UK inflation rate in 1812: 13.57%

UK Inflation Calculator


Inflation in 1812 and Its Effect on Pound Value

Purchasing power decreased by 13.57% in 1812 compared to 1811. On average, you would have to spend 13.57% more money in 1812 than in 1811 for the same item.

In other words, £1 in 1811 is equivalent in purchasing power to about £1.14 in 1812.

The 1811 inflation rate was -2.78%. The inflation rate in 1812 was 13.57%. The 1812 inflation rate is higher compared to the average inflation rate of 2.08% per year between 1812 and 2019.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 1812 was 15.90. It was 14.00 in the previous year, 1811. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation.

Inflation from 1811 to 1812
Average inflation rate 13.57%
Converted amount (£1 base) £1.14
Price difference (£1 base) £0.14
CPI in 1811 14.000
CPI in 1812 15.900
Inflation in 1811 -2.78%
Inflation in 1812 13.57%

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

How to Calculate Inflation Rate for £1, 1811 to 1812

This inflation calculator uses the following inflation rate formula:

CPI in 1812CPI in 1811
1811 GBP value
1812 GBP value

Then plug in historical CPI values. The UK CPI was 14 in the year 1811 and 15.9 in 1812:


£1 in 1811 has the same "purchasing power" or "buying power" as £1.14 in 1812.

To get the total inflation rate for the 1 years between 1811 and 1812, we use the following formula:

CPI in 1812 - CPI in 1811CPI in 1811
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

15.9 - 1414

News headlines from 1811

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

  • US colonists arrive on the Pacific coast at Cape Disappointment.
  • Seven provinces declare independence from Spain in the Venezuelan Declaration of Independence.
  • The British expeditionary army defeats the Dutch Indies in a battle.

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 1812 | 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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