function calculateGoldRate() {
var weight = parseFloat(document.getElementById('goldWeight').value);
var unit = document.getElementById('weightUnit').value;
var carat = parseFloat(document.getElementById('goldCarat').value);
var pricePerGram = parseFloat(document.getElementById('currentPrice').value);
var makingPercent = parseFloat(document.getElementById('makingCharges').value);
var taxPercent = parseFloat(document.getElementById('taxRate').value);
if (isNaN(weight) || isNaN(pricePerGram) || weight <= 0) {
alert("Please enter valid numeric values.");
return;
}
// Convert weight to grams for uniform calculation
var weightInGrams = weight;
if (unit === 'tola') { weightInGrams = weight * 11.6638; }
else if (unit === 'ounce') { weightInGrams = weight * 31.1035; }
else if (unit === 'kg') { weightInGrams = weight * 1000; }
// Calculate Purity Factor
var purityFactor = carat / 24;
// Base Value
var baseValue = weightInGrams * pricePerGram * purityFactor;
// Making Charges
var makingAmount = baseValue * (makingPercent / 100);
// Subtotal before tax
var subTotal = baseValue + makingAmount;
// Tax
var taxAmount = subTotal * (taxPercent / 100);
// Final Total
var finalTotal = subTotal + taxAmount;
// Display results
document.getElementById('resBaseValue').innerText = baseValue.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resMaking').innerText = makingAmount.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resTax').innerText = taxAmount.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resTotal').innerText = finalTotal.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('goldResult').style.display = 'block';
}
How to Use the Gold Rate Calculator App
Buying gold involves more than just looking at the market ticker. Our professional Gold Rate Calculator helps you estimate the final billing price by accounting for weight variations, purity levels (karats), and additional costs like jewelry making charges and taxes.
Understanding Gold Purity (Carat)
Gold purity is measured in Karats (K). The higher the karat, the purer the gold:
24K Gold: 99.9% pure gold. It is soft and usually sold as coins or bars.
22K Gold: 91.6% pure gold mixed with alloys like copper or silver. It is the standard for high-quality jewelry.
18K Gold: 75.0% pure gold. Highly durable and commonly used for diamond-studded jewelry.
Calculating the Final Price
To calculate the actual cost of a gold ornament, we use the following formula:
Final Price = (Weight × Current Rate × Purity Percentage) + Making Charges + Applied Taxes
Common Weight Units
While grams are the global standard, many regions use traditional units. This app supports:
Tola: Commonly used in India and Pakistan (approx. 11.66 grams).
Troy Ounce: The standard unit in international bullion markets (approx. 31.10 grams).
Example Calculation
If you are buying a 10g gold chain of 22K purity, and the market rate for 24K gold is 65 per gram:
Value of 22K Gold: 10g × 65 × (22/24) = 595.83
Making Charges (5%): 29.79
GST/Tax (3%): 18.77
Total Payable: 644.39
Note: Gold rates fluctuate daily based on global market conditions. Always verify with your local jeweler for the most accurate current price.