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# UK inflation rate in 1801: 11.85%

### Inflation in 1801 and Its Effect on Pound Value

Purchasing power decreased by 11.85% in 1801 compared to 1800. On average, you would have to spend 11.85% more money in 1801 than in 1800 for the same item.

In other words, £1 in 1800 is equivalent in purchasing power to about £1.12 in 1801.

The 1800 inflation rate was 36.36%. The inflation rate in 1801 was 11.85%. The 1801 inflation rate is higher compared to the average inflation rate of 2.00% per year between 1801 and 2019.

Inflation rate is calculated by change in the composite price index (CPI). The CPI in 1801 was 15.10. It was 13.50 in the previous year, 1800. The difference in CPI between the years is used by the Office for National Statistics to officially determine inflation.

 Average inflation rate 11.85% Converted amount (£1 base) £1.12 Price difference (£1 base) £0.12 CPI in 1800 13.500 CPI in 1801 15.100 Inflation in 1800 36.36% Inflation in 1801 11.85%

### How to Calculate Inflation Rate for £1, 1800 to 1801

This inflation calculator uses the following inflation rate formula:

CPI in 1801CPI in 1800
×
1800 GBP value
=
1801 GBP value

Then plug in historical CPI values. The UK CPI was 13.5 in the year 1800 and 15.1 in 1801:

15.113.5
×
£1
=
£1.12

£1 in 1800 has the same "purchasing power" or "buying power" as £1.12 in 1801.

To get the total inflation rate for the 1 years between 1800 and 1801, we use the following formula:

CPI in 1801 - CPI in 1800CPI in 1800
×
100
=
Cumulative inflation rate (1 years)

Plugging in the values to this equation, we get:

15.1 - 13.513.5
×
100
=
12%

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

• First session of Congress held at under-construction Capitol building in Washington D.C.
• First cowpox vaccination (for smallpox prevention) in the United States. The vaccine was given by Dr Benjamin Waterhouse to his son.
• The free African American community of Philadelphia submits its first petition to US Congress for the abolition of slavery.
• Barnaba Niccoclo Maria Luigi Chiaramonti elected pope, taking the name Pope Pius VII.
• A Smallpox vaccine is invented by Doctor Benjamin Waterhouse leading to the first immunization against the disease.
• Congress holds its first session in the, at the time, still incomplete Capitol building in Washington D.C.
• The French army defeats the Turks at Helipolis, after which they advanced on to Cairo.

### 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 1801 | UK Inflation Calculator.” U.S. Official Inflation Data, Alioth Finance, 15 Sep. 2019, https://www.officialdata.org/UK-inflation-rate-in-1801.