Gold Weight Calculator Price

Gold Weight Calculator Price | Calculate Gold Value Instantly :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ccc; –card-bg: #fff; –shadow: 0 4px 8px 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(–background-color); margin: 0; padding: 0; } .container { max-width: 1000px; margin: 20px auto; padding: 20px; background-color: var(–card-bg); border-radius: 8px; box-shadow: var(–shadow); } header { background-color: var(–primary-color); color: white; padding: 20px; text-align: center; border-radius: 8px 8px 0 0; margin: -20px -20px 20px -20px; } h1, h2, h3 { color: var(–primary-color); } h1 { font-size: 2.5em; margin-bottom: 0.5em; } h2 { font-size: 2em; margin-top: 1.5em; border-bottom: 2px solid var(–primary-color); padding-bottom: 0.3em; } h3 { font-size: 1.5em; margin-top: 1em; } .loan-calc-container { background-color: var(–card-bg); padding: 25px; border-radius: 8px; box-shadow: var(–shadow); 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; } .input-group small { display: block; margin-top: 5px; font-size: 0.85em; color: #666; } .error-message { color: red; font-size: 0.85em; margin-top: 5px; display: none; /* Hidden by default */ } .button-group { display: flex; justify-content: space-between; margin-top: 25px; gap: 10px; } button { padding: 12px 20px; border: none; border-radius: 5px; cursor: pointer; font-size: 1em; font-weight: bold; transition: background-color 0.3s ease; } .btn-calculate { background-color: var(–primary-color); color: white; flex-grow: 1; } .btn-calculate:hover { background-color: #003366; } .btn-reset { background-color: #6c757d; color: white; } .btn-reset:hover { background-color: #5a6268; } .btn-copy { background-color: #ffc107; color: #212529; } .btn-copy:hover { background-color: #e0a800; } #results-container { margin-top: 30px; padding: 20px; background-color: var(–card-bg); border-radius: 8px; box-shadow: var(–shadow); border: 1px solid var(–primary-color); } #results-container h3 { margin-top: 0; color: var(–primary-color); text-align: center; border-bottom: 1px solid var(–border-color); padding-bottom: 10px; } .main-result { font-size: 2.5em; font-weight: bold; color: var(–success-color); text-align: center; margin: 15px 0; background-color: #e9f7ef; padding: 15px; border-radius: 5px; } .intermediate-values div, .key-assumptions div { margin-bottom: 10px; font-size: 1.1em; } .intermediate-values span, .key-assumptions span { font-weight: bold; color: var(–primary-color); } .formula-explanation { font-size: 0.95em; color: #555; margin-top: 20px; padding: 10px; background-color: #f0f0f0; border-left: 4px solid var(–primary-color); border-radius: 3px; } table { width: 100%; border-collapse: collapse; margin-top: 20px; } th, td { border: 1px solid var(–border-color); padding: 10px; text-align: left; } th { background-color: var(–primary-color); color: white; } td { background-color: var(–card-bg); } caption { font-weight: bold; margin-bottom: 10px; color: var(–primary-color); font-size: 1.1em; } canvas { display: block; margin: 20px auto; max-width: 100%; height: auto !important; } .chart-container { text-align: center; margin-top: 20px; } .chart-container figcaption { font-size: 0.9em; color: #555; margin-top: 5px; } .article-content { margin-top: 40px; background-color: var(–card-bg); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); } .article-content p, .article-content ul, .article-content ol { margin-bottom: 1em; } .article-content li { margin-bottom: 0.5em; } .article-content a { color: var(–primary-color); text-decoration: none; } .article-content a:hover { text-decoration: underline; } .faq-item { margin-bottom: 15px; } .faq-item h4 { margin-bottom: 5px; color: var(–primary-color); cursor: pointer; } .faq-item p { margin-left: 15px; display: none; /* Initially hidden */ } .faq-item.open p { display: block; } .variable-table td, .variable-table th { background-color: #fff; } .variable-table th { background-color: #e9ecef; color: var(–text-color); } .related-links ul { list-style: none; padding: 0; } .related-links li { margin-bottom: 10px; padding-bottom: 10px; border-bottom: 1px dashed var(–border-color); } .related-links li:last-child { border-bottom: none; padding-bottom: 0; } @media (max-width: 768px) { .container { margin: 10px; padding: 15px; } header { padding: 15px; margin: -15px -15px 15px -15px; } h1 { font-size: 2em; } h2 { font-size: 1.75em; } .button-group { flex-direction: column; } }

