UK inflation rate in 2009: -0.53%

UK Inflation Calculator

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Inflation since 2009 and its effect on pound value

The composite price index (CPI) in 2009 was 843. It was 847.5 in the previous year. This change in CPI is used by the Office for National Statistics to calculate inflation.

According to the Office for National Statistics composite price index, the pound experienced an average inflation rate of 2.98% per year. Prices in 2018 are 30.3% higher than prices in 2009.

In other words, £100 in 2009 is equivalent in purchasing power to £130.28 in 2018, a difference of £30.28 over 9 years.

The current inflation rate is now 2.20%1. If this number holds, £100 today will be equivalent to £102.20 next year.

Inflation from 2009 to 2018
Cumulative price change 30.28%
Average inflation rate 2.98%
Converted amount (£100 base) £130.28
Price difference (£100 base) £30.28
CPI in 2009 843
CPI in 2018 1098.27186


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


How to calculate the inflation rate for £100 since 2009

This inflation calculator uses the following inflation rate formula:

CPI in 2018 / CPI in 2009 * 2009 GBP value = 2018 GBP value

Then plug in historical CPI values. The UK CPI was 843 in the year 2009 and 1098.27186 in 2018:

1098.27186 / 843 * £100 = £130.28

£100 in 2009 has the same "purchasing power" or "buying power" as £130.28 in 2018.


Here are calculations of buying power over time for £100 in 2009 (price index tracking began in 1750). Each of these GBP amounts below is equivalent in terms of what it could buy at the time:
Year GBP Value Inflation Rate
2009 £100.00 -0.53%
2010 £104.61 4.61%
2011 £110.06 5.20%
2012 £113.59 3.21%
2013 £117.05 3.04%
2014 £119.81 2.36%
2015 £121.00 0.99%
2016 £123.05 1.70%
2017 £127.48 3.59%
2018 £130.28 2.20%*
* Not final. See inflation summary for latest details.

News headlines from 2009

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

  • Barack Obama is inaugurated as the 44th President of the United States.
  • An arrest warrant is issued for Omar Hassan al-Bashir, Sudanese President, by International Criminal Court, for war crimes and crimes against humanity. This is the first time a sitting head of state was indicted.
  • Chrysler, an automotive company, files for bankruptcy.

Inflation Data Source

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 2009 | UK Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 21 Jun. 2018, https://www.officialdata.org/UK-inflation-rate-in-2009.


» Read more about inflation.