UK inflation rate in 1900: 4.55%

UK Inflation Calculator


UK Inflation Rate, 1900-2018 (£100)

The composite price index (CPI) in 1900 was 9.2. the Office for National Statistics uses this CPI value to track inflation on a monthly basis.

According to the Office for National Statistics composite price index, the pound experienced an average inflation rate of 4.13% per year. Prices in 2018 are 11819.5% higher than prices in 1900.

In other words, £100 in the year 1900 is equivalent in purchasing power to £11,919.47 in 2018, a difference of £11,819.47 over 118 years.

Compared to last year's annual rate, the inflation rate in 2018 is now 3.10%1. If this number holds, £100 today would be equivalent to £103.10 next year.

Inflation from 1900 to 2018
Cumulative price change 11819.47%
Average inflation rate 4.13%
Price difference (£100 base) £11,819.47
CPI in 1900 9.2
CPI in 2018 1096.59148

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

How to calculate the inflation rate for £100 since 1900

This inflation calculator uses the following inflation rate formula:

CPI in 2018 / CPI in 1900 * 1900 GBP value = 2018 GBP value

Then plug in historical CPI values. The UK CPI was 9.2 in the year 1900 and 1096.59148 in 2018:

1096.59148 / 9.2 * £100 = £11,919.47

£100 in 1900 has the same "purchasing power" as £11,919.47 in 2018.

News headlines from 1900

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

  • Britain establishes the protectorates of Northern Nigeria and Southern Nigeria.
  • America announces the Open Door Policy to promote trade with China.
  • The US Congress passes the Currency Act, establishing the gold standard.
  • Dutch botanist and geneticist Hugo de Vries rediscovers Mendel's law of genetics
  • Under pressure from Japan, Korea denies Russia access to Masampo Port, leading to a war between Russia and Japan.

Inflation Data Source

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 1900 | UK Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 25 May. 2018,

» Read more about inflation.