This calculator shows today's gold price per gram in the UK, in GBP — the gold rate in the UK per gram, sourced from a live spot price and refreshed three times a day. Whether you want to know todays gold price per gram UK for an insurance valuation, or the price of gold per gram UK today to sell an old piece, start here and use the purity dropdown to match your item's hallmark.
Looking for a specific purity? Jump straight to the 24 carat, 22 carat, 18 carat, 21 carat, 14k or 9ct page, each with a dedicated calculator and hallmark guide.
Gold Price Per Gram UK — By Purity
Gold Price Per Gram in GBP — Why It Moves
The price of gold per gram in GBP is driven by two things: the international gold spot price (quoted in US dollars per troy ounce) and the GBP/USD exchange rate. When the pound weakens against the dollar, the UK gold rate per gram can rise even if the dollar gold price is flat — this is why a gold rate in UK per gram calculator needs a live GBP feed, not a simple currency-converted estimate.
How This Calculator Works — Formula & Method
Source: goldapi.io live spot feed · applied deterministically · see full methodology
price_per_gram(purity) = goldapi.price_gram_[purity]
// 9ct has no goldapi.io field, so it's the one purity actually derived by fraction
price_per_gram(9ct) = price_per_gram(24k) × 0.375
total_value = price_per_gram(purity) × weight_in_grams
Live spot price, not an AI estimate — updated three times daily from goldapi.io. This is an indicative price, not a dealer quote. See the full methodology for why most purities are read directly rather than derived by fraction.