Value of $100 in 1918, adjusted to 1948

What happened to prices between 1918 and 1948

Between 1918 and 1948, the Consumer Price Index went from 15.1 to 24.1. Cumulatively, prices increased 59.6%, which works out to an average of 1.57% per year. Put differently, a dollar in 1918 bought what $0.63 buys in 1948.

1918 brought the steepest annual price increase the CPI had recorded: consumer prices rose 18.0% for the year, edging out 1917’s already sharp 17.4% as the economy stayed at full wartime mobilization for most of the year. A first-class stamp cost 3 cents, up from 2 cents the previous November under the War Revenue Act’s wartime tax increases. The war itself ended on November 11, when Germany signed an armistice with the Allied powers after more than four years of fighting in Europe, but the inflation built up over a year and a half of mobilization did not disappear along with the fighting. The bigger public health story that year was the influenza pandemic that reached the U.S. in a mild spring wave and then returned that fall in a far deadlier form, eventually killing roughly 675,000 Americans, more than the country’s combat losses in the war. It hit factories, docks, and shops alongside households, adding disruption to an economy already strained by wartime demand. Prices would keep climbing even after the armistice, into the postwar surge of 1919.

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The destination year: 1948

Consumer prices rose 8.1% in 1948, down slightly from 1947’s 14.4% but still the second straight year of sharp postwar inflation now that wartime price controls were fully gone. Congress moved to stabilize a different economy that April, passing the Economic Cooperation Act to fund the plan Secretary of State George Marshall had proposed the year before: more than $13 billion over four years to rebuild Western Europe and counter Soviet influence. The Cold War turned tense closer to the plan’s target that June, when Soviet forces cut off road and rail access to the Western-controlled sectors of Berlin. American and British aircraft responded almost immediately with an airlift of food, fuel, and supplies that would keep the city running for nearly a year. Domestic politics produced its own upset that November: nearly every poll and pundit had predicted a Republican win, but Harry Truman defeated New York Governor Thomas Dewey, handing the Chicago Tribune its famously wrong “Dewey Defeats Truman” headline. Consumer prices finished the year 143.4% above their 1913 level and 40.9% above 1929’s pre-Depression peak. First-class postage held at 3 cents, and the minimum wage stayed at 40 cents an hour.

More about inflation in 1948 →