# Value of 1984 US Dollars today

\$20,900 in 1984

\$53,750.63 in 2021

The inflation rate in the United States between 1984 and today has been 157.18%, which translates into a total increase of \$32,850.63. This means that 20,900 dollars in 1984 are equivalent to 53,750.63 dollars in 2021. In other words, the purchasing power of \$20,900 in 1984 equals \$53,750.63 today. The average annual inflation rate has been 2.52%.

## Inflation timeline in the United States (1984-2021)

The following chart depicts the equivalence of \$20,900 throughout the years due to 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. Today's values were obtained by estimating figures from recent trends.

The following table contains relevant indicators:

Indicator Value
Total Inflation (1984-2021) 157.13%
Total Inflation* 157.18%
Annual inflation avg. (1984-2021) 2.59%
Annual inflation avg.* 2.52%
CPI 1984 42.74
CPI 2021 109.9
CPI today* 109.92
\$1 in 1984 \$2.57 in 2021

* Values extrapolated from the last official data to obtain today's values.

## How to calculate today's value of money after inflation?

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

#### Using the compound interest formula

Given that money changes with time as a result of an inflation rate that acts as a compound interest, the following formula can be used: 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 \$20,900 worth today. There are 37 years between 1984 and 2021 and the average inflation rate has been 2.517%. Therefore, we can resolve the formula like this:

FV = PV (1 + i)n = \$20900 * (1 + 0.03)37 = \$53,740.46

#### Using the CPI formula

When the CPI for both start and end years is known, the following formula can be used:

Final value = Initial value *
CPI final/CPI initial

In this case, the CPI in 1984 was 42.74 and the CPI today is 109.92. Therefore,

Final value = Initial value *
CPI final/CPI initial
= \$20,900 *
109.9/42.74
= \$53,740.46

### USA inflation - Conversion table

Initial Value Equivalent value
\$1 dollar in 1984 \$2.57 dollars today
\$5 dollars in 1984 \$12.86 dollars today
\$10 dollars in 1984 \$25.72 dollars today
\$50 dollars in 1984 \$128.59 dollars today
\$100 dollars in 1984 \$257.18 dollars today
\$500 dollars in 1984 \$1,285.9 dollars today
\$1,000 dollars in 1984 \$2,571.8 dollars today
\$5,000 dollars in 1984 \$12,859 dollars today
\$10,000 dollars in 1984 \$25,718 dollars today
\$50,000 dollars in 1984 \$128,590.02 dollars today
\$100,000 dollars in 1984 \$257,180.03 dollars today
\$500,000 dollars in 1984 \$1,285,900.17 dollars today
\$1,000,000 dollars in 1984 \$2,571,800.34 dollars today

Period Value
1984 20,900
1985 21,725.27
1986 22,550.54
1987 22,798.13
1988 23,809.08
1989 24,861.31
1990 26,016.68
1991 27,605.33
1992 28,451.23
1993 29,276.5
1994 30,081.15
1995 30,885.79
1996 31,669.79
1997 32,722.01
1998 33,279.07
1999 33,815.5
2000 34,723.3
2001 35,899.31
2002 36,456.37
2003 37,322.9
2004 38,024.38
2005 39,262.29
2006 40,603.36
2007 41,634.94
2008 43,334.18
2009 43,373.79
2010 44,554.13
2011 45,220.55
2012 46,560.16
2013 47,370.79
2014 48,082.17
2015 48,445.91
2016 48,799.33
2017 49,811.72
2018 50,862.3
2019 51,833.87
2020 53,018.34
2021 53,740.46
Today 53,750.63