Tin Weight Calculator

Tin Weight Calculator – Calculate Tin Mass Accurately :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ddd; –card-bg: #ffffff; –error-color: #dc3545; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); margin: 0; padding: 0; line-height: 1.6; display: flex; justify-content: center; padding-top: 20px; padding-bottom: 40px; } .container { width: 100%; max-width: 1000px; margin: 0 auto; padding: 20px; background-color: var(–card-bg); border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); } h1, h2, h3 { color: var(–primary-color); text-align: center; } h1 { margin-bottom: 10px; } h2 { margin-top: 30px; margin-bottom: 15px; border-bottom: 2px solid var(–primary-color); padding-bottom: 5px; } h3 { margin-top: 20px; margin-bottom: 10px; font-size: 1.3em; } .loan-calc-container { background-color: var(–card-bg); padding: 30px; border-radius: 8px; box-shadow: 0 1px 5px rgba(0, 0, 0, 0.05); margin-bottom: 30px; } .input-group { margin-bottom: 20px; text-align: left; } .input-group label { display: block; margin-bottom: 8px; font-weight: bold; color: var(–primary-color); } .input-group input[type="number"], .input-group select { width: calc(100% – 22px); padding: 10px; border: 1px solid var(–border-color); border-radius: 4px; font-size: 1em; box-sizing: border-box; } .input-group .helper-text { font-size: 0.8em; color: #6c757d; margin-top: 5px; display: block; } .error-message { color: var(–error-color); font-size: 0.85em; margin-top: 5px; display: block; min-height: 1.2em; } button { background-color: var(–primary-color); color: white; border: none; padding: 12px 20px; border-radius: 5px; cursor: pointer; font-size: 1em; margin-right: 10px; transition: background-color 0.3s ease; } button:hover { background-color: #003366; } button.secondary { background-color: #6c757d; } button.secondary:hover { background-color: #5a6268; } .results-container { margin-top: 25px; padding: 20px; border: 1px solid var(–border-color); border-radius: 5px; background-color: #eef3f7; } .results-container h3 { text-align: left; margin-top: 0; color: var(–primary-color); } .result-item { margin-bottom: 10px; font-size: 0.95em; } .result-item span { font-weight: bold; } .primary-result { font-size: 1.6em; font-weight: bold; color: var(–primary-color); background-color: #cfe2ff; padding: 15px; border-radius: 5px; margin-top: 10px; text-align: center; margin-bottom: 15px; } .formula-explanation { font-size: 0.9em; color: #555; margin-top: 15px; padding-top: 10px; border-top: 1px dashed var(–border-color); } #chartContainer { text-align: center; margin-top: 30px; } #tinWeightChart { max-width: 100%; height: auto; border: 1px solid var(–border-color); border-radius: 5px; background-color: var(–card-bg); } .chart-caption { font-size: 0.9em; color: #6c757d; margin-top: 8px; display: block; } table { width: 100%; border-collapse: collapse; margin-top: 20px; margin-bottom: 30px; } th, td { border: 1px solid var(–border-color); padding: 10px; text-align: left; } th { background-color: #eef3f7; color: var(–primary-color); font-weight: bold; } tr:nth-child(even) { background-color: #f8f9fa; } .article-content { margin-top: 40px; padding: 0 15px; } .article-content p, .article-content ul, .article-content ol { margin-bottom: 20px; } .article-content li { margin-bottom: 10px; } .article-content a { color: var(–primary-color); text-decoration: none; } .article-content a:hover { text-decoration: underline; } .faq-item { margin-bottom: 15px; } .faq-item h3 { margin-bottom: 5px; font-size: 1.1em; color: var(–primary-color); text-align: left; } .faq-item p { margin-bottom: 0; } .related-tools ul { list-style: none; padding: 0; } .related-tools li { margin-bottom: 15px; } .related-tools a { font-weight: bold; } .related-tools span { display: block; font-size: 0.9em; color: #6c757d; margin-top: 3px; }

Tin Weight Calculator

Accurately determine the mass of tin based on its dimensions and density.

