# £1 in 1804 is worth £0.86 in 1804

£

## Value of £1 from 1805 to 1804

According to the Office for National Statistics composite price index, prices in 1804 are 13.74% lower than average prices since 1805. The British pound experienced an average inflation rate of 15.93% per year during this period, causing the real value of a pound to decrease.

In other words, £1 in 1805 is equivalent in purchasing power to about £0.86 in 1804.

The 1804 inflation rate was 2.73%. The inflation rate in 1805 was 15.93%. The 1805 inflation rate is higher compared to the average inflation rate of 2.10% per year between 1805 and 2020.

 Average inflation rate 15.93% Converted amount (£1 base) £0.86 Price difference (£1 base) £-0.14 CPI in 1805 13.100 CPI in 1804 11.300 Inflation in 1804 2.73% Inflation in 1805 15.93%

GBP Inflation since 1750
Annual Rate, the Office for National Statistics CPI

## How to Calculate Inflation Rate for £1, 1804 to 1805

Our calculations use the following inflation rate formula to calculate the change in value between 1804 and 1805:

CPI in 1804 CPI in 1805
×
1805 GBP value
=
1804 GBP value

Then plug in historical CPI values. The U.K. CPI was 13.1 in the year 1805 and 11.3 in 1804:

11.313.1
×
£1
=
£0.86

£1 in 1805 has the same "purchasing power" or "buying power" as £0.86 in 1804.

To get the total inflation rate for the 1 years between 1804 and 1805, we use the following formula:

CPI in 1804 - CPI in 1805CPI in 1805
×
100
=
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

11.3 - 13.113.1
×
100
=
-14%

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

• The British navy, led by Admiral Horatio Nelson, defeat the French and Spanish fleet in the Battle of Trafalgar. Admiral Nelson is killed during battle.
• The American West is crossed for the first time when an expedition, led by Lewis Clark, reaches the Pacific Ocean
• The Rocky Mountains are seen for the first time by Lewis and Clark on their expedition.

## 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: “£1 in 1805 → 1804 | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 30 May. 2020, https://www.officialdata.org/uk/inflation/1805?amount=1&endYear=1804.