U.K. inflation rate in 1909: 1.06%

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Inflation in 1909 and its effect on pound value

£1 in 1908 is equivalent in purchasing power to about £1.01 in 1909. The pound had an average inflation rate of 1.06% per year between 1908 and 1909, producing a cumulative price increase of 1.06%. Purchasing power decreased by 1.06% in 1909 compared to 1908. On average, you would have to spend 1.06% more money in 1909 than in 1908 for the same item.

This means that prices in 1909 are 1.01 times as high as average prices since 1908, according to the Office for National Statistics composite price index.

The inflation rate in 1908 was 0.00%. The inflation rate in 1909 was 1.06%. The 1909 inflation rate is lower compared to the average inflation rate of 4.45% per year between 1909 and 2024.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 1909 was 9.50. It was 9.40 in the previous year, 1908. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation.

⌃
Inflation from 1908 to 1909
Average inflation rate1.06%
Converted amount
£1 base		£1.01
Price difference
£1 base		£0.01
CPI in 19089.400
CPI in 19099.500
Inflation in 19080.00%
Inflation in 19091.06%
£1 in 1908£1.01 in 1909
Recent GBP inflation
Annual Rate, the Office for National Statistics CPI
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How to calculate inflation rate for £1, 1908 to 1909

Our calculations use the following inflation rate formula to calculate the change in value between 1908 and 1909:

CPI in 1909 CPI in 1908
×
1908 GBP value
=
1909 GBP value

Then plug in historical CPI values. The U.K. CPI was 9.4 in the year 1908 and 9.5 in 1909:

9.59.4
×
£1
=
£1.01

£1 in 1908 has the same "purchasing power" or "buying power" as £1.01 in 1909.

To get the total inflation rate for the 1 years between 1908 and 1909, we use the following formula:

CPI in 1909 - CPI in 1908CPI in 1908
×
100
=
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

9.5 - 9.49.4
×
100
=
1%

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 the current year, which is based on The Bank of England's forecast.

You may use the following MLA citation for this page: “Inflation Rate in 1909 | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 12 Apr. 2024, https://www.officialdata.org/UK-inflation-rate-in-1909.

Special thanks to QuickChart for their chart image API, which is used for chart downloads.

in2013dollars.com is a reference website maintained by the Official Data Foundation.

Ian Webster

About the author

Ian Webster is an engineer and data expert based in San Mateo, California. He has worked for Google, NASA, and consulted for governments around the world on data pipelines and data analysis. Disappointed by the lack of clear resources on the impacts of inflation on economic indicators, Ian believes this website serves as a valuable public tool. Ian earned his degree in Computer Science from Dartmouth College.

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Inflation from 1908 to 1909
Average inflation rate1.06%
Converted amount
£1 base		£1.01
Price difference
£1 base		£0.01
CPI in 19089.400
CPI in 19099.500
Inflation in 19080.00%
Inflation in 19091.06%
£1 in 1908£1.01 in 1909