$100 in 1951 is worth $400 in 1984,
because prices increased 299.6% over that period, an average of
4.29% a year.
$100 in 1951 has
the same buying power as
$400
in 1984
Detailed inflation statistics
Cumulative price change
299.6%
Average inflation rate
4.29% per year
Converted amount ($100 base)
$400
Price difference ($100 base)
$300
CPI in 1951
26
CPI in 1984
103.9
Inflation in 1951
7.88%
Inflation in 1984
4.32%
$100 in 1951 → 1984
$400
$100 in 1984 → 1951
$25.02
What happened to prices between 1951 and 1984
Between 1951 and 1984, the Consumer Price Index went from 26 to 103.9.
Cumulatively, prices increased 299.6%, which works out to an average of
4.29% per year. Put differently, a dollar in 1951 bought what
$0.25 buys in 1984: the 1951 dollar
lost 75.0% of its purchasing power over
these 33 years.
Consumer prices rose 7.9% in 1951, up sharply from 1950’s
1.3% and the fastest increase since 1947, as Korean War buying and a
defense spending surge hit an economy still adjusting to peacetime. Much
of the jump came early in the year, before the government stepped in: the
Office of Price Stabilization imposed a general ceiling on prices January
26, and the Wage Stabilization Board froze wages soon after, the broadest
peacetime controls since the war began that June. The year’s more lasting
change came in monetary policy. On March 4, the Treasury and the Federal
Reserve signed the Accord, ending the Fed’s wartime obligation to hold
down interest rates on government bonds and freeing the central bank to
fight inflation on its own terms for the first time since 1942, a shift
that would shape Fed independence for decades. Congress raised taxes that
October to help pay for the war: the Revenue Act of 1951, signed October
20, lifted individual and corporate income taxes along with a range of
excise taxes, the third increase in taxes since fighting began in Korea.
Consumer prices finished 1951 162.6% above their 1913
level. First-class postage held at 3 cents, and the minimum wage stayed at
75 cents an hour.
Every 1951 amount converts to 1984 at the same ratio, 4.00: $1,000 becomes
$3,996, and $10,000 becomes $39,962.
Amount in 1951
Value in 1984
$1.00
$4.00
$5.00
$19.98
$10.00
$39.96
$20.00
$79.92
$50.00
$200
$100
$400
$500
$1,998
$1,000
$3,996
$5,000
$19,981
$10,000
$39,962
$100,000
$399,615
$1,000,000
$3,996,154
Inflation by spending category, 1951–1984
Between 1951 and 1984, medical care rose the most, up 571.7%, while apparel rose the least, up 132.6%, against 299.6% for all items. The headline number is an average; here is what $100 of 1951
spending costs in 1984, by category:
Category
Avg. yearly inflation
$100 in 1951 →
All items (CPI-U)
4.29%
$400
Medical care
5.94%
$672
Transportation
4.52%
$430
Food
4.01%
$366
Apparel
2.59%
$233
Not shown because the BLS began these indexes after 1951: core (all items less food & energy) (1957–), energy (1957–), housing (1967–), recreation (1993–), education & communication (1993–).
Decade by decade: 1951 to 1984
Prices climbed fastest in the 1970s, averaging 7.82% a year, and slowest in the 1950s (1.45% a year). Each step below chains into the full 1951–1984 change:
Years
Avg. yearly inflation
Price change
$100 from 1951, at end
1951–1960
1.45%
13.8%
$114
1960–1970
2.74%
31.1%
$149
1970–1980
7.82%
112.4%
$317
1980–1984
5.97%
26.1%
$400
Year by year: CPI and the value of $100 from 1951
$100 from 1951 had already become $128 by
1967, on its way to $400 in 1984; each row shows the CPI, that
year's inflation rate, and the running value.
Within the span, inflation peaked at 13.5% in 1980, and prices fell 0.4% in 1955, the deepest deflation of the period.
Long periods are sampled every 2 years; the calculator above covers any pair of years.
The destination year: 1984
In 1984, prices rose 4.3% and $100 from 1951 had the buying
power of $400; the year's average CPI of 103.9 is the level
behind every 1984 figure on this page.
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.
MLA: “Inflation from 1951 to 1984: $100 is worth $400 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1951-to-1984/
APA: InflationCalculator.com. Inflation from 1951 to 1984. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1951-to-1984/