# £100 in 1803 is worth £10,347.67 today

£

## Why a pound today is worth only 1.0% of a pound in 1803

Updated: September 11, 2020

According to the Office for National Statistics composite price index, today's prices in 2020 are 10,247.67% higher than average prices since 1803. This means that a pound today only buys 0.97% of what it could buy in 1803. The British pound experienced an average inflation rate of 2.16% per year during this period, causing the real value of a pound to decrease.

In other words, £100 in 1803 is equivalent in purchasing power to about £10,347.67 in 2020, a difference of £10,247.67 over 217 years.

The 1803 inflation rate was -5.17%. The current year-over-year inflation rate (2019 to 2020) is now 1.50%1. If this number holds, £100 today will be equivalent in buying power to £101.50 next year.

 Cumulative price change 10,247.67% Average inflation rate 2.16% Converted amount (£100 base) £10,347.67 Price difference (£100 base) £10,247.67 CPI in 1803 11.000 CPI in 2020 1,138.243 Inflation in 1803 -5.17% Inflation in 2020 1.50%

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

## Buying power of £100 in 1803

This chart shows a calculation of buying power equivalence for £100 in 1803 (price index tracking began in 1750).

For example, if you started with £100, you would need to end with £10,347.67 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

When £100 is equivalent to £10,347.67 over time, that means that the "real value" of a single U.K. pound decreases over time. In other words, a pound will pay for fewer items at the store.

This effect explains how inflation erodes the value of a pound over time. By calculating the value in 1803 dollars, the chart below shows how £100 is worth less over 217 years.

According to the Office for National Statistics, each of these GBP amounts below is equal in terms of what it could buy at the time:

Pound inflation: 1803-2020
Year Pound Value Inflation Rate
1803 £100.00 -5.17%
1804 £102.73 2.73%
1805 £119.09 15.93%
1806 £114.55 -3.82%
1807 £111.82 -2.38%
1808 £116.36 4.07%
1809 £127.27 9.37%
1810 £130.91 2.86%
1811 £127.27 -2.78%
1812 £144.55 13.57%
1813 £148.18 2.52%
1814 £129.09 -12.88%
1815 £115.45 -10.56%
1816 £105.45 -8.66%
1817 £120.00 13.79%
1818 £120.00 0.00%
1819 £117.27 -2.27%
1820 £106.36 -9.30%
1821 £93.64 -11.97%
1822 £80.91 -13.59%
1823 £86.36 6.74%
1824 £93.64 8.42%
1825 £110.00 17.48%
1826 £103.64 -5.79%
1827 £97.27 -6.14%
1828 £94.55 -2.80%
1829 £93.64 -0.96%
1830 £90.00 -3.88%
1831 £99.09 10.10%
1832 £91.82 -7.34%
1833 £86.36 -5.94%
1834 £79.09 -8.42%
1835 £80.91 2.30%
1836 £90.00 11.24%
1837 £91.82 2.02%
1838 £92.73 0.99%
1839 £99.09 6.86%
1840 £100.91 1.83%
1841 £99.09 -1.80%
1842 £90.91 -8.26%
1843 £80.91 -11.00%
1844 £80.91 0.00%
1845 £84.55 4.49%
1846 £88.18 4.30%
1847 £99.09 12.37%
1848 £86.36 -12.84%
1849 £80.91 -6.32%
1850 £76.36 -5.62%
1851 £73.64 -3.57%
1852 £73.64 0.00%
1853 £80.91 9.88%
1854 £92.73 14.61%
1855 £95.45 2.94%
1856 £95.45 0.00%
1857 £90.91 -4.76%
1858 £82.73 -9.00%
1859 £81.82 -1.10%
1860 £84.55 3.33%
1861 £86.36 2.15%
1862 £84.55 -2.11%
1863 £81.82 -3.23%
1864 £80.91 -1.11%
1865 £81.82 1.12%
1866 £86.36 5.56%
1867 £91.82 6.32%
1868 £90.91 -0.99%
1869 £86.36 -5.00%
1870 £86.36 0.00%
1871 £87.27 1.05%
1872 £90.91 4.17%
1873 £94.55 4.00%
1874 £90.91 -3.85%
1875 £89.09 -2.00%
1876 £89.09 0.00%
1877 £88.18 -1.02%
1878 £86.36 -2.06%
1879 £82.73 -4.21%
1880 £85.45 3.30%
1881 £84.55 -1.06%
1882 £85.45 1.08%
1883 £84.55 -1.06%
1884 £82.73 -2.15%
1885 £80.00 -3.30%
1886 £79.09 -1.14%
1887 £78.18 -1.15%
1888 £79.09 1.16%
1889 £80.00 1.15%
1890 £80.00 0.00%
1891 £80.91 1.14%
1892 £80.91 0.00%
1893 £80.00 -1.12%
1894 £79.09 -1.14%
1895 £78.18 -1.15%
1896 £77.27 -1.16%
1897 £79.09 2.35%
1898 £79.09 0.00%
1899 £80.00 1.15%
1900 £83.64 4.55%
1901 £83.64 0.00%
1902 £83.64 0.00%
1903 £84.55 1.09%
1904 £84.55 0.00%
1905 £84.55 0.00%
1906 £84.55 0.00%
1907 £85.45 1.08%
1908 £85.45 0.00%
1909 £86.36 1.06%
1910 £87.27 1.05%
1911 £87.27 0.00%
1912 £90.00 3.13%
1913 £89.09 -1.01%
1914 £89.09 0.00%
1915 £100.00 12.24%
1916 £118.18 18.18%
1917 £148.18 25.38%
1918 £180.91 22.09%
1919 £199.09 10.05%
1920 £230.00 15.53%
1921 £210.00 -8.70%
1922 £180.91 -13.85%
1923 £170.00 -6.03%
1924 £169.09 -0.53%
1925 £169.09 0.00%
1926 £168.18 -0.54%
1927 £163.64 -2.70%
1928 £163.64 0.00%
1929 £161.82 -1.11%
1930 £157.27 -2.81%
1931 £150.91 -4.05%
1932 £147.27 -2.41%
1933 £143.64 -2.47%
1934 £143.64 0.00%
1935 £144.55 0.63%
1936 £145.45 0.63%
1937 £150.91 3.75%
1938 £152.73 1.20%
1939 £157.27 2.98%
1940 £183.64 16.76%
1941 £203.64 10.89%
1942 £218.18 7.14%
1943 £225.45 3.33%
1944 £231.82 2.82%
1945 £238.18 2.75%
1946 £245.45 3.05%
1947 £262.73 7.04%
1948 £282.73 7.61%
1949 £290.91 2.89%
1950 £300.00 3.13%
1951 £327.27 9.09%
1952 £357.27 9.17%
1953 £368.18 3.05%
1954 £375.45 1.98%
1955 £391.82 4.36%
1956 £411.82 5.10%
1957 £426.36 3.53%
1958 £440.00 3.20%
1959 £441.82 0.41%
1960 £446.36 1.03%
1961 £461.82 3.46%
1962 £481.82 4.33%
1963 £490.91 1.89%
1964 £507.27 3.33%
1965 £530.91 4.66%
1966 £551.82 3.94%
1967 £566.36 2.64%
1968 £592.73 4.65%
1969 £624.55 5.37%
1970 £664.55 6.40%
1971 £727.27 9.44%
1972 £779.09 7.13%
1973 £850.00 9.10%
1974 £986.36 16.04%
1975 £1,225.45 24.24%
1976 £1,428.18 16.54%
1977 £1,654.55 15.85%
1978 £1,791.82 8.30%
1979 £2,031.82 13.39%
1980 £2,397.27 17.99%
1981 £2,681.82 11.87%
1982 £2,912.73 8.61%
1983 £3,046.36 4.59%
1984 £3,198.18 4.98%
1985 £3,392.73 6.08%
1986 £3,508.18 3.40%
1987 £3,654.55 4.17%
1988 £3,833.64 4.90%
1989 £4,131.82 7.78%
1990 £4,522.73 9.46%
1991 £4,788.18 5.87%
1992 £4,967.27 3.74%
1993 £5,046.36 1.59%
1994 £5,168.18 2.41%
1995 £5,347.27 3.47%
1996 £5,476.36 2.41%
1997 £5,648.18 3.14%
1998 £5,841.82 3.43%
1999 £5,931.82 1.54%
2000 £6,107.27 2.96%
2001 £6,215.45 1.77%
2002 £6,319.09 1.67%
2003 £6,501.82 2.89%
2004 £6,695.45 2.98%
2005 £6,884.55 2.82%
2006 £7,104.55 3.20%
2007 £7,409.09 4.29%
2008 £7,704.55 3.99%
2009 £7,663.64 -0.53%
2010 £8,017.27 4.61%
2011 £8,434.55 5.20%
2012 £8,705.45 3.21%
2013 £8,970.00 3.04%
2014 £9,181.82 2.36%
2015 £9,272.73 0.99%
2016 £9,433.64 1.74%
2017 £9,771.82 3.58%
2018 £10,014.49 2.48%
2019 £10,194.75 1.80%
2020 £10,347.67 1.50%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.
Click to show 211 more rows

