UK inflation rate in 1866: 5.56%

UK Inflation Calculator


Inflation in 1866 and Its Effect on Pound Value

Purchasing power decreased by 5.56% in 1866 compared to 1865. On average, you would have to spend 5.56% more money in 1866 than in 1865 for the same item.

In other words, £1 in 1865 is equivalent in purchasing power to about £1.06 in 1866.

The 1865 inflation rate was 1.12%. The inflation rate in 1866 was 5.56%. The 1866 inflation rate is higher compared to the average inflation rate of 3.17% per year between 1866 and 2019.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 1866 was 9.50. It was 9.00 in the previous year, 1865. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation.

Inflation from 1865 to 1866
Average inflation rate 5.56%
Converted amount (£1 base) £1.06
Price difference (£1 base) £0.06
CPI in 1865 9.000
CPI in 1866 9.500
Inflation in 1865 1.12%
Inflation in 1866 5.56%

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

How to Calculate Inflation Rate for £1, 1865 to 1866

This inflation calculator uses the following inflation rate formula:

CPI in 1866CPI in 1865
1865 GBP value
1866 GBP value

Then plug in historical CPI values. The UK CPI was 9 in the year 1865 and 9.5 in 1866:


£1 in 1865 has the same "purchasing power" or "buying power" as £1.06 in 1866.

To get the total inflation rate for the 1 years between 1865 and 1866, we use the following formula:

CPI in 1866 - CPI in 1865CPI in 1865
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

9.5 - 99

News headlines from 1865

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

  • America abolishes slavery after Congress passes the 13th Amendment.
  • John Wilkes Booth assassinates President Abraham Lincoln at Ford's Theater, in Washington.
  • The New York Stock Exchange opens its first permanent headquarters at 10-12 Broad Street.
  • Columbia, South Carolina burns during the American Civil War.

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 1866 | 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.

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