Gold Weight Calculator Price

Effortlessly determine the value of your gold based on weight, purity, and current market price.

Enter the weight of your gold in grams (g).
24K (Pure Gold) 22K 18K 14K 10K Other (Specify Below) Select the purity of your gold in Karats (K).
Enter the exact gold percentage if not using standard Karat values.
Enter the current market price of pure gold (24K) per gram.

Calculation Results

Pure Gold Weight: g
Actual Purity: %
Value per Gram (Your Gold): $
Formula Used:

The total value is calculated by first determining the actual weight of pure gold in your item. This is done by multiplying the total weight by the purity percentage. Then, this pure gold weight is multiplied by the current market price of pure gold per gram. Finally, this is adjusted for the specific purity of your gold to find the value per gram of your item, and then multiplied by the total weight to get the total value.

Value Distribution by Purity
Gold Purity Standards
Karat (K) Purity (%) Gold Price per Gram (24K) Your Gold Value per Gram
24K 100.00%
22K 91.67%
18K 75.00%
14K 58.33%
10K 41.67%

What is a Gold Weight Calculator Price?

A Gold Weight Calculator Price is an online tool designed to help individuals and businesses quickly estimate the market value of gold based on its physical weight, its purity (often expressed in Karats), and the current spot price of gold. This tool simplifies the often complex process of valuing gold, making it accessible to anyone looking to buy, sell, or simply understand the worth of their gold holdings. It eliminates guesswork and provides a transparent estimation, especially useful for common transactions involving jewelry, bullion, or scrap gold.

Who should use it:

  • Individuals selling gold jewelry or heirlooms: To get a baseline understanding of its worth before visiting a dealer.
  • Investors in precious metals: To track the value of their physical gold holdings.
  • Jewelers and pawn shops: As a quick reference tool for making offers.
  • Anyone curious about the value of gold items: For educational or personal interest.

Common misconceptions:

  • Confusing Karat with Carat: Karat (K) measures gold purity, while Carat (ct) measures gemstone weight.
  • Assuming calculator price is final offer: The calculated price is an estimate based on spot price; dealers will often offer less due to refining costs, assay fees, and profit margins.
  • Ignoring the impact of craftsmanship and market demand: A unique piece of jewelry might command a higher price than its raw gold value, while melted scrap gold is valued purely on weight and purity.

Gold Weight Calculator Price Formula and Mathematical Explanation

The core of the gold weight calculator price lies in a straightforward calculation that accounts for weight, purity, and market price. The process involves several key steps to arrive at an accurate estimation.

Step-by-Step Derivation:

  1. Determine Pure Gold Weight: The first step is to find out how much actual pure gold is present in the item. Gold purity is typically measured in Karats (K), where 24K represents pure gold (99.9% or higher). For other Karat values, we convert them to a percentage.
  2. Calculate Value per Gram of Your Gold: The market price is usually quoted for 24K gold. To find the value of your specific gold, you need to adjust this price based on its purity.
  3. Calculate Total Estimated Value: Finally, multiply the actual pure gold weight by the calculated value per gram of your gold to get the total estimated value.

