UK inflation rate in 1811: -2.78%

UK Inflation Calculator


Inflation in 1811 and Its Effect on Pound Value

Purchasing power increased by 2.78% in 1811 compared to 1810. On average, you would have to spend 2.78% less money in 1811 than in 1810 for the same item. This is an example of deflation.

In other words, £1 in 1810 is equivalent in purchasing power to about £0.97 in 1811.

The 1810 inflation rate was 2.86%. The inflation rate in 1811 was -2.78%. The 1811 inflation rate is lower compared to the average inflation rate of 2.13% per year between 1811 and 2019.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 1811 was 14.00. It was 14.40 in the previous year, 1810. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation. Because the 1811 CPI is less than 1810 CPI, negative inflation (also known as deflation) has occurred.

Inflation from 1810 to 1811
Average inflation rate -2.78%
Converted amount (£1 base) £0.97
Price difference (£1 base) £-0.03
CPI in 1810 14.400
CPI in 1811 14.000
Inflation in 1810 2.86%
Inflation in 1811 -2.78%

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

How to Calculate Inflation Rate for £1, 1810 to 1811

This inflation calculator uses the following inflation rate formula:

CPI in 1811CPI in 1810
1810 GBP value
1811 GBP value

Then plug in historical CPI values. The UK CPI was 14.4 in the year 1810 and 14 in 1811:


£1 in 1810 has the same "purchasing power" or "buying power" as £0.97 in 1811.

To get the total inflation rate for the 1 years between 1810 and 1811, we use the following formula:

CPI in 1811 - CPI in 1810CPI in 1810
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

14 - 14.414.4

News headlines from 1810

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

  • Buenos Aires citizens discharge the Spanish Viceroy, Cisneros in the May Revolution.
  • Grito de Dolores was issued, calling for the end of Spanish rule in Mexico. The event is celebrated as Mexican Independence Day
  • Andreas Hofer a Tyrolean patriot and the leader of a rebellion against Napoleon, is executed.

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 1811 | UK Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 19 Apr. 2019,

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

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