values used in the calculation.
  6. Interpret Results: Compare the Volumetric Weight to your Actual Weight. This comparison directly informs you which weight DHL will use for billing.
  7. Optimize (Optional): If your Volumetric Weight is significantly higher than your Actual Weight, consider ways to reduce the package dimensions (e.g., using smaller boxes, consolidating items) to potentially lower shipping costs. Check out our guide on shipment optimization.
  8. Reset or Copy: Use the "Reset" button to clear fields and perform a new calculation. Use "Copy Results" to save the key figures for your records.

Understanding these results helps you make informed decisions about packaging and shipping strategies. For detailed information on specific DHL service pricing, it's always best to consult DHL Malaysia's official website.

Key Factors That Affect DHL Volumetric Weight Results

Several factors influence the outcome of your DHL volumetric weight calculation and, consequently, your shipping costs:

  1. Package Dimensions (L x W x H): This is the most direct factor. Larger dimensions naturally lead to a higher volume and, potentially, a higher volumetric weight. Precise measurement is critical.
  2. Volumetric Factor: As seen in the formula, the denominator (volumetric factor) significantly impacts the result. A lower factor (e.g., 4000) results in a higher volumetric weight compared to a higher factor (e.g., 5000) for the same dimensions. Using the correct factor provided by DHL is essential. Learn more about shipping cost factors.
  3. Actual Weight Measurement Accuracy: While volumetric weight is calculated, the actual weight is measured. Inaccurate scales can lead to errors. Always use a calibrated scale for precise actual weight.
  4. Packaging Material Choice: Using excessively large boxes or cushioning material for small items will inflate dimensions and volumetric weight. Choosing appropriately sized, sturdy packaging is key.
  5. Item Consolidation: Shipping multiple smaller items in one large box can increase the overall dimensions, potentially making the volumetric weight dominant. Consider if consolidating items is beneficial or detrimental to your chargeable weight.
  6. Service Level Selected: While the volumetric calculation method is standard, the final shipping cost is also determined by the DHL service selected (e.g., Express Worldwide, Express 9:00). Different services have different base rates and surcharges that interact with the chargeable weight.
  7. Fuel Surcharges and Other Fees: DHL imposes additional charges, such as fuel surcharges, which fluctuate based on market conditions. These are added to the base shipping cost calculated from the chargeable weight.
  8. Destination and Origin Country: While the volumetric calculation formula is consistent, base rates, taxes, duties, and specific surcharges can vary significantly depending on the destination and origin countries, affecting the total shipping cost.

Frequently Asked Questions (FAQ)

Q1: What is the standard volumetric factor for DHL in Malaysia?

A1: For DHL Express shipments, the most commonly used volumetric factor in Malaysia is 5000. This means that 5000 cubic centimeters (cm³) is equivalent to 1 kilogram (kg) for pricing purposes.

Q2: How do I measure the dimensions correctly?

A2: Measure the Length (longest side), Width (second longest side), and Height (shortest side) of the package in centimeters. Ensure measurements are taken externally, including any packaging.

Q3: What if my actual weight is very close to the volumetric weight?

A3: DHL will always charge you the higher of the two weights. If they are very close, the difference in cost might be minimal, but it's essential to check the exact values. Our calculator helps you see both clearly.

Q4: Does volumetric weight apply to all DHL services?

A4: Yes, the concept of volumetric weight applies to most express and parcel services offered by DHL globally, including in Malaysia. The specific volumetric factor might sometimes vary slightly depending on the service or region, but 5000 is the standard for DHL Express.

Q5: Can I reduce my shipping costs by using smaller boxes?

A5: Yes, if your volumetric weight is higher than your actual weight, using smaller, appropriately sized boxes can significantly reduce your shipping costs. Optimizing packaging is a key strategy for cost savings.

Q6: Are there exceptions to the volumetric weight calculation?

A6: Generally, volumetric weight applies to all shipments. However, extremely heavy items (where actual weight far exceeds volumetric weight) are primarily charged based on actual weight. Very small, lightweight packets might have different rules, but for typical parcels, volumetric calculation is standard.

Q7: What is the difference between Volumetric Weight and Chargeable Weight?

A7: Volumetric Weight is the calculated weight based on the package's dimensions and the carrier's factor. Chargeable Weight is the final weight used by DHL for billing, which is the higher value between the Volumetric Weight and the Actual Weight of the package.

Q8: Where can I find more information about DHL's shipping policies in Malaysia?

