US inflation has hit a 39-year high in the latest sign of a cost of living squeeze for consumers in the world's biggest economy.

Figures from America's Bureau of Labor Statistics (BLS) showed consumer price index (CPI) inflation hit 6.8% last month, the biggest year-on-year surge in prices since June 1982.

The reading, which was in line with expectations, was up from 6.2% in October.

Federal chair Jerome Powell has been taken aback by the persistence of inflation

Prices climbed across the board, with fuel prices, housing, food and cars among the bigger contributors, the report said.

An index of eating out prices showed a 5.8% increase, its highest rate since January 1982, while food eaten at home saw its sharpest year-on-year rise since December 2008.

Fuel prices were up by 58.1% on the same period in 2020 - the biggest annual rate of increase since April 1980.

Inflation has been fuelled by a combination of factors linked to the economy's rebound from the pandemic in a trend being mirrored, though at slightly more modest rates, in Europe and the UK - where it has been predicted that price growth will comfortably top 5% by the spring.

It has put pressure on the Federal Reserve to find a way to roll back more quickly multi-billion dollar stimulus programmes and ultra-low interest rate policies that cushioned the US economy through the pandemic without damaging the recovery.

High inflation also creates a headache for Joe Biden as he faces flagging public support.

Inflation creates a headache for Joe Biden as he faces flagging public support

Global supply chain shortages are among the factors putting upward pressure on prices as manufacturers struggle to meet resurgent demand while ports jam up.

Meanwhile, employers struggling with labour shortages have been raising pay.

The persistence of inflation has surprised the Fed, with the central bank's chair Jerome Powell two weeks ago abandoning his insistence that it was a "transitory" result of supply bottlenecks.

He has now signalled that the Fed - whose officials meet next week to hammer out their latest policy decision - is likely to go faster in scaling back stimulus.

But some experts see signs of pressures easing as oil and gas prices declining.

The emergence of the Omicron could have a further dampening effect if it means waning demand for shopping trips, travel and eating out.