Variable Explanations:

The calculator uses the following variables:

Variable Meaning Unit Typical Range
Weight of Gold The total physical mass of the gold item. grams (g) 0.1 – 10,000+ g
Purity (Karat) The measure of gold's fineness, where 24K is pure gold. Karat (K) 10K, 14K, 18K, 22K, 24K
Custom Purity Percentage (%) The precise gold content if not using standard Karat values. Percentage (%) 0.01 – 99.99 %
Gold Price per Gram (24K) The current market price for one gram of 24-Karat (pure) gold. Dollars ($) $30 – $100+ (highly variable)
Pure Gold Weight The calculated weight of only the pure gold content within the item. grams (g) Derived from Weight and Purity
Actual Purity The precise percentage of gold in the item, derived from Karat or custom input. Percentage (%) Derived from Purity
Value per Gram (Your Gold) The estimated value of one gram of your specific gold item. Dollars ($) Derived from Gold Price and Purity
Total Estimated Value The final estimated market value of the gold item. Dollars ($) Derived from Pure Gold Weight and Value per Gram

Mathematical Explanation:

Let:

  • W = Weight of Gold (g)
  • P = Actual Purity (%) – derived from Karat or custom input
  • MP = Gold Price per Gram (24K) ($/g)

1. Pure Gold Weight (PGW):
PGW = W * (P / 100)

2. Value per Gram of Your Gold (VPG):
VPG = MP * (P / 100)
(This is the value of 1 gram of your gold, not pure gold)

3. Total Estimated Value (TEV):
TEV = PGW * MP OR TEV = W * (P / 100) * MP
Alternatively, using the Value per Gram of Your Gold: TEV = W * VPG

The calculator uses the most direct route: Total Value = Weight * (Purity / 100) * Gold Price per Gram (24K).

Practical Examples (Real-World Use Cases)

Example 1: Selling a Gold Bracelet

Sarah has a 14K gold bracelet that weighs 25 grams. The current market price for pure gold (24K) is $65.50 per gram. She wants to estimate its value before selling it to a local jeweler.

  • Inputs:
    • Weight of Gold: 25 g
    • Purity: 14K
    • Gold Price per Gram (24K): $65.50
  • Calculations:
    • Actual Purity (14K): 58.33%
    • Pure Gold Weight: 25 g * (58.33 / 100) = 14.58 g
    • Value per Gram (Your Gold): $65.50 * (58.33 / 100) = $38.21
    • Total Estimated Value: 25 g * $38.21 = $955.25
  • Financial Interpretation: Sarah can expect her 25-gram 14K bracelet to be worth approximately $955.25 based on the current gold price. A jeweler might offer slightly less due to melt fees and their profit margin, perhaps around $750-$850.

Example 2: Valuing Inherited Gold Coins

John inherited a collection of gold coins. He identified one coin as being 22K gold and it weighs 10 grams. The spot price for 24K gold is currently $70.00 per gram.

  • Inputs:
    • Weight of Gold: 10 g
    • Purity: 22K
    • Gold Price per Gram (24K): $70.00
  • Calculations:
    • Actual Purity (22K): 91.67%
    • Pure Gold Weight: 10 g * (91.67 / 100) = 9.17 g
    • Value per Gram (Your Gold): $70.00 * (91.67 / 100) = $64.17
    • Total Estimated Value: 10 g * $64.17 = $641.70
  • Financial Interpretation: John's 10-gram 22K gold coin has an estimated value of $641.70. This calculation provides a solid reference point for discussions with gold dealers or refiners. It's important to note that collector value might exceed this melt value if the coins are rare or in pristine condition.

How to Use This Gold Weight Calculator Price

Using the Gold Weight Calculator Price is simple and intuitive. Follow these steps to get your gold valuation:

  1. Enter Gold Weight: Input the total weight of your gold item in grams (g) into the 'Weight of Gold' field. Be as accurate as possible.
  2. Select Purity: Choose the purity of your gold from the 'Purity (Karat)' dropdown menu (e.g., 24K, 18K, 14K). If your gold has a different, specific percentage purity, select 'Other' and enter the exact percentage in the 'Custom Purity Percentage (%)' field that appears.
  3. Input Market Price: Find the current market price of pure gold (24K) per gram and enter it into the 'Gold Price per Gram ($)' field. You can usually find this information on financial news websites or precious metal dealer sites.
  4. Calculate: Click the 'Calculate Value' button.