Tin Weight Calculator

Cuboid (Rectangular Prism) Cylinder Sphere Select the geometric shape of the tin.
Enter the length of the tin in cm.
Enter the width of the tin in cm.
Enter the height of the tin in cm.
Enter the radius of the cylinder/sphere base in cm.
Enter the diameter of the cylinder/sphere base in cm.
Pure Tin (7.31 g/cm³) Solder Tin (approx. 7.28 g/cm³) Tin-Lead Solder (approx. 7.36 g/cm³) Custom (enter below) Select standard density or enter a custom value.
Enter custom density in g/cm³.
Enter a custom density value for tin in grams per cubic centimeter.

Calculation Results

Volume: cm³
Density: g/cm³
Weight: g

Weight is calculated by multiplying the Volume of the tin by its Density. Volume calculation depends on the shape (e.g., L*W*H for a cuboid).

Weight vs. Volume Analysis

Comparison of tin weight for different volumes at selected density.

Formula & Variables

Variable Meaning Unit Typical Range
L, W, H Length, Width, Height cm 1 – 1000+
r, d Radius, Diameter cm 1 – 500+
Density Mass per unit volume g/cm³ 7.28 – 7.36 (typical)
Volume Space occupied by the tin cm³ Calculated
Weight Total mass of the tin g (grams) Calculated

What is a Tin Weight Calculator?

A Tin Weight Calculator is a specialized online tool designed to help users quickly and accurately determine the mass (weight) of a tin object based on its physical dimensions and the density of the tin material. Tin, a versatile metal, is used in various applications, from electronics soldering to food preservation (tin cans) and alloys like bronze. Understanding the weight of tin is crucial for material costing, shipping calculations, manufacturing processes, and scientific research.

This calculator simplifies the complex geometry and density calculations often required. Instead of manually performing volume calculations for different shapes and then multiplying by density, users can input simple measurements, and the tool provides an instant, precise weight. This is invaluable for hobbyists, engineers, manufacturers, and anyone working with tin in bulk or in specific component forms.

Who should use it:

  • Manufacturers: Estimating raw material costs, planning production batches, and ensuring accurate product weight.
  • Engineers & Designers: Specifying materials for components, calculating load capacities, and optimizing designs for weight.
  • Soldering Professionals: Determining the amount of solder needed for electronic components or plumbing.
  • Researchers: Calculating tin mass for experiments, material science studies, or chemical processes.
  • Logistics & Shipping: Estimating package weights for shipping tin products or raw materials.
  • Hobbyists & DIYers: Calculating materials for crafts, model making, or custom projects involving tin.

Common Misconceptions:

  • "Weight" vs. "Mass": While colloquially used interchangeably, weight is technically a force (mass times gravity), and mass is the amount of matter. This calculator calculates mass in grams, which is commonly referred to as weight in everyday contexts.
  • Uniform Density: Assuming all tin products have the same density. In reality, tin alloys (like solder) have slightly different densities than pure tin, which can affect precise weight calculations.
  • Ignoring Shape: Believing that the shape doesn't matter for weight calculation. While density is constant, volume varies significantly with shape, directly impacting total weight.

Tin Weight Calculator Formula and Mathematical Explanation

The fundamental principle behind calculating the tin weight is the relationship between mass, density, and volume, often expressed by the formula:

Mass = Volume × Density

Here's a step-by-step breakdown:

  1. Determine the Shape: First, identify the geometric shape of the tin object (e.g., cuboid, cylinder, sphere).
  2. Calculate the Volume: Based on the shape and the provided dimensions, calculate the volume. The formulas vary:
    • Cuboid (Rectangular Prism): Volume = Length × Width × Height (V = L × W × H)
    • Cylinder: Volume = π × Radius² × Height (V = πr²h)
    • Sphere: Volume = (4/3) × π × Radius³ (V = (4/3)πr³)
  3. Identify the Density: Determine the density of the specific type of tin being used. Pure tin has a standard density, but tin alloys (like solder) can have slightly different values.
  4. Calculate the Mass (Weight): Multiply the calculated volume by the density to find the mass.

