How this calculator works
The calculator starts from the live 24K gold price per troy ounce, converted to SGD at the current exchange rate. Your weight is converted to grams (1 troy ounce = 31.1034768 g, 1 tola = 11.6638038 g), and the value is adjusted for purity — the multiplier is simply the karat divided by 24, so 22K/916 gold uses 22 ÷ 24 ≈ 0.9167. The formula: value = grams × pure gram price × purity, plus any premium and minus any discount you enter.
Singapore jewellers sell both 916 (22K) jewellery — popular for weddings and gifting — and 999 pieces. Prices are quoted in Singapore dollars per gram and move daily with the international spot price and the USD/SGD exchange rate.