A8: For the most accurate and up-to-date information, please visit the official DHL Malaysia website or contact their customer service.

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function getInputValue(id) { var input = document.getElementById(id); return parseFloat(input.value); } function setHelperText(id, text) { var element = document.getElementById(id); if (element) { element.innerText = text; } } function setError(inputId, errorId, message) { var inputElement = document.getElementById(inputId); var errorElement = document.getElementById(errorId); if (inputElement && errorElement) { if (message) { errorElement.innerText = message; errorElement.style.display = 'block'; inputElement.style.borderColor = '#dc3545'; } else { errorElement.innerText = "; errorElement.style.display = 'none'; inputElement.style.borderColor = '#ccc'; } } } function isValidNumber(value, min = -Infinity, max = Infinity) { return !isNaN(value) && value >= min && value <= max; } function calculateVolumetricWeight() { var length = getInputValue('length'); var width = getInputValue('width'); var height = getInputValue('height'); var actualWeight = getInputValue('actualWeight'); // Assume this input exists for completeness, though not visible in the current HTML structure. If it's meant to be calculated, that's different. For now, let's assume it's manually input or derived elsewhere. var factor = parseFloat(document.getElementById('factor').value); var lengthError = document.getElementById('lengthError'); var widthError = document.getElementById('widthError'); var heightError = document.getElementById('heightError'); var resultDiv = document.getElementById('result'); var tableBody = document.getElementById('shipmentTableBody'); // Clear previous errors and results setError('length', 'lengthError', ''); setError('width', 'widthError', ''); setError('height', 'heightError', ''); resultDiv.style.display = 'none'; var valid = true; if (!isValidNumber(length, 0.1)) { setError('length', 'lengthError', 'Please enter a valid length (minimum 0.1 cm).'); valid = false; } if (!isValidNumber(width, 0.1)) { setError('width', 'widthError', 'Please enter a valid width (minimum 0.1 cm).'); valid = false; } if (!isValidNumber(height, 0.1)) { setError('height', 'heightError', 'Please enter a valid height (minimum 0.1 cm).'); valid = false; } // If actualWeight were an input, we'd validate it here. // For now, let's assume we might need a placeholder for it. // If actualWeight is truly unknown, we should handle it. Let's add a placeholder value for now. actualWeight = 1.0; // Default placeholder if not provided by user. // If there was an actual weight input: // if (!isValidNumber(actualWeight, 0.1)) { // setError('actualWeight', 'actualWeightError', 'Please enter a valid actual weight (minimum 0.1 kg).'); // valid = false; // } if (!valid) { return; } var volume = length * width * height; var volumetricWeight = volume / factor; // Ensure volumetricWeight is not negative or NaN due to invalid factor/calculations if (isNaN(volumetricWeight) || volumetricWeight < 0) { volumetricWeight = 0; // Default to 0 if calculation fails } // Use a placeholder actual weight since it's not an input field in the provided HTML // In a real scenario, this would likely be an input or fetched data. var placeholderActualWeight = 1.0; // Example: A default or fetched value // To make the calculator functional, let's assume a default actual weight, or better, add it as an input. // For now, let's add a dummy input for actual weight to make it work. var actualWeightInput = document.getElementById('actualWeight'); if (!actualWeightInput) { // Dynamically create input if it doesn't exist, or assume a fixed value console.warn("Actual weight input not found. Using a default value of 1.0 kg."); placeholderActualWeight = 1.0; } else { placeholderActualWeight = parseFloat(actualWeightInput.value); if (isNaN(placeholderActualWeight) || placeholderActualWeight < 0.1) { setError('actualWeight', 'actualWeightError', 'Please enter a valid actual weight (minimum 0.1 kg).'); valid = false; // Stop if actual weight is invalid return; } } var chargeableWeight = Math.max(placeholderActualWeight, volumetricWeight); document.getElementById('result').innerText = chargeableWeight.toFixed(2) + ' kg'; document.getElementById('result').style.display = 'block'; document.getElementById('actualWeightResult').innerText = placeholderActualWeight.toFixed(2); document.getElementById('volumetricWeightResult').innerText = volumetricWeight.toFixed(2); document.getElementById('chargeableWeightResult').innerText = chargeableWeight.toFixed(2); // Update table document.getElementById('tableLength').innerText = length.toFixed(1); document.getElementById('tableWidth').innerText = width.toFixed(1); document.getElementById('tableHeight').innerText = height.toFixed(1); document.getElementById('tableActualWeight').innerText = placeholderActualWeight.toFixed(2); document.getElementById('tableVolumetricWeight').innerText = volumetricWeight.toFixed(2); document.getElementById('tableChargeableWeight').innerText = chargeableWeight.toFixed(2); document.getElementById('tableFactor').innerText = factor; updateChart(placeholderActualWeight, volumetricWeight, chargeableWeight); } function resetCalculator() { document.getElementById('length').value = 30; document.getElementById('width').value = 20; document.getElementById('height').value = 10; document.getElementById('factor').value = 5000; // Reset actual weight input if it exists var actualWeightInput = document.getElementById('actualWeight'); if (actualWeightInput) { actualWeightInput.value = 1.0; // Reset to default setError('actualWeight', 'actualWeightError', ''); // Clear error if any } else { console.warn("Actual weight input not found during reset."); } document.getElementById('result').innerText = 'Calculating…'; document.getElementById('result').style.display = 'none'; document.getElementById('actualWeightResult').innerText = '–'; document.getElementById('volumetricWeightResult').innerText = '–'; document.getElementById('chargeableWeightResult').innerText = '–'; document.getElementById('tableLength').innerText = '–'; document.getElementById('tableWidth').innerText = '–'; document.getElementById('tableHeight').innerText = '–'; document.getElementById('tableActualWeight').innerText = '–'; document.getElementById('tableVolumetricWeight').innerText = '–'; document.getElementById('tableChargeableWeight').innerText = '–'; document.getElementById('tableFactor').innerText = '–'; // Clear canvas if chart exists var canvas = document.getElementById('myChart'); if (canvas) { var ctx = canvas.getContext('2d'); ctx.clearRect(0, 0, canvas.width, canvas.height); } // Clear errors setError('length', 'lengthError', ''); setError('width', 'widthError', ''); setError('height', 'heightError', ''); } // Add actualWeight input for the calculator to function correctly. // This is a workaround since it wasn't in the prompt's HTML structure but is essential. document.addEventListener('DOMContentLoaded', function() { var calcContainer = document.querySelector('.loan-calc-container'); if (!document.getElementById('actualWeight')) { var actualWeightGroup = document.createElement('div'); actualWeightGroup.className = 'input-group'; actualWeightGroup.innerHTML = ` Enter the physical weight of your package in kilograms. `; // Insert it after the factor select or at a sensible place var factorSelect = document.getElementById('factor'); if (factorSelect && factorSelect.parentNode) { factorSelect.parentNode.insertBefore(actualWeightGroup, factorSelect.nextSibling); } else { // Fallback if factor select isn't found calcContainer.appendChild(actualWeightGroup); } } calculateVolumetricWeight(); // Initial calculation on load }); function copyResults() { var mainResult = document.getElementById('result').innerText; var actualWeight = document.getElementById('actualWeightResult').innerText; var volumetricWeight = document.getElementById('volumetricWeightResult').innerText; var chargeableWeight = document.getElementById('chargeableWeightResult').innerText; // Get dimensions and factor from the table for completeness var length = document.getElementById('tableLength').innerText; var width = document.getElementById('tableWidth').innerText; var height = document.getElementById('tableHeight').innerText; var factor = document.getElementById('tableFactor').innerText; var copyText = "DHL Volumetric Weight Calculation Results:\n\n" + "Primary Result (Chargeable Weight): " + mainResult + "\n\n" + "Key Details:\n" + "- Actual Weight: " + actualWeight + " kg\n" + "- Volumetric Weight: " + volumetricWeight + " kg\n\n" + "Assumptions/Inputs:\n" + "- Length: " + length + " cm\n" + "- Width: " + width + " cm\n" + "- Height: " + height + " cm\n" + "- Volumetric Factor Used: " + factor + "\n\n" + "Formula: Chargeable Weight is the greater of Actual Weight or (Length * Width * Height / Volumetric Factor)."; // Use navigator.clipboard if available, otherwise fallback if (navigator.clipboard && navigator.clipboard.writeText) { navigator.clipboard.writeText(copyText).then(function() { // Optional: Show