BHP, which is the largest miner by market value, made a net profit of $US5.6 billion ($A7.9 billion) ($A7.9 billion) for the first half of 2025/26, on an 11 per cent lift in revenue to $US27.9 billion ($A39.4 billion).
"This half marks a milestone for BHP with copper contributing the largest share of our overall earnings, at 51 per cent of underlying," CEO Mike Henry said on Tuesday.
BHP is also the world's largest copper producer, whose operations include the Escondida mine in Chile and Olympic Dam in South Australia.
The group has now lifted its 2025/26 copper output guidance to 1.9-2.0 million tonnes.
"This is allowing us to maximise increased earnings from the recent run-up in copper prices as well as gold," Mr Henry said.
First half group underlying earnings - before interest, tax, depreciation and amortisation - jumped 25 per cent to $US15.5 billion ($A21.9 billion), after the record $US8 billion ($A11 billion) contribution from copper.
BHP on Tuesday also revealed its jointly owned copper, gold and silver mining business in Argentina will spend $US18 billion ($A25 billion) to develop new projects.
Vicuna Corporation is controlled by BHP and Canada's Lundin Mining.
BHP will pay shareholders a first-half dividend of US73 cents per share, up from US 50 cents previously.
The company has a market value on the Australian stock exchange of $255.8 billion.