Variable Explanations:

  • Length (L), Width (W), Height (H): Linear measurements defining the dimensions of a rectangular prism.
  • Radius (r): The distance from the center to the edge of a circle, used for cylinders and spheres.
  • Diameter (d): The distance across a circle through its center (d = 2r). Often used interchangeably with radius calculations.
  • Volume (V): The amount of three-dimensional space the tin occupies.
  • Density (ρ): The mass of a substance per unit of volume. For tin, it's typically measured in grams per cubic centimeter (g/cm³).
  • Mass (m) / Weight: The total amount of matter in the tin, typically calculated in grams (g) or kilograms (kg).
Variable Meaning Unit Typical Range
L, W, H Length, Width, Height cm 0.1 – 1000+
r, d Radius, Diameter cm 0.05 – 500+
Density (ρ) Mass per unit volume g/cm³ 7.28 – 7.36 (typical for tin and common alloys)
Volume (V) Space occupied by the tin cm³ Calculated (e.g., 0.1 to 1,000,000+)
Mass (m) Total mass of the tin g (grams) Calculated (e.g., 0.7 to 7,300,000+ g)

Practical Examples (Real-World Use Cases)

Example 1: Calculating the Weight of a Tin Ingot

A manufacturer needs to determine the weight of a rectangular tin ingot for inventory. The ingot measures 20 cm in length, 10 cm in width, and 5 cm in height. The tin used is high-purity tin with a density of 7.31 g/cm³.

  • Shape: Cuboid
  • Inputs:
    • Length (L) = 20 cm
    • Width (W) = 10 cm
    • Height (H) = 5 cm
    • Density = 7.31 g/cm³
  • Calculation:
    • Volume = L × W × H = 20 cm × 10 cm × 5 cm = 1000 cm³
    • Weight = Volume × Density = 1000 cm³ × 7.31 g/cm³ = 7310 g
  • Result: The tin ingot weighs 7310 grams (or 7.31 kg). This information is vital for tracking inventory and calculating shipping costs.

Example 2: Determining the Mass of Solder Wire

A technician is using a cylindrical spool of solder wire for electronics work. The spool has a diameter of 6 cm and a height of 2 cm. The solder is a common tin-lead alloy with an approximate density of 7.36 g/cm³.

  • Shape: Cylinder
  • Inputs:
    • Diameter (d) = 6 cm (so Radius (r) = 3 cm)
    • Height (h) = 2 cm
    • Density = 7.36 g/cm³
  • Calculation:
    • Volume = π × r² × h = π × (3 cm)² × 2 cm = π × 9 cm² × 2 cm ≈ 56.55 cm³
    • Weight = Volume × Density ≈ 56.55 cm³ × 7.36 g/cm³ ≈ 416.14 g
  • Result: The mass of the solder wire on the spool is approximately 416.14 grams. This helps in estimating how much soldering work can be done with a single spool.

How to Use This Tin Weight Calculator

Using the Tin Weight Calculator is straightforward. Follow these simple steps:

  1. Select Tin Shape: Choose the geometric shape that best represents your tin object from the "Tin Shape" dropdown menu (Cuboid, Cylinder, or Sphere).
  2. Enter Dimensions:
    • For a Cuboid, input the Length, Width, and Height in centimeters (cm).
    • For a Cylinder, input the Radius and Height in centimeters (cm).
    • For a Sphere, input the Radius in centimeters (cm).
    • Ensure you enter only positive numerical values. The calculator provides inline error messages if inputs are invalid.
  3. Specify Tin Density: Select the appropriate density from the dropdown. Common options for pure tin and solder alloys are provided. If your tin has a specific density not listed, choose "Custom" and enter the exact value in g/cm³ in the field that appears.
  4. View Results: As you input the values, the calculator will automatically update the intermediate results (Volume, Density, Weight) and display the primary result (Total Weight in grams) prominently.
  5. Interpret Results: The main result shows the total weight of your tin object in grams. Use this information for material costing, shipping, or project planning.
  6. Copy Results: If you need to record or share the calculated values, click the "Copy Results" button.
  7. Reset: To start over with default values, click the "Reset" button.