a temporary confirmation message var copyButton = document.querySelector('button[onclick="copyResults()"]'); var originalText = copyButton.innerText; copyButton.innerText = 'Copied!'; setTimeout(function() { copyButton.innerText = originalText; }, 2000); }).catch(function(err) { console.error('Could not copy text: ', err); // Fallback for older browsers or environments where clipboard API is restricted fallbackCopyTextToClipboard(copyText); }); } else { fallbackCopyTextToClipboard(copyText); } } function fallbackCopyTextToClipboard(text) { var textArea = document.createElement("textarea"); textArea.value = text; textArea.style.position = "fixed"; // Avoid scrolling to bottom textArea.style.left = "-9999px"; textArea.style.top = "-9999px"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'Copied!' : 'Copy failed!'; // Optional: Show a temporary confirmation message var copyButton = document.querySelector('button[onclick="copyResults()"]'); var originalText = copyButton.innerText; copyButton.innerText = msg; setTimeout(function() { copyButton.innerText = originalText; }, 2000); } catch (err) { console.error('Fallback: Oops, unable to copy', err); } document.body.removeChild(textArea); } var myChart = null; function updateChart(actualWeight, volumetricWeight, chargeableWeight) { var canvas = document.getElementById('myChart'); if (!canvas) return; var ctx = canvas.getContext('2d'); // Destroy previous chart instance if it exists if (myChart) { myChart.destroy(); } // Set canvas dimensions (optional, depends on desired size) canvas.width = 600; canvas.height = 300; var data = { labels: ['Actual Weight', 'Volumetric Weight', 'Chargeable Weight'], datasets: [{ label: 'Weight (kg)', data: [actualWeight, volumetricWeight, chargeableWeight], backgroundColor: [ 'rgba(0, 74, 153, 0.6)', // Primary Blue 'rgba(40, 167, 69, 0.6)', // Success Green 'rgba(108, 117, 125, 0.6)' // Secondary Gray ], borderColor: [ 'rgba(0, 74, 153, 1)', 'rgba(40, 167, 69, 1)', 'rgba(108, 117, 125, 1)' ], borderWidth: 1 }] }; // Basic Chart.js configuration (if using Chart.js – but prompt requires native) // Since native is required, we'll do a simplified SVG or Canvas drawing. // For native Canvas, we need to draw elements manually. // Let's attempt a simplified native canvas drawing. ctx.clearRect(0, 0, canvas.width, canvas.height); // Clear canvas var barWidth = (canvas.width * 0.8) / data.labels.length; var chartAreaHeight = canvas.height * 0.7; var chartAreaY = canvas.height * 0.2; var maxWeight = Math.max(actualWeight, volumetricWeight, chargeableWeight, 1); // Ensure maxWeight is at least 1 for scaling var scaleY = chartAreaHeight / maxWeight; // Draw bars data.datasets[0].data.forEach(function(value, index) { var barHeight = value * scaleY; var x = (canvas.width * 0.1) + (index * barWidth) + (index * (canvas.width * 0.05)); var y = canvas.height – barHeight – (canvas.height * 0.1); // Position bars from bottom ctx.fillStyle = data.datasets[0].backgroundColor[index]; ctx.fillRect(x, y, barWidth, barHeight); ctx.strokeStyle = data.datasets[0].borderColor[index]; ctx.strokeRect(x, y, barWidth, barHeight); // Draw labels below bars ctx.fillStyle = '#333′; ctx.font = '12px Segoe UI'; ctx.textAlign = 'center'; ctx.fillText(data.labels[index], x + barWidth / 2, canvas.height – (canvas.height * 0.05)); // Draw values above bars ctx.fillText(value.toFixed(2) + ' kg', x + barWidth / 2, y – 10); }); // Draw Y-axis scale (simplified) ctx.fillStyle = '#333′; ctx.font = '10px Segoe UI'; ctx.textAlign = 'right'; ctx.fillText(maxWeight.toFixed(1) + ' kg', canvas.width * 0.08, chartAreaY); ctx.fillText('0 kg', canvas.width * 0.08, canvas.height – (canvas.height * 0.1)); ctx.beginPath(); ctx.moveTo(canvas.width * 0.1, chartAreaY); ctx.lineTo(canvas.width * 0.1, canvas.height – (canvas.height * 0.1)); ctx.stroke(); // Simple Title ctx.font = '16px Segoe UI'; ctx.textAlign = 'center'; ctx.fillText('Weight Comparison', canvas.width / 2, canvas.height * 0.1); // Re-initialize chart variable if using a library like Chart.js // Since we're using native canvas, we don't need to manage `myChart` instance like that. // The `ctx.clearRect` handles redrawing. } // Call calculateVolumetricWeight on page load after ensuring the input for actualWeight exists // DOMContentLoaded ensures the elements are ready document.addEventListener('DOMContentLoaded', function() { // Ensure actualWeight input exists, create if not (as done above) // Then call calculateVolumetricWeight calculateVolumetricWeight(); });

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