UK inflation rate in 2018: 2.48%

UK Inflation Calculator


Inflation in 2018 and Its Effect on Pound Value

Purchasing power decreased by 2.48% in 2018 compared to 2017. On average, you would have to spend 2.48% more money in 2018 than in 2017 for the same item.

In other words, £1 in 2017 is equivalent in purchasing power to about £1.02 in 2018.

The 2017 inflation rate was 3.58%. The inflation rate in 2018 was 2.48%. The 2018 inflation rate is higher compared to the average inflation rate of 1.80% per year between 2018 and 2019.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 2018 was 1,101.59. It was 1,074.90 in the previous year, 2017. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation.

Inflation from 2017 to 2018
Average inflation rate 2.48%
Converted amount (£1 base) £1.02
Price difference (£1 base) £0.02
CPI in 2017 1,074.900
CPI in 2018 1,101.593
Inflation in 2017 3.58%
Inflation in 2018 2.48%

UK inflation chart from 1988 to 2017. Based on the UK Consumer Price Index.

How to Calculate Inflation Rate for £1, 2017 to 2018

This inflation calculator uses the following inflation rate formula:

CPI in 2018CPI in 2017
2017 GBP value
2018 GBP value

Then plug in historical CPI values. The UK CPI was 1074.9 in the year 2017 and 1101.59335 in 2018:


£1 in 2017 has the same "purchasing power" or "buying power" as £1.02 in 2018.

To get the total inflation rate for the 1 years between 2017 and 2018, we use the following formula:

CPI in 2018 - CPI in 2017CPI in 2017
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

1101.59335 - 1074.91074.9

News headlines from 2017

Politics and news often influence economic performance. Here's what was happening at the time:

  • Donald Trump sworn in as the 45th president of the United States.
  • Hurricanes Harvey and Irma strike southeast Texas and Florida, causing extensive flooding and damage.
  • Gunman kills 58 people at a Las Vegas concert, making it the deadliest mass shooting in modern U.S. history.
  • North Korea tests a hydrogen bomb and over a dozen ballistic missiles amidst soaring tensions with the U.S.

Data Source & Citation

Raw data for these calculations comes from the composite price index published by the UK Office for National Statistics (ONS). A composite index is created by combining price data from several different published sources, both official and unofficial. The Consumer Price Index, normally used to compute inflation, has only been tracked since 1988. All inflation calculations after 1988 use the Office for National Statistics' Consumer Price Index, except for 2017, which is based on The Bank of England's forecast.

You may use the following MLA citation for this page: “Inflation Rate in 2018 | UK Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 19 May. 2019,

Special thanks to QuickChart for providing downloadable chart images. is a reference website maintained by the Official Data Foundation.

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