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# Inflation Calculator

Inflation Calculator
\$
in
power as how much
in
\$20,000.00 in 1967
has the same buying power as
\$154,897.01 in 2020.

or

What cost \$20,000.00 in 1967
would cost \$154,897.01 in 2020

Total Inflation: 674.49%
Average Inflation: 12.73% per year
______________________________

## Calculator Use

Use this calculator to find the equivalent buying power over time for an amount in US dollars.

## Consumer Price Index (CPI) Inflation Calculations

Converting buying power from one year to another is done by a ratio calculation using the starting value and the CPI's for the years being compared. Converting from Year 1 to Year 2 we state: Dollars in Year 1 is to Dollars in Year 2 as CPI in Year 1 is to CPI in Year 2.

DollarsYear1 / DollarsYear2 = CPIYear1 / CPIYear2, solving for DollarsYear2

DollarsYear2 = DollarsYear1 * CPIYear2 / CPIYear1

Example: \$10.00 in 1980 has what buying power in 2010? From the table, CPI 2008 = 82.4 and CPI 2010 = 218.056. Converting we use:

DollarsYear2 = DollarsYear1 * CPIYear2 / CPIYear1 = \$10.00 * 218.056 / 82.4 = \$26.46. What cost \$10.00 in 1980 would cost \$26.46 in 2010.

Total inflation from Year 1 to Year 2 is a percentage change, positive or negative, and is a percentage change calculation.

Percentage change = ( ΔV / |V1| ) * 100 = ((V2 - V1) / |V1|) * 100

Calculating change from 1980 to 2010 using CPI:

Inflation = ( ΔV / |V1| ) * 100 = ((V2 - V1) / |V1|) * 100 = ((218.056 - 82.4) / |82.4|) * 100 = 164.63%.

Calculating change from 1980 to 2010 using known "buying power:"

Inflation = ( ΔV / |V1| ) * 100 = ((V2 - V1) / |V1|) * 100 = ((\$26.46 - \$10.00) / |\$10.00|) * 100 = 164.6%.

## Inflation Index : CPI Table

Year CPI
1913 9.9
1914 10.0
1915 10.1
1916 10.9
1917 12.8
1918 15.1
1919 17.3
1920 20.0
1921 17.9
1922 16.8
Year CPI
1923 17.1
1924 17.1
1925 17.5
1926 17.7
1927 17.4
1928 17.1
1929 17.1
1930 16.7
1931 15.2
1932 13.7
Year CPI
1933 13.0
1934 13.4
1935 13.7
1936 13.9
1937 14.4
1938 14.1
1939 13.9
1940 14.0
1941 14.7
1942 16.3
Year CPI
1943 17.3
1944 17.6
1945 18.0
1946 19.5
1947 22.3
1948 24.1
1949 23.8
1950 24.1
1951 26.0
1952 26.5
Year CPI
1953 26.7
1954 26.9
1955 26.8
1956 27.2
1957 28.1
1958 28.9
1959 29.1
1960 29.6
1961 29.9
1962 30.2
Year CPI
1963 30.6
1964 31.0
1965 31.5
1966 32.4
1967 33.4
1968 34.8
1969 36.7
1970 38.8
1971 40.5
1972 41.8
Year CPI
1973 44.4
1974 49.3
1975 53.8
1976 56.9
1977 60.6
1978 65.2
1979 72.6
1980 82.4
1981 90.9
1982 96.5
Year CPI
1983 99.6
1984 103.9
1985 107.6
1986 109.6
1987 113.6
1988 118.3
1989 124.0
1990 130.7
1991 136.2
1992 140.3
Year CPI
1993 144.5
1994 148.2
1995 152.4
1996 156.9
1997 160.5
1998 163.0
1999 166.6
2000 172.2
2001 177.1
2002 179.9
Year CPI
2003 184.0
2004 188.9
2005 195.3
2006 201.6
2007 207.342
2008 215.303
2009 214.537
2010 218.056
2011 224.939
2012 229.594
Year CPI
2013 232.945
2014 236.736
2015 237.017
2016 240.008
2017 245.120
2018 251.107
2019 255.657
2020 258.678
Last updated 2020-03-20.
The latest year uses monthly value from the latest month.

The US government has been calculating the CPI since 1913.  This calculator uses the yearly averages from the U.S. Bureau of Labor Statistics and when a full year of data is not available we use the latest month available in that year. You can find the most recently updated tables here and other consumer price index information and facts at the U.S. Bureau of Labor Statistics website along with their CPI Inflation Calculator.

Keep in mind that this is a cumulative total for urban areas and the government applies much more detail to the analysis of different aspects and sectors that affect the CPI.

Cite this content, page or calculator as:

Furey, Edward "Inflation Calculator"; CalculatorSoup, https://www.calculatorsoup.com - Online Calculators