Calculate the final value of gold based on weight, purity, and current market rates.
24K (99.9%)
22K (91.6%)
18K (75.0%)
14K (58.3%)
Price Breakdown
Pure Gold Value (24K equivalent):0.00
Adjusted Value (Selected Karat):0.00
Making Charges:0.00
GST / Tax:0.00
Total Final Price:0.00
function calculateGoldTotal() {
var marketRate24K = parseFloat(document.getElementById('marketRate').value);
var weight = parseFloat(document.getElementById('goldWeight').value);
var karat = parseFloat(document.getElementById('karatPurity').value);
var makingPercent = parseFloat(document.getElementById('makingCharges').value);
var gstPercent = parseFloat(document.getElementById('gstRate').value);
if (isNaN(marketRate24K) || isNaN(weight) || marketRate24K <= 0 || weight <= 0) {
alert("Please enter valid positive numbers for Market Rate and Weight.");
return;
}
// Logic: Market rate is usually quoted for 10 grams of 24K gold
var ratePerGram24K = marketRate24K / 10;
var pureValue = ratePerGram24K * weight;
// Purity adjustment (e.g., 22k is 22/24 of 24k price)
var karatValue = (ratePerGram24K * (karat / 24)) * weight;
// Making charges
var makingChargeAmount = (karatValue * makingPercent) / 100;
// Price before tax
var beforeTax = karatValue + makingChargeAmount;
// GST/Tax
var taxAmount = (beforeTax * gstPercent) / 100;
// Final Price
var finalPrice = beforeTax + taxAmount;
// Display results
document.getElementById('resPureValue').innerText = pureValue.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resKaratValue').innerText = karatValue.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resMakingCharges').innerText = makingChargeAmount.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resGST').innerText = taxAmount.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resTotal').innerText = finalPrice.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('goldResult').style.display = 'block';
}
How to Calculate the Rate of Gold: A Complete Guide
Buying gold is not just about looking at the price tag. Whether you are investing in coins or purchasing jewelry, understanding the mathematics behind gold pricing helps ensure you get a fair deal. In most regions, the final price of gold jewelry is determined by a specific formula involving the daily market rate, the purity of the metal, labor costs, and government taxes.
The Standard Gold Pricing Formula
The industry standard for calculating the final price of gold jewelry is as follows:
Final Price = (Price of Gold × Weight) + Making Charges + Taxes
Key Factors Explained
Market Rate: This is the daily price of 24 Karat gold, usually quoted per 10 grams or per ounce. It fluctuates based on global market conditions.
Purity (Karat): 24K is 99.9% pure gold but is too soft for jewelry. 22K (91.6% gold) is commonly used for ornaments. If you buy 22K gold, the price is adjusted to 22/24ths of the 24K price.
Making Charges: These are labor costs for designing the jewelry. They can range from 3% to 25% depending on the complexity of the design.
GST/Tax: Most countries levy a value-added tax or GST on the purchase of gold. For example, in India, the GST on gold is currently 3%.
Example Calculation
Let's say you want to buy a 10-gram 22K gold chain:
Always check the "Hallmark" on the gold to verify purity. The BIS Hallmark (in India) or similar certifications elsewhere ensure you are getting the karat you pay for. Additionally, compare making charges across different jewelers, as this is the most flexible part of the pricing where you can often negotiate.