How to read results:

  • The Primary Result (large, highlighted number) shows the total estimated market value of your gold item.
  • Intermediate Values provide insights into the Pure Gold Weight, Actual Purity, and the calculated Value per Gram specific to your gold's purity.
  • The Table breaks down standard purity values and their corresponding prices per gram, helping you compare.
  • The Chart visually represents how the value changes across different purity levels for the same weight and market price.

Decision-making guidance: Use the calculated value as a benchmark. If you are selling, compare the offers you receive from various buyers against this estimated value. Remember that melt value is different from retail value or collector value.

Key Factors That Affect Gold Weight Calculator Price Results

While the calculator provides a solid estimate, several external factors can influence the actual price you might receive for your gold:

  1. Current Gold Market Price (Spot Price): This is the most significant factor. Gold prices fluctuate constantly based on global economic conditions, inflation fears, geopolitical stability, and currency movements. The calculator uses a snapshot price; significant changes can alter the value.
  2. Purity Accuracy: The calculator relies on accurate purity input. If your gold is less pure than stated (e.g., 14K marked, but actually 12K), the calculated value will be overestimated. Reputable dealers will assay the gold to confirm purity.
  3. Weight Measurement: Precision in weighing is crucial. Even small discrepancies in grams can lead to noticeable differences in value, especially for larger quantities. Ensure you use an accurate scale.
  4. Buyer's Costs and Profit Margin: Gold buyers (jewelers, refiners, dealers) incur costs for assaying, refining, melting, and administrative overhead. They also need to make a profit. Therefore, they typically offer less than the calculated melt value. This difference is often referred to as the "buy spread."
  5. Form of Gold: The calculator primarily estimates melt value. Investment-grade gold bullion (bars, specific coins) often trades at a premium over spot price due to their recognized weight and purity. Conversely, intricate jewelry might have higher retail value due to craftsmanship, but its melt value is based purely on gold content. Scrap gold is valued solely on its gold content.
  6. Fees and Assaying Costs: Some buyers might charge fees for testing or assaying the gold, which will reduce the final amount you receive. Be clear about any such charges upfront.
  7. Geographical Location: While the global gold price is a benchmark, local market conditions, demand, and the presence of multiple buyers can influence the price offered in your specific region.
  8. Taxes: Depending on your jurisdiction, profits from selling gold may be subject to capital gains tax. This doesn't affect the calculator's output but is a financial consideration for sellers.

Frequently Asked Questions (FAQ)

Q1: What is the difference between Karat (K) and Carat (ct)?

A: Karat (K) measures the purity of gold alloys. 24K is pure gold. Carat (ct) measures the weight of gemstones, where one carat is equal to 0.2 grams.

Q2: How accurate is this gold weight calculator?

A: The calculator provides a highly accurate estimate of the gold's *melt value* based on the inputs you provide and the current spot price. It does not account for collector's value, brand premiums, or a specific buyer's offered price.

Q3: Where can I find the current gold price per gram?

A: You can find the current gold price (often called the spot price) on reputable financial news websites (e.g., Kitco, Bloomberg, Reuters), bullion dealer websites, or by performing a quick web search for "gold price per gram today."

Q4: Does the calculator include fees or premiums?

A: No, this calculator estimates the raw gold value based on weight, purity, and market price. It does not include dealer fees, refining costs, premiums for investment-grade bullion, or potential collector's value.

Q5: What if my gold item has gemstones?