This conversion table shows various other 1803 amounts in today's pounds, based on the 10,247.67% change in prices:

Conversion Table: Value of a pound today
Initial value Equivalent value
£1 pound in 1803 £103.48 pounds today
£5 pounds in 1803 £517.38 pounds today
£10 pounds in 1803 £1,034.77 pounds today
£50 pounds in 1803 £5,173.83 pounds today
£100 pounds in 1803 £10,347.67 pounds today
£500 pounds in 1803 £51,738.33 pounds today
£1,000 pounds in 1803 £103,476.67 pounds today
£5,000 pounds in 1803 £517,383.35 pounds today
£10,000 pounds in 1803 £1,034,766.69 pounds today
£50,000 pounds in 1803 £5,173,833.46 pounds today
£100,000 pounds in 1803 £10,347,666.92 pounds today
£500,000 pounds in 1803 £51,738,334.58 pounds today
£1,000,000 pounds in 1803 £103,476,669.16 pounds today

## How to Calculate Inflation Rate for £100 since 1803

Our calculations use the following inflation rate formula to calculate the change in value between 1803 and today:

CPI today CPI in 1803
×
1803 GBP value
=
Today's value

Then plug in historical CPI values. The U.K. CPI was 11 in the year 1803 and 1138.2433607545 in 2020:

1138.243360754511
×
£100
=
£10,347.67

£100 in 1803 has the same "purchasing power" or "buying power" as £10,347.67 in 2020.

To get the total inflation rate for the 217 years between 1803 and 2020, we use the following formula:

CPI in 2020 - CPI in 1803CPI in 1803
×
100
=
Cumulative inflation rate (217 years)

Plugging in the values to this equation, we get:

1138.2433607545 - 1111
×
100
=
10,248%

## News headlines from 1803

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

• John Hawkins and Richard French, patent the reaping machine
• America makes the Louisiana Purchase.
• The Surrey Iron Railway opens in London
• The Louisiana Purchase is formally marked by the lowering of the French flag in New Orleans
• 1978 Sweden introduces a ban on aerosols.
• Over 30 countries ratify the Environmental Modification Convention, prohibiting weather warefare
• Karol Wojtyla, Polish Cardinal, is elected as the new pope, taking the name Pope John Paul II
• Iranian General Gholam Reza Azhari forms a military government placing Iran under military rule.
• 918 members of Peoples Temple cult, led by Jim Jones, were murdered or committed suicide in Jonestown Guyana.

## 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: “Value of 1803 pounds today | UK Inflation Calculator.” Official Inflation Data, Alioth Finance, 26 Sep. 2020, https://www.officialdata.org/uk/inflation/1803?amount=&startYear=&future_pct=.

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.

#### About the author

Ian Webster is an engineer and data expert based in San Mateo, California. He has worked for Google, NASA, and consulted for governments around the world on data pipelines and data analysis. Disappointed by the lack of clear resources on the impacts of inflation on economic indicators, Ian believes this website serves as a valuable public tool. Ian earned his degree in Computer Science from Dartmouth College.

 Cumulative price change 10,247.67% Average inflation rate 2.16% Converted amount (£100 base) £10,347.67 Price difference (£100 base) £10,247.67 CPI in 1803 11.000 CPI in 2020 1,138.243 Inflation in 1803 -5.17% Inflation in 2020 1.50%