# \$1 in 1820 → \$0.74 in 1831

## Inflation Calculator

\$

### U.S. Inflation Rate, \$1 from 1820 to 1831

According to the Bureau of Labor Statistics consumer price index, prices in 1831 are 25.64% lower than average prices since 1820. The U.S. dollar experienced an average deflation rate of -2.66% per year during this period, meaning the real value of a dollar increased.

In other words, \$1 in 1820 is equivalent in purchasing power to about \$0.74 in 1831, a difference of \$-0.26 over 11 years.

The 1820 inflation rate was -7.87%. The inflation rate in 1831 was -5.43%. The 1831 inflation rate is lower compared to the average inflation rate of 1.81% per year between 1831 and 2020.

 Cumulative price change -25.64% Average inflation rate -2.66% Converted amount (\$1 base) \$0.74 Price difference (\$1 base) \$-0.26 CPI in 1820 11.700 CPI in 1831 8.700 Inflation in 1820 -7.87% Inflation in 1831 -5.43%

USD Inflation since 1635
Annual Rate, the Bureau of Labor Statistics CPI

### Buying power of \$1 in 1820

This chart shows a calculation of buying power equivalence for \$1 in 1820 (price index tracking began in 1635).

For example, if you started with \$1, you would need to end with \$0.74 in order to "adjust" for inflation (sometimes refered to as "beating inflation").

According to the Bureau of Labor Statistics, each of these USD amounts below is equal in terms of what it could buy at the time:

