The latest fall came as food and non-alcoholic beverage prices saw a record year-on-year drop of 3.3%. They have been flat or falling for 10 months - the longest stretch since 2000 - amid the supermarket price war.
Staple products such as milk, cheese, eggs, bread, jam and chocolate were among those putting downward pressure on CPI.
Motor fuels also saw a record decline, at 16.6%. A litre of petrol fell to 107p in February from 108.3p in January, down from 129p in February last year.
CPI was also driven down by some retail prices that saw smaller than usual increases in February after January discounts.
Chancellor George Osborne has hailed a fall in inflation to 0%, saying it shows Labour's economic argument has "literally come to nought".
Inflation at zero is a first for the British economy. Low inflation due to falling oil prices is good news for family budgets
Prices are frozen & as the recovery from Labour's Great Recession strengthens, their economic argument has literally come to nought
Chief Secretary to the Treasury Danny Alexander has said that the new ONS figures on the economy show that 'earnings are pulling ahead of prices'.
Prime Minister David Cameron has said that ONS figures showing inflation at 0% is 'good news for family budgets'.
Inflation is running at 0% - the lowest on record. It's good news for family budgets and a sign our long term plan is working.
House prices grew 8.5% in England, 4.9% in Wales, 7.8% in Scotland & 7.3% in N. Ireland in year to January, according to the Office for National Statistics.
Inflation fell to zero last month setting the UK on course for a period of falling prices for the first time in half a century.
The Consumer Price Index (CPI) measure of inflation dropped after recording 0.3% in January, according to the Office for National Statistics. It was a sharper than expected fall and sets a new record low for CPI since comparable records began in 1989. Inflation is expected to dip further in coming months. An experimental model created by the ONS suggests the last time it was negative was in March 1960, at minus 0.6%.
The UK inflation rate fell to 0.3% in January - the lowest annual rate on record, official figures show.
The rate of Retail Price Index inflation also fell to 1.1% from 1.6% the previous month.
The Office for National Statistics said falling prices for food and fuel were the main factors behind the drop.
ITV News Economics Editor Richard Edgar said the 0.9% fall in inflation over the past year is the largest since 2001.
The fall in inflation over the past year - 0.9% - is the largest since 2001