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Inflation calculator - US Dollar

$100 in 1980
$328.81 in 2021

The inflation rate in the United States between 1980 and 2021 was 228.81%, which translates into a total increase of $228.81. This means that 100 dollars in 1980 are equivalent to 328.81 dollars in 2021. In other words, the purchasing power of $100 in 1980 equals $328.81 in 2021. The average annual inflation rate between these periods was 2.95%.

Inflation timeline in the United States (1980 - 2021)

The following chart depicts the equivalence of $100 due to compound inflation and CPI changes. All values are equivalent in terms of purchasing power, which means that for each year the same goods or services could be bought with the indicated amount of money.

All calculations are performed in the local currency (USD) and using 6 decimal digits. Results show only up to 2 decimal digits to favour readability. Inflation data is provided by governments and international institutions on a monthly basis.

The following table contains relevant indicators:

Indicator Value
Cumulative inflation from 1980 to 2021 228.81%
Avg. Annual inflation from 1980 to 2021 2.95%
CPI 1980 82.41
CPI 2021 270.97

How to calculate the time value of money with inflation data?

There are several ways to calculate the time value of money. Depending on the data available, results can be obtained by using the Consumer Price Index (CPI) formula or the compound interest formula.

Using the CPI formula

When we have both the start and end years, we can use the following formula:

Valuet =Value0 ×
CPIt/CPI0

To obtain the values equivalent in buying power between 1980 and 2021, use the corresponding CPI values:

Value2021
=Value1980 ×
CPI2021/CPI1980
=$ 100 ×
270.97/82.41
$328.81

Alternative: Using the compound interest formula

Given that money changes with time as a result of an inflation rate that acts as compound interest, we can use the following formula: FV = PV × (1 + i)n, where:

  • FV: Future Value
  • PV: Present Value
  • i: Interest rate (inflation)
  • n: Number of times the interest is compounded (i.e. # of years)

In this case, the future value represents the final amount obtained after applying the inflation rate to our initial value. In other words, it indicates how much are $100 worth today. There are 41 years between 1980 and 2021 and the average inflation rate was 2.9458%. Therefore, we can resolve the formula like this:

Value2021
=PV × (1 + i)n
=$100 × (1 + 0.029458)41
$328.81

US inflation - Conversion table

Initial Value Equivalent value
$1 dollar in 1980 $3.29 dollars in 2021
$5 dollars in 1980 $16.44 dollars in 2021
$10 dollars in 1980 $32.88 dollars in 2021
$50 dollars in 1980 $164.41 dollars in 2021
$100 dollars in 1980 $328.81 dollars in 2021
$500 dollars in 1980 $1,644.07 dollars in 2021
$1,000 dollars in 1980 $3,288.14 dollars in 2021
$5,000 dollars in 1980 $16,440.68 dollars in 2021
$10,000 dollars in 1980 $32,881.35 dollars in 2021
$50,000 dollars in 1980 $164,406.77 dollars in 2021
$100,000 dollars in 1980 $328,813.53 dollars in 2021
$500,000 dollars in 1980 $1,644,067.65 dollars in 2021
$1,000,000 dollars in 1980 $3,288,135.3 dollars in 2021
Cumulative inflation 1980-2021 228.81%
Avg. annual inflation 1980-2021 2.95%
CPI 1980 82.41
CPI 2021 270.97

Value of Dollar over time (by year)

Period Value
1980 100
1981 110.33
1982 117.1
1983 120.86
1984 126.06
1985 130.53
1986 133.01
1987 137.88
1988 143.5
1989 150.43
1990 158.55
1991 165.26
1992 170.27
1993 175.3
1994 179.87
1995 184.91
1996 190.33
1997 194.78
1998 197.81
1999 202.13
2000 208.96
2001 214.87
2002 218.27
2003 223.23
2004 229.2
2005 236.98
2006 244.63
2007 251.6
2008 261.26
2009 260.33
2010 264.6
2011 272.96
2012 278.61
2013 282.69
2014 287.27
2015 287.61
2016 291.24
2017 297.45
2018 304.71
2019 310.23
2020 314.06
2021 328.81

All available years

Today's value of US dollars by year:

1913 | 1914 | 1915 | 1916 | 1917 | 1918 | 1919 | 1920 | 1921 | 1922 | 1923 | 1924 | 1925 | 1926 | 1927 | 1928 | 1929 | 1930 | 1931 | 1932 | 1933 | 1934 | 1935 | 1936 | 1937 | 1938 | 1939 | 1940 | 1941 | 1942 | 1943 | 1944 | 1945 | 1946 | 1947 | 1948 | 1949 | 1950 | 1951 | 1952 | 1953 | 1954 | 1955 | 1956 | 1957 | 1958 | 1959 | 1960 | 1961 | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |

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