Year Dollar Value Inflation Rate
1820 \$1.00 -7.87%
1821 \$0.97 -3.42%
1822 \$1.00 3.54%
1823 \$0.90 -10.26%
1824 \$0.83 -7.62%
1825 \$0.85 2.06%
1826 \$0.85 0.00%
1827 \$0.85 1.01%
1828 \$0.81 -5.00%
1829 \$0.79 -2.11%
1830 \$0.79 -1.08%
1831 \$0.74 -5.43%
1832 \$0.74 -1.15%
1833 \$0.72 -2.33%
1834 \$0.74 2.38%
1835 \$0.75 2.33%
1836 \$0.79 5.68%
1837 \$0.82 3.23%
1838 \$0.79 -3.12%
1839 \$0.79 0.00%
1840 \$0.74 -6.45%
1841 \$0.74 0.00%
1842 \$0.70 -5.75%
1843 \$0.63 -9.76%
1844 \$0.64 1.35%
1845 \$0.65 1.33%
1846 \$0.66 1.32%
1847 \$0.70 6.49%
1848 \$0.68 -3.66%
1849 \$0.66 -2.53%
1850 \$0.67 1.30%
1851 \$0.66 -1.28%
1852 \$0.66 0.00%
1853 \$0.66 0.00%
1854 \$0.72 9.09%
1855 \$0.74 3.57%
1856 \$0.73 -2.30%
1857 \$0.74 2.35%
1858 \$0.70 -5.75%
1859 \$0.71 1.22%
1860 \$0.71 0.00%
1861 \$0.75 6.02%
1862 \$0.86 14.77%
1863 \$1.08 24.75%
1864 \$1.34 24.60%
1865 \$1.39 3.82%
1866 \$1.36 -2.45%
1867 \$1.26 -6.92%
1868 \$1.21 -4.05%
1869 \$1.16 -4.23%
1870 \$1.12 -3.68%
1871 \$1.04 -6.87%
1872 \$1.04 0.00%
1873 \$1.03 -1.64%
1874 \$0.97 -5.00%
1875 \$0.94 -3.51%
1876 \$0.91 -2.73%
1877 \$0.90 -1.87%
1878 \$0.85 -4.76%
1879 \$0.85 0.00%
1880 \$0.87 2.00%
1881 \$0.87 0.00%
1882 \$0.87 0.00%
1883 \$0.86 -0.98%
1884 \$0.84 -2.97%
1885 \$0.83 -1.02%
1886 \$0.80 -3.09%
1887 \$0.81 1.06%
1888 \$0.81 0.00%
1889 \$0.79 -3.16%
1890 \$0.78 -1.09%
1891 \$0.78 0.00%
1892 \$0.78 0.00%
1893 \$0.77 -1.10%
1894 \$0.74 -4.44%
1895 \$0.72 -2.33%
1896 \$0.72 0.00%
1897 \$0.71 -1.19%
1898 \$0.71 0.00%
1899 \$0.71 0.00%
1900 \$0.72 1.20%
1901 \$0.73 1.19%
1902 \$0.74 1.18%
1903 \$0.75 2.33%
1904 \$0.76 1.14%
1905 \$0.75 -1.12%
1906 \$0.77 2.27%
1907 \$0.80 4.44%
1908 \$0.79 -2.13%
1909 \$0.78 -1.09%
1910 \$0.81 4.40%
1911 \$0.81 0.00%
1912 \$0.83 2.11%
1913 \$0.85 2.06%
1914 \$0.85 1.01%
1915 \$0.86 1.00%
1916 \$0.93 7.92%
1917 \$1.09 17.43%
1918 \$1.29 17.97%
1919 \$1.48 14.57%
1920 \$1.71 15.61%
1921 \$1.53 -10.50%
1922 \$1.44 -6.15%
1923 \$1.46 1.79%
1924 \$1.46 0.00%
1925 \$1.50 2.34%
1926 \$1.51 1.14%
1927 \$1.49 -1.69%
1928 \$1.46 -1.72%
1929 \$1.46 0.00%
1930 \$1.43 -2.34%
1931 \$1.30 -8.98%
1932 \$1.17 -9.87%
1933 \$1.11 -5.11%
1934 \$1.15 3.08%
1935 \$1.17 2.24%
1936 \$1.19 1.46%
1937 \$1.23 3.60%
1938 \$1.21 -2.08%
1939 \$1.19 -1.42%
1940 \$1.20 0.72%
1941 \$1.26 5.00%
1942 \$1.39 10.88%
1943 \$1.48 6.13%
1944 \$1.50 1.73%
1945 \$1.54 2.27%
1946 \$1.67 8.33%
1947 \$1.91 14.36%
1948 \$2.06 8.07%
1949 \$2.03 -1.24%
1950 \$2.06 1.26%
1951 \$2.22 7.88%
1952 \$2.26 1.92%
1953 \$2.28 0.75%
1954 \$2.30 0.75%
1955 \$2.29 -0.37%
1956 \$2.32 1.49%
1957 \$2.40 3.31%
1958 \$2.47 2.85%
1959 \$2.49 0.69%
1960 \$2.53 1.72%
1961 \$2.56 1.01%
1962 \$2.58 1.00%
1963 \$2.62 1.32%
1964 \$2.65 1.31%
1965 \$2.69 1.61%
1966 \$2.77 2.86%
1967 \$2.85 3.09%
1968 \$2.97 4.19%
1969 \$3.14 5.46%
1970 \$3.32 5.72%
1971 \$3.46 4.38%
1972 \$3.57 3.21%
1973 \$3.79 6.22%
1974 \$4.21 11.04%
1975 \$4.60 9.13%
1976 \$4.86 5.76%
1977 \$5.18 6.50%
1978 \$5.57 7.59%
1979 \$6.21 11.35%
1980 \$7.04 13.50%
1981 \$7.77 10.32%
1982 \$8.25 6.16%
1983 \$8.51 3.21%
1984 \$8.88 4.32%
1985 \$9.20 3.56%
1986 \$9.37 1.86%
1987 \$9.71 3.65%
1988 \$10.11 4.14%
1989 \$10.60 4.82%
1990 \$11.17 5.40%
1991 \$11.64 4.21%
1992 \$11.99 3.01%
1993 \$12.35 2.99%
1994 \$12.67 2.56%
1995 \$13.03 2.83%
1996 \$13.41 2.95%
1997 \$13.72 2.29%
1998 \$13.93 1.56%
1999 \$14.24 2.21%
2000 \$14.72 3.36%
2001 \$15.14 2.85%
2002 \$15.38 1.58%
2003 \$15.73 2.28%
2004 \$16.15 2.66%
2005 \$16.69 3.39%
2006 \$17.23 3.23%
2007 \$17.72 2.85%
2008 \$18.40 3.84%
2009 \$18.34 -0.36%
2010 \$18.64 1.64%
2011 \$19.23 3.16%
2012 \$19.62 2.07%
2013 \$19.91 1.46%
2014 \$20.23 1.62%
2015 \$20.26 0.12%
2016 \$20.51 1.26%
2017 \$20.95 2.13%
2018 \$21.47 2.49%
2019 \$21.85 1.76%
2020 \$22.11 1.18%*
* Compared to previous annual rate. Not final. See inflation summary for latest 12-month trailing value.
Click to show 5 more rows

