£1 in 1804 is equivalent in purchasing power to about £1.16 in 1805. The pound had an average inflation rate of 15.93% per year between 1804 and 1805, producing a cumulative price increase of 15.93%. Purchasing power decreased by 15.93% in 1805 compared to 1804. On average, you would have to spend 15.93% more money in 1805 than in 1804 for the same item.

This means that prices in 1805 are 1.16 times as high as average prices since 1804, according to the Office for National Statistics composite price index.

The inflation rate in 1804 was 2.73%. The inflation rate in 1805 was 15.93%. The 1805 inflation rate is higher compared to the average inflation rate of 2.16% per year between 1805 and 2024.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 1805 was 13.10. It was 11.30 in the previous year, 1804. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation.

⌃

Average inflation rate | 15.93% |

Converted amount £1 base | £1.16 |

Price difference £1 base | £0.16 |

CPI in 1804 | 11.300 |

CPI in 1805 | 13.100 |

Inflation in 1804 | 2.73% |

Inflation in 1805 | 15.93% |

£1 in 1804 | £1.16 in 1805 |

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

CPI in 1805 CPI in 1804

×

1804 GBP value

=

1805 GBP value

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

13.111.3

×

£1

=

£1 in 1804 has the same "purchasing power" or "buying power" as £1.16 in 1805.

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

CPI in 1805 - CPI in 1804CPI in 1804

×

100

=

Plugging in the values to this equation, we get:

13.1 - 11.311.3

×

100

=

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 the current year, which is based on The Bank of England's forecast.

You may use the following MLA citation for this page: “Inflation Rate in 1805 | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 4 Oct. 2024, https://www.officialdata.org/UK-inflation-rate-in-1805.

Special thanks to QuickChart for their chart image API, which is used for chart downloads.

in2013dollars.com is a reference website maintained by the Official Data Foundation.

Average inflation rate | 15.93% |

Converted amount £1 base | £1.16 |

Price difference £1 base | £0.16 |

CPI in 1804 | 11.300 |

CPI in 1805 | 13.100 |

Inflation in 1804 | 2.73% |

Inflation in 1805 | 15.93% |

£1 in 1804 | £1.16 in 1805 |