Key Factors That Affect Tin Weight Results

While the calculator simplifies the process, several underlying factors influence the accuracy and relevance of the calculated tin weight:

  1. Accuracy of Dimensions: The most direct factor. If the measurements for length, width, height, or radius are inaccurate, the calculated volume will be incorrect, leading to a wrong weight. Precision in measuring is key.
  2. Tin Density Variation: Pure tin has a specific density (~7.31 g/cm³), but most applications involve tin alloys (like solder, bronze, pewter). Each alloy has a slightly different density depending on its composition. Using the correct density for the specific alloy is crucial for accurate tin weight calculation. Our calculator includes common values, but custom input might be necessary.
  3. Geometric Shape Assumption: The calculator assumes perfect geometric shapes. Real-world objects might have rounded edges, irregular forms, or hollow sections, which deviate from ideal shapes. This can lead to discrepancies between calculated and actual weight.
  4. Temperature Effects: While minor for solids at room temperature, density can change slightly with temperature. For highly precise scientific applications, temperature corrections might be considered, though this calculator operates on standard density values.
  5. Impurities and Alloying Elements: Even within a "pure" tin designation, trace impurities can exist. In alloys, the precise ratio of tin to other metals (lead, copper, silver, antimony, etc.) significantly impacts the overall density and thus the weight.
  6. Units Consistency: Ensuring all input dimensions are in the same unit (centimeters in this calculator) and that density is in compatible units (g/cm³) is vital. Inconsistent units will yield nonsensical results. The calculator outputs weight in grams.
  7. Hollow Structures or Inclusions: If the tin object is hollow (like a tin can) or contains non-tin inclusions, the simple volume calculation will overestimate the weight. Advanced calculations would be needed to account for these complexities.

Frequently Asked Questions (FAQ)

Q1: What is the standard density of tin?

A: The density of pure tin (at room temperature) is approximately 7.31 grams per cubic centimeter (g/cm³). However, common tin alloys like solder can have slightly different densities, typically ranging from 7.28 g/cm³ to 7.36 g/cm³ or higher depending on the alloying elements.

Q2: Does the calculator calculate mass or weight?

A: This calculator computes the mass of the tin in grams. In everyday language, "weight" is often used to mean mass. Technically, weight is a force (mass × gravitational acceleration), but for practical material calculations, mass is the relevant quantity.

Q3: Can I use this calculator for tin cans?

A: This calculator is designed for solid tin objects. A tin can is hollow. To calculate its weight, you would need to calculate the volume of the tin material itself (outer volume minus inner volume) or use the weight of the empty can if known.

Q4: What units should I use for dimensions?

A: Please use centimeters (cm) for all length, width, height, and radius inputs. The density should be entered in grams per cubic centimeter (g/cm³). The final weight will be calculated in grams (g).

Q5: What happens if I enter zero or negative values?

A: The calculator is designed to reject zero or negative values for dimensions and density, as these are physically impossible. Error messages will appear below the respective input fields to guide you.

Q6: How accurate are the results for tin alloys?

A: The accuracy depends on the density value you input or select. If you use the provided typical values for common solder alloys, the results will be approximate. For high-precision applications, use the exact density specification of your specific tin alloy.

Q7: What does the chart show?

A: The chart visually compares the weight of tin for different volumes, assuming a constant density. It helps illustrate the direct relationship between volume and weight – larger volumes mean proportionally larger weights.

Q8: Can this calculator be used for other metals?

A: Yes, the principle (Mass = Volume × Density) is universal. You could adapt this calculator for other metals by changing the density value. However, the "Tin Weight Calculator" branding and default densities are specific to tin.