A: This calculator is designed for the gold content only. Gemstones are valued separately and are not included in the calculation. If selling, the buyer may deduct the value of the gold to account for the unset gemstones.

Q6: Can I use this calculator for silver or platinum?

A: No, this calculator is specifically designed for gold. Precious metals like silver and platinum have different market prices and purity standards, requiring a dedicated calculator.

Q7: What is the difference between 18K and 22K gold value?

A: 22K gold is approximately 91.67% pure gold, while 18K gold is 75% pure. Therefore, for the same weight and market price of pure gold, 22K gold will always be valued higher than 18K gold because it contains a larger proportion of pure gold.

Q8: Will I get the exact price shown by the calculator when I sell my gold?

A: It is unlikely you will receive the exact calculated price from a buyer. Buyers offer a price that reflects their costs and profit margins, which is typically lower than the full melt value. This calculator provides a valuable reference point for negotiation.

Related Tools and Internal Resources

var goldWeightInput = document.getElementById('goldWeight'); var goldPuritySelect = document.getElementById('goldPurity'); var customPurityGroup = document.getElementById('customPurityGroup'); var customPurityPercentageInput = document.getElementById('customPurityPercentage'); var goldPricePerGramInput = document.getElementById('goldPricePerGram'); var mainResultDiv = document.getElementById('mainResult'); var pureGoldWeightSpan = document.getElementById('pureGoldWeight').querySelector('span'); var actualPuritySpan = document.getElementById('actualPurity').querySelector('span'); var valuePerGramSpan = document.getElementById('valuePerGram').querySelector('span'); var table24kPriceTd = document.getElementById('table24kPrice'); var table24kValueTd = document.getElementById('table24kValue'); var table22kPriceTd = document.getElementById('table22kPrice'); var table22kValueTd = document.getElementById('table22kValue'); var table18kPriceTd = document.getElementById('table18kPrice'); var table18kValueTd = document.getElementById('table18kValue'); var table14kPriceTd = document.getElementById('table14kPrice'); var table14kValueTd = document.getElementById('table14kValue'); var table10kPriceTd = document.getElementById('table10kPrice'); var table10kValueTd = document.getElementById('table10kValue'); var purityMap = { 24: { name: '24K', purity: 99.90, percentage: 99.90 }, 22: { name: '22K', purity: 91.67, percentage: 91.67 }, 18: { name: '18K', purity: 75.00, percentage: 75.00 }, 14: { name: '14K', purity: 58.33, percentage: 58.33 }, 10: { name: '10K', purity: 41.67, percentage: 41.67 } }; var chart; var chartInstance = null; // To hold the chart instance function updateChart(goldPricePerGram) { var ctx = document.getElementById('valueChart').getContext('2d'); if (chartInstance) { chartInstance.destroy(); // Destroy previous chart instance } // Purity values for chart (from lowest to highest Karat) var chartPurities = [ { karat: 10, percentage: 41.67 }, { karat: 14, percentage: 58.33 }, { karat: 18, percentage: 75.00 }, { karat: 22, percentage: 91.67 }, { karat: 24, percentage: 99.90 } ]; var chartLabels = chartPurities.map(function(p) { return p.karat + 'K'; }); var dataSeries1 = chartPurities.map(function(p) { // Value of 1 gram of YOUR gold at this purity return (goldPricePerGram * (p.percentage / 100)).toFixed(2); }); var dataSeries2 = chartPurities.map(function(p) { // Value of PURE gold equivalent in 1 gram of YOUR gold // This shows how much pure gold's value is contained return (goldPricePerGram * (p.percentage / 100)).toFixed(2); }); chartInstance = new Chart(ctx, { type: 'bar', data: { labels: chartLabels, datasets: [ { label: 'Estimated Value per Gram ($)', data: dataSeries1, backgroundColor: 