### Inflation by Country

Inflation can also vary widely by country. For comparison, in the UK £1.00 in 1820 would be equivalent to £0.93 in 1831, an absolute change of £-0.07 and a cumulative change of -6.84%.

Compare these numbers to the US's overall absolute change of \$-0.26 and total percent change of -25.64%.

### Inflation by Spending Category

CPI is the weighted combination of many categories of spending that are tracked by the government. This chart shows the average rate of inflation for select CPI categories between 1820 and 1831.

Compare these values to the overall average of -2.66% per year:

Category Avg Inflation (%) Total Inflation (%) \$1 in 1820 → 1831
Food and beverages 0.00 0.00 1.00
Housing 0.00 0.00 1.00
Apparel 0.00 0.00 1.00
Transportation 0.00 0.00 1.00
Medical care 0.00 0.00 1.00
Recreation 0.00 0.00 1.00
Education and communication 0.00 0.00 1.00
Other goods and services 0.00 0.00 1.00

The graph below compares inflation in categories of goods over time. Click on a category such as "Food" to toggle it on or off:

For all these visualizations, it's important to note that not all categories may have been tracked since 1820. This table and charts use the earliest available data for each category.

### How to Calculate Inflation Rate for \$1, 1820 to 1831

This inflation calculator uses the following inflation rate formula:

CPI in 1831CPI in 1820
×
1820 USD value
=
1831 USD value

Then plug in historical CPI values. The U.S. CPI was 11.7 in the year 1820 and 8.7 in 1831:

8.711.7
×
\$1
=
\$0.74

\$1 in 1820 has the same "purchasing power" or "buying power" as \$0.74 in 1831.

To get the total inflation rate for the 11 years between 1820 and 1831, we use the following formula:

CPI in 1831 - CPI in 1820CPI in 1820
×
100
=
Cumulative inflation rate (11 years)

Plugging in the values to this equation, we get:

8.7 - 11.711.7
×
100
=
-26%

### News headlines from 1820

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

• The Astronomical Society of London, is founded, it is now known as the Royal Astronomical Society.
• Fabian Gottlieb von Bellingshausen and Mikhail Lazarev discover Antarctica.

### Data Source & Citation

Raw data for these calculations comes from the Bureau of Labor Statistics' (CPI), established in 1913. Inflation data from 1665 to 1912 is sourced from a historical study conducted by political science professor Robert Sahr at Oregon State University.

You may use the following MLA citation for this page: “\$1 in 1820 → 1831 | Inflation Calculator.” Official Inflation Data, Alioth Finance, 7 Apr. 2020, https://www.officialdata.org/us/inflation/1820?amount=1&endYear=1831.

Special thanks to QuickChart for providing downloadable chart images.

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 -25.64% Average inflation rate -2.66% Converted amount (\$1 base) \$0.74 Price difference (\$1 base) \$-0.26 CPI in 1820 11.700 CPI in 1831 8.700 Inflation in 1820 -7.87% Inflation in 1831 -5.43%