LME Copper Price Today

The London Metal Exchange (LME) is the world's largest market for industrial metals, and copper is its flagship contract. Founded in 1877, the LME sets global benchmark prices for copper through open-outcry ring trading and electronic platforms. LME copper is quoted in US dollars per metric tonne, with each standard lot representing 25 tonnes of Grade A copper (minimum 99.9935% purity). The exchange operates from London but serves as the global reference price for physical copper transactions worldwide.

LME vs COMEX copper pricing reflects two sides of the same market. The LME quotes in dollars per metric tonne while COMEX (part of CME Group) quotes in US cents per pound. Despite the different units, the two benchmarks maintain a 99%+ price correlation because arbitrage traders continuously exploit any divergence. To convert LME per-tonne pricing to COMEX per-pound: divide the LME price by 2,204.62. Conversely, multiply the COMEX per-pound price by 2,204.62 to get the per-tonne equivalent. For example, an LME price of $9,500/tonne equals approximately $4.31/lb on COMEX.

LME copper contracts come in several forms. The cash contract settles in two business days and represents the spot price. The 3-month contract is the most actively traded and serves as the primary benchmark. The LME also offers monthly contracts out to 123 months (over 10 years). Ring trading occurs in five-minute sessions where dealers trade by open outcry, and the official settlement price is set during the second ring session at 12:30 London time.

Several factors drive LME copper prices. China consumes over 50% of global copper output, making Chinese manufacturing data and construction activity the single largest demand driver. Global industrial production, electrification trends, and electric vehicle adoption add structural demand. On the supply side, mine disruptions in Chile, Peru, and the Democratic Republic of Congo can tighten markets quickly. The strength of the US dollar also matters since copper is dollar-denominated, making it more expensive for buyers in other currencies when the dollar rises.

LME warehouse stocks serve as a critical market signal. The LME operates a global network of approved warehouses where physical copper can be delivered against futures contracts. When warehouse stocks fall, it signals tight physical supply and often pushes prices higher through backwardation (where near-term prices exceed forward prices). Conversely, rising stocks suggest oversupply. Traders monitor daily LME stock reports and warrant cancellations (metal earmarked for withdrawal) as leading indicators of price direction.