'rgba(0, 74, 153, 0.6)', // Primary color borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1 }, // Adding a second series to show the comparison more clearly // This second series shows the value if it were ALL pure gold (for comparison) { label: 'Pure Gold Value ($/g)', data: chartPurities.map(function(p) { return goldPricePerGram.toFixed(2); }), backgroundColor: 'rgba(40, 167, 69, 0.4)', // Success color borderColor: 'rgba(40, 167, 69, 1)', borderWidth: 1 } ] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, ticks: { callback: function(value) { return '$' + value; } } } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Estimated Value per Gram by Purity' } } } }); } function calculateGoldValue() { // Clear previous errors document.getElementById('goldWeightError').style.display = 'none'; document.getElementById('goldPurityError').style.display = 'none'; document.getElementById('customPurityPercentageError').style.display = 'none'; document.getElementById('goldPricePerGramError').style.display = 'none'; var weight = parseFloat(goldWeightInput.value); var purityKarat = parseInt(goldPuritySelect.value); var customPurityPercentage = parseFloat(customPurityPercentageInput.value); var pricePerGram = parseFloat(goldPricePerGramInput.value); var isValid = true; // Validation if (isNaN(weight) || weight <= 0) { document.getElementById('goldWeightError').textContent = 'Please enter a valid weight greater than 0.'; document.getElementById('goldWeightError').style.display = 'block'; isValid = false; } if (isNaN(pricePerGram) || pricePerGram <= 0) { document.getElementById('goldPricePerGramError').textContent = 'Please enter a valid price per gram greater than 0.'; document.getElementById('goldPricePerGramError').style.display = 'block'; isValid = false; } var selectedPurityPercentage; var selectedPurityName; if (purityKarat === 'other') { if (isNaN(customPurityPercentage) || customPurityPercentage 100) { document.getElementById('customPurityPercentageError').textContent = 'Please enter a custom purity percentage between 0.01 and 100.'; document.getElementById('customPurityPercentageError').style.display = 'block'; isValid = false; } else { selectedPurityPercentage = customPurityPercentage; selectedPurityName = customPurityPercentage + '%'; } } else { selectedPurityPercentage = purityMap[purityKarat].percentage; selectedPurityName = purityMap[purityKarat].name; } if (!isValid) { // Reset results if invalid input mainResultDiv.textContent = '--'; pureGoldWeightSpan.textContent = '--'; actualPuritySpan.textContent = '--'; valuePerGramSpan.textContent = '--'; return; } // Calculations var pureGoldWeight = weight * (selectedPurityPercentage / 100); var valuePerGramOfYourGold = pricePerGram * (selectedPurityPercentage / 100); var totalValue = weight * valuePerGramOfYourGold; // Update results mainResultDiv.textContent = '$' + totalValue.toFixed(2); pureGoldWeightSpan.textContent = pureGoldWeight.toFixed(3) + ' g'; actualPuritySpan.textContent = selectedPurityName + ' (' + selectedPurityPercentage.toFixed(2) + '%)'; valuePerGramSpan.textContent = '$' + valuePerGramOfYourGold.toFixed(2); // Update table updatePurityTable(pricePerGram); // Update chart updateChart(pricePerGram); } function updatePurityTable(goldPricePerGram) { table24kPriceTd.textContent = '$' + goldPricePerGram.toFixed(2); table24kValueTd.textContent = '$' + (goldPricePerGram * (purityMap[24].percentage / 100)).toFixed(2); table22kPriceTd.textContent = '$' + goldPricePerGram.toFixed(2); table22kValueTd.textContent = '$' + (goldPricePerGram * (purityMap[22].percentage / 100)).toFixed(2); table18kPriceTd.textContent = '$' + goldPricePerGram.toFixed(2); table18kValueTd.textContent = '$' + (goldPricePerGram * (purityMap[18].percentage / 100)).toFixed(2); table14kPriceTd.textContent = '$' + goldPricePerGram.toFixed(2); table14kValueTd.textContent = '$' + (goldPricePerGram * (purityMap[14].percentage / 100)).toFixed(2); table10kPriceTd.textContent = '$' + goldPricePerGram.toFixed(2); table10kValueTd.textContent = '$' + (goldPricePerGram * (purityMap[10].percentage / 100)).toFixed(2); } function resetCalculator() { goldWeightInput.value = '10'; // Sensible default weight goldPuritySelect.value = '18'; // Sensible default purity customPurityPercentageInput.value = ''; customPurityGroup.style.display = 'none'; // Hide custom purity input goldPricePerGramInput.value = '65.50'; // Example current price // Clear errors document.getElementById('goldWeightError').style.display = 'none'; document.getElementById('goldPurityError').style.display = 'none'; document.getElementById('customPurityPercentageError').style.display = 'none'; document.getElementById('goldPricePerGramError').style.display = 'none'; calculateGoldValue(); // Recalculate with defaults } function copyResults() { var mainResult = mainResultDiv.textContent; var pureGoldWeightText = document.getElementById('pureGoldWeight').textContent.replace('Pure Gold Weight: ', ''); var actualPurityText = document.getElementById('actualPurity').textContent.replace('Actual Purity: ', ''); var valuePerGramText = document.getElementById('valuePerGram').textContent.replace('Value per Gram (Your Gold): ', ''); var assumptions = [ 'Weight: ' + document.getElementById('goldWeight').value + ' g', 'Purity: ' + document.getElementById('goldPurity').value + (document.getElementById('goldPurity').value === 'other' ? ' (' + document.getElementById('customPurityPercentage').value + '%)' : ''), 'Gold Price per Gram (24K): $' + document.getElementById('goldPricePerGram').value ]; var textToCopy = "--- Gold Valuation ---\n\n"; textToCopy += "Main Result: " + mainResult + "\n"; textToCopy += "Pure Gold Weight: " + pureGoldWeightText + "\n"; textToCopy += "Actual Purity: " + actualPurityText + "\n"; textToCopy += "Value per Gram (Your Gold): " + valuePerGramText + "\n\n"; textToCopy += "--- Key Assumptions ---\n"; textToCopy += assumptions.join('\n'); // Use navigator.clipboard for modern browsers, fallback to execCommand if (navigator.clipboard && navigator.clipboard.writeText) { navigator.clipboard.writeText(textToCopy).then(function() { alert('Results copied to clipboard!'); }).catch(function(err) { console.error('Could not copy text: ', err); fallbackCopyTextToClipboard(textToCopy); }); } else { fallbackCopyTextToClipboard(textToCopy); } } 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 ? 'Results copied to clipboard!' : 'Failed to copy results.'; alert(msg); } catch (err) { console.error('Fallback: Oops, unable to copy', err); alert('Failed to copy results.'); } document.body.removeChild(textArea); } // Event listener for purity select change goldPuritySelect.addEventListener('change', function() { if (this.value === 'other') { customPurityGroup.style.display = 'block'; } else { customPurityGroup.style.display = 'none'; customPurityPercentageInput.value = ''; // Clear custom input if not 'other' } }); // Initial calculation on page load document.addEventListener('DOMContentLoaded', function() { // Load Chart.js from CDN var chartJsScript = document.createElement('script'); chartJsScript.src = 'https://cdn.jsdelivr.net/npm/chart.js'; chartJsScript.onload = function() { resetCalculator(); // Set defaults and calculate // Also ensure initial chart is drawn if defaults are set var initialPrice = parseFloat(goldPricePerGramInput.value); if (!isNaN(initialPrice) && initialPrice > 0) { updateChart(initialPrice); } }; document.head.appendChild(chartJsScript); // Initialize FAQ toggles var faqItems = document.querySelectorAll('.faq-item h4'); faqItems.forEach(function(item) { item.addEventListener('click', function() { var parent = this.parentElement; parent.classList.toggle('open'); }); }); });

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