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var selectedShape = "cuboid"; var selectedDensityValue = 7.31; var chartInstance = null; function updateInputs() { selectedShape = document.getElementById("tinShape").value; var lengthGroup = document.getElementById("lengthGroup"); var widthGroup = document.getElementById("widthGroup"); var heightGroup = document.getElementById("heightGroup"); var radiusGroup = document.getElementById("radiusGroup"); var diameterGroup = document.getElementById("diameterGroup"); lengthGroup.style.display = "block"; widthGroup.style.display = "block"; heightGroup.style.display = "block"; radiusGroup.style.display = "none"; diameterGroup.style.display = "none"; if (selectedShape === "cylinder" || selectedShape === "sphere") { lengthGroup.style.display = "none"; widthGroup.style.display = "none"; heightGroup.style.display = "block"; // Height is still needed for cylinder radiusGroup.style.display = "block"; diameterGroup.style.display = "block"; // Show diameter for user convenience } calculateTinWeight(); } function updateSelectedDensity() { var customDensityInput = document.getElementById("customDensity"); var customDensityValue = parseFloat(customDensityInput.value); var tinDensitySelect = document.getElementById("tinDensity"); var customDensityGroup = document.getElementById("customDensityGroup"); if (!isNaN(customDensityValue) && customDensityValue > 0) { selectedDensityValue = customDensityValue; tinDensitySelect.value = "7.30"; // Set to Custom option document.getElementById("customTinDensityLabel").style.display = "block"; document.getElementById("customTinDensityValue").style.display = "block"; document.getElementById("customTinDensityHelper").style.display = "block"; document.getElementById("customTinDensityValue").value = customDensityValue; } else { // If custom density field is cleared or invalid, revert to selected value var selectedOption = tinDensitySelect.options[tinDensitySelect.selectedIndex]; if (selectedOption.value === "7.30") { // Fallback if custom density was cleared, pick a default or first option selectedDensityValue = 7.31; tinDensitySelect.value = "7.31"; } else { selectedDensityValue = parseFloat(selectedOption.value); } document.getElementById("customTinDensityLabel").style.display = "none"; document.getElementById("customTinDensityValue").style.display = "none"; document.getElementById("customTinDensityHelper").style.display = "none"; } calculateTinWeight(); } function handleDensityChange() { var tinDensitySelect = document.getElementById("tinDensity"); var customDensityGroup = document.getElementById("customDensityGroup"); var customDensityInput = document.getElementById("customDensity"); var customTinDensityValueInput = document.getElementById("customTinDensityValue"); if (tinDensitySelect.value === "7.30") { customDensityGroup.style.display = "block"; document.getElementById("customTinDensityLabel").style.display = "block"; document.getElementById("customTinDensityValue").style.display = "block"; document.getElementById("customTinDensityHelper").style.display = "block"; // If custom density was previously set, use it. Otherwise, prompt user. if (customDensityInput.value) { updateSelectedDensity(); } else { customDensityInput.value = ""; // Clear custom field if selecting 'Custom' initially customTinDensityValueInput.value = ""; selectedDensityValue = 7.31; // Default to pure tin if custom is empty document.getElementById("densityResult").textContent = selectedDensityValue.toFixed(2); } } else { customDensityGroup.style.display = "none"; document.getElementById("customTinDensityLabel").style.display = "none"; document.getElementById("customTinDensityValue").style.display = "none"; document.getElementById("customTinDensityHelper").style.display = "none"; selectedDensityValue = parseFloat(tinDensitySelect.value); document.getElementById("densityResult").textContent = selectedDensityValue.toFixed(2); } calculateTinWeight(); } function validateInput(id, errorId, minValue = 0, maxValue = Infinity) { var input = document.getElementById(id); var errorSpan = document.getElementById(errorId); var value = parseFloat(input.value); errorSpan.textContent = ""; // Clear previous error if (input.value === "") { errorSpan.textContent = "This field is required."; return false; } if (isNaN(value)) { errorSpan.textContent = "Please enter a valid number."; return false; } if (value maxValue) { errorSpan.textContent = "Value exceeds reasonable limit."; return false; } return true; } function calculateTinWeight() { var isValid = true; var length, width, height, radius, diameter, volume, weight; var density = selectedDensityValue; // Use the globally tracked density // Clear previous results and errors document.getElementById("volumeResult").textContent = "–"; document.getElementById("weightResult").textContent = "–"; document.getElementById("primaryResult").textContent = "–"; document.getElementById("densityResult").textContent = "–"; document.getElementById("lengthError").textContent = ""; document.getElementById("widthError").textContent = ""; document.getElementById("heightError").textContent = ""; document.getElementById("radiusError").textContent = ""; document.getElementById("diameterError").textContent = ""; document.getElementById("customDensityError").textContent = ""; document.getElementById("customTinDensityValueError").textContent = ""; // Density handling handleDensityChange(); // Ensure density is updated before calculation density = selectedDensityValue; // Re-assign after handleDensityChange document.getElementById("densityResult").textContent = density.toFixed(2); // Dimension validation and calculation based on shape if (selectedShape === "cuboid") { if (!validateInput("length", "lengthError", 0, 10000)) isValid = false; if (!validateInput("width", "widthError", 0, 10000)) isValid = false; if (!validateInput("height", "heightError", 0, 10000)) isValid = false; if (isValid) { length = parseFloat(document.getElementById("length").value); width = parseFloat(document.getElementById("width").value); height = parseFloat(document.getElementById("height").value); volume = length * width * height; } } else if (selectedShape === "cylinder") { if (!validateInput("radius", "radiusError", 0, 5000)) isValid = false; if (!validateInput("height", "heightError", 0, 10000)) isValid = false; // Also validate diameter for completeness, though radius is used if (!validateInput("diameter", "diameterError", 0, 10000)) isValid = false; if (isValid) { radius = parseFloat(document.getElementById("radius").value); height = parseFloat(document.getElementById("height").value); volume = Math.PI * Math.pow(radius, 2) * height; } } else if (selectedShape === "sphere") { if (!validateInput("radius", "radiusError", 0, 5000)) isValid = false; // No height needed for sphere, but ensure other inputs are valid if shown // Radius is the primary input here if (isValid) { radius = parseFloat(document.getElementById("radius").value); volume = (4 / 3) * Math.PI * Math.pow(radius, 3); } } // Final weight calculation if all inputs are valid if (isValid && volume !== undefined && density !== undefined) { weight = volume * density; document.getElementById("volumeResult").textContent = volume.toFixed(2); document.getElementById("weightResult").textContent = weight.toFixed(2) + " g"; document.getElementById("primaryResult").textContent = "Weight: " + weight.toFixed(2) + " g"; // Update chart data updateChart(density); } else { // Reset results if validation failed document.getElementById("volumeResult").textContent = "–"; document.getElementById("weightResult").textContent = "–"; document.getElementById("primaryResult").textContent = "–"; updateChart(density); // Update chart even with invalid inputs to reset view } } function copyResults() { var volume = document.getElementById("volumeResult").textContent; var density = document.getElementById("densityResult").textContent; var weight = document.getElementById("weightResult").textContent; var primaryResultText = document.getElementById("primaryResult").textContent; var shape = document.getElementById("tinShape").value; var length = document.getElementById("length").value; var width = document.getElementById("width").value; var height = document.getElementById("height").value; var radius = document.getElementById("radius").value; var diameter = document.getElementById("diameter").value; var selectedDensityName = document.getElementById("tinDensity").options[document.getElementById("tinDensity").selectedIndex].text; var resultString = "— Tin Weight Calculation Results —\n\n"; resultString += "Shape: " + shape.toUpperCase() + "\n"; if (shape === "cuboid") { resultString += "Dimensions: L=" + length + " cm, W=" + width + " cm, H=" + height + " cm\n"; } else if (shape === "cylinder") { resultString += "Dimensions: Radius=" + radius + " cm, Height=" + height + " cm\n"; resultString += "(Diameter: " + diameter + " cm)\n"; } else if (shape === "sphere") { resultString += "Dimensions: Radius=" + radius + " cm\n"; } resultString += "Tin Density: " + selectedDensityName + " (" + density + ")\n"; resultString += "\n"; resultString += "Calculated Volume: " + volume + "\n"; resultString += primaryResultText + "\n"; // Includes the main weight result resultString += "\n— End Results —"; // Use navigator.clipboard for modern browsers if (navigator.clipboard && navigator.clipboard.writeText) { navigator.clipboard.writeText(resultString).then(function() { alert("Results copied to clipboard!"); }).catch(function(err) { console.error("Could not copy text: ", err); fallbackCopyTextToClipboard(resultString); }); } else { fallbackCopyTextToClipboard(resultString); } } // Fallback for older browsers 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 ? 'successful' : 'unsuccessful'; console.log('Fallback: Copying text command was ' + msg); alert("Results copied to clipboard!"); } catch (err) { console.error('Fallback: Oops, unable to copy', err); alert("Failed to copy results. Please copy manually."); } document.body.removeChild(textArea); } function resetCalculator() { document.getElementById("tinShape").value = "cuboid"; document.getElementById("length").value = ""; document.getElementById("width").value = ""; document.getElementById("height").value = ""; document.getElementById("radius").value = ""; document.getElementById("diameter").value = ""; document.getElementById("tinDensity").value = "7.31"; document.getElementById("customDensity").value = ""; document.getElementById("customTinDensityValue").value = ""; document.getElementById("volumeResult").textContent = "–"; document.getElementById("weightResult").textContent = "–"; document.getElementById("primaryResult").textContent = "–"; document.getElementById("densityResult").textContent = "–"; document.getElementById("lengthError").textContent = ""; document.getElementById("widthError").textContent = ""; document.getElementById("heightError").textContent = ""; document.getElementById("radiusError").textContent = ""; document.getElementById("diameterError").textContent = ""; document.getElementById("customDensityError").textContent = ""; document.getElementById("customTinDensityValueError").textContent = ""; updateInputs(); // Reset display of input fields handleDensityChange(); // Reset density display // Reset chart if (chartInstance) { chartInstance.destroy(); chartInstance = null; } initializeChart(); } function initializeChart() { var ctx = document.getElementById("tinWeightChart").getContext("2d"); chartInstance = new Chart(ctx, { type: 'bar', // Changed to bar for better comparison data: { labels: [], // Will be populated by updateChart datasets: [{ label: 'Tin Weight (g)', data: [], // Will be populated by updateChart backgroundColor: 'rgba(0, 74, 153, 0.6)', // Primary color shade borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Weight (grams)' } }, x: { title: { display: true, text: 'Volume (cm³)' } } }, plugins: { tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || "; if (label) { label += ': '; } if (context.parsed.y !== null) { label += context.parsed.y.toFixed(2) + ' g'; } // Add volume info from label label += ' (Volume: ' + context.label + ' cm³)'; return label; } } } } } }); } function updateChart(density) { if (!chartInstance) { initializeChart(); } var dataPoints = []; var labels = []; var volumesToTest = [100, 500, 1000, 2000, 5000, 10000, 20000]; // Example volumes for (var i = 0; i < volumesToTest.length; i++) { var volume = volumesToTest[i]; var weight = volume * density; labels.push(volume.toString()); // Use volume as label dataPoints.push(weight); } chartInstance.data.labels = labels; chartInstance.data.datasets[0].data = dataPoints; chartInstance.options.datasets[0].label = 'Tin Weight (g) at ' + density.toFixed(2) + ' g/cm³'; // Update label dynamically chartInstance.update(); } // Initial setup document.addEventListener("DOMContentLoaded", function() { updateInputs(); // Set initial display based on default shape handleDensityChange(); // Set initial density display initializeChart(); // Initialize chart on load calculateTinWeight(); // Perform initial calculation });

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