£100 in 1770 → £12,214.52 in 2005

UK Inflation Calculator

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UK Inflation Rate, £100 in 1770 to 2005

According to the Office for National Statistics composite price index, the pound experienced an average inflation rate of 2.07% per year. Prices in 2005 are 12114.5% higher than prices in 1770.

In other words, £100 in 1770 is equivalent in purchasing power to £12,214.52 in 2005, a difference of £12,114.52 over 235 years.

The inflation rate in 2005 was 2.82%.

Inflation from 1770 to 2005
Cumulative price change 12114.52%
Average inflation rate 2.07%
Converted amount (£100 base) £12,214.52
Price difference (£100 base) £12,114.52
CPI in 1770 6.2
CPI in 2005 757.3


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


How to calculate the inflation rate for £100, 1770 to 2005

This inflation calculator uses the following inflation rate formula:

CPI in 2005 / CPI in 1770 * 1770 GBP value = 2005 GBP value

Then plug in historical CPI values. The UK CPI was 6.2 in the year 1770 and 757.3 in 2005:

757.3 / 6.2 * £100 = £12,214.52

£100 in 1770 has the same "purchasing power" or "buying power" as £12,214.52 in 2005.


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: “£100 in 1770 → 2005 | UK Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 18 Jun. 2018, https://www.officialdata.org/1770-GBP-in-2005?amount=100.


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