$100 in 1984 is worth $261 in 2021,
because prices increased 160.8% over that period, an average of
2.62% a year.
$100 in 1984 has
the same buying power as
$261
in 2021
Detailed inflation statistics
Cumulative price change
160.8%
Average inflation rate
2.62% per year
Converted amount ($100 base)
$261
Price difference ($100 base)
$161
CPI in 1984
103.9
CPI in 2021
270.97
Inflation in 1984
4.32%
Inflation in 2021
4.70%
$100 in 1984 → 2021
$261
$100 in 2021 → 1984
$38.34
What happened to prices between 1984 and 2021
Between 1984 and 2021, the Consumer Price Index went from 103.9 to 270.97.
Cumulatively, prices increased 160.8%, which works out to an average of
2.62% per year. Put differently, a dollar in 1984 bought what
$0.38 buys in 2021: the 1984 dollar
lost 61.7% of its purchasing power over
these 37 years.
1984 was the year the recovery became a boom. Real GDP grew 7.2%, the
fastest calendar-year growth since 1951, as the tax cuts passed in 1981
combined with falling interest rates and rebuilding consumer confidence.
Unemployment, which had topped 10.8% just two years earlier, fell below
7.5%. Inflation ticked up to 4.3% from 3.2% the year before, but nothing
close to a return of the 1970s wage-price spiral: the Federal Reserve under
Paul Volcker kept policy tight enough to hold the line while growth ran hot.
The strength of the expansion, branded “Morning in America” in President
Reagan’s reelection campaign, carried him to a 49-state landslide over
Walter Mondale that November, at the time the widest electoral-vote margin
in U.S. history. For households, the numbers behind the slogan were
concrete: median income rose to about $22,400, and a gallon of gas cost
$1.13, roughly what it had cost three years earlier even as wages kept
climbing. The contrast with 1980, when 13.5% inflation and interest rates
near 20% had defined the economy, could not have been sharper.
Every 1984 amount converts to 2021 at the same ratio, 2.61: $1,000 becomes
$2,608, and $10,000 becomes $26,080.
Amount in 1984
Value in 2021
$1.00
$2.61
$5.00
$13.04
$10.00
$26.08
$20.00
$52.16
$50.00
$130
$100
$261
$500
$1,304
$1,000
$2,608
$5,000
$13,040
$10,000
$26,080
$100,000
$260,799
$1,000,000
$2,607,988
Inflation by spending category, 1984–2021
Between 1984 and 2021, medical care rose the most, up 391.8%, while apparel rose the least, up 18.5%, against 160.8% for all items. The headline number is an average; here is what $100 of 1984
spending costs in 2021, by category:
Category
Avg. yearly inflation
$100 in 1984 →
All items (CPI-U)
2.62%
$261
Medical care
4.40%
$492
Housing
2.73%
$271
Food
2.71%
$269
Core (all items less food & energy)
2.67%
$265
Energy
2.35%
$236
Transportation
2.18%
$222
Apparel
0.46%
$119
Not shown because the BLS began these indexes after 1984: recreation (1993–), education & communication (1993–).
Decade by decade: 1984 to 2021
Prices climbed fastest in the 2020s, averaging 4.70% a year, and slowest in the 2010s (1.73% a year). Each step below chains into the full 1984–2021 change:
Years
Avg. yearly inflation
Price change
$100 from 1984, at end
1984–1990
3.90%
25.8%
$126
1990–2000
2.80%
31.8%
$166
2000–2010
2.39%
26.6%
$210
2010–2020
1.73%
18.7%
$249
2020–2021
4.70%
4.7%
$261
Year by year: CPI and the value of $100 from 1984
$100 from 1984 had already become $173 by
2002, on its way to $261 in 2021; each row shows the CPI, that
year's inflation rate, and the running value.
Within the span, inflation peaked at 5.4% in 1990, and prices fell 0.4% in 2009, the deepest deflation of the period.
Long periods are sampled every 2 years; the calculator above covers any pair of years.
The destination year: 2021
In 2021, prices rose 4.7% and $100 from 1984 had the buying
power of $261; the year's average CPI of 270.97 is the level
behind every 2021 figure on this page.
2021 was the year inflation stopped being background noise. Consumer prices
rose 4.7% on average for the year, and the pace kept building as the months
went on: by December, the 12-month rate had reached 7.0%, the highest since
1982. The proximate cause was a supply chain that could not keep up with a
fast-reopening economy. A global semiconductor shortage choked new car
production and pushed used vehicle prices up by more than a third, the
single largest line item in the year’s inflation math. Lumber, appliances,
and shipping capacity told versions of the same story: demand snapped back
faster than factories, ports, and truckers could handle it. Washington added
fuel in March with the $1.9 trillion American Rescue Plan, on top of the
relief already in the pipeline since 2020. For most of the year, the Federal
Reserve called the price surge “transitory,” a temporary reopening effect
expected to fade on its own, and held its policy rate near zero. By
November, with inflation still climbing, the Fed reversed course and began
winding down its bond purchases, the first step toward the rate hikes that
would follow in 2022. Gas averaged $3.01 a gallon for the year, up from
about $2.17 in 2020, while the federal minimum wage held at $7.25,
unchanged since 2009. In hindsight, 2021 reads as the hinge year: the point
where “transitory” inflation became the multi-year fight the Fed spent the
next two years trying to win.
MLA: “Inflation from 1984 to 2021: $100 is worth $261 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1984-to-2021/
APA: InflationCalculator.com. Inflation from 1984 to 2021. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1984-to-2021/