UK inflation rate in 1791: 0.00%

UK Inflation Calculator


Inflation in 1791 and Its Effect on Pound Value

Purchasing power decreased by 0.00% in 1791 compared to 1790. On average, you would have to spend 0.00% more money in 1791 than in 1790 for the same item.

In other words, £1 in 1790 is equivalent in purchasing power to about £1 in 1791.

The 1790 inflation rate was 1.35%. The inflation rate in 1791 was 0.00%. The 1791 inflation rate is lower compared to the average inflation rate of 2.22% per year between 1791 and 2019.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 1791 was 7.50. It was 7.50 in the previous year, 1790. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation.

Inflation from 1790 to 1791
Average inflation rate 0.00%
Converted amount (£1 base) £1
Price difference (£1 base) £0.00
CPI in 1790 7.500
CPI in 1791 7.500
Inflation in 1790 1.35%
Inflation in 1791 0.00%

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

How to Calculate Inflation Rate for £1, 1790 to 1791

This inflation calculator uses the following inflation rate formula:

CPI in 1791CPI in 1790
1790 GBP value
1791 GBP value

Then plug in historical CPI values. The UK CPI was 7.5 in the year 1790 and 7.5 in 1791:


£1 in 1790 has the same "purchasing power" or "buying power" as £1 in 1791.

To get the total inflation rate for the 1 years between 1790 and 1791, we use the following formula:

CPI in 1791 - CPI in 1790CPI in 1790
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

7.5 - 7.57.5

News headlines from 1790

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

  • George Washington, delivers his first State of the Union address as president.
  • The Swedish navy capture a third of the Russian fleet in the Second Battle of Svensksund.
  • Columbia Rediviva, returns to Boston, having become the first American ship to circumnavigate the world.
  • Turkish fortress of Izmail, thought to be impenetrable, is captured by the Russians under the command of Suvorov.

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 1791 | UK Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 18 Apr. 2019,

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

» Read more about inflation and investment.