Value of $100 in 1916, adjusted to 1918

What happened to prices between 1916 and 1918

Between 1916 and 1918, the Consumer Price Index went from 10.9 to 15.1. Cumulatively, prices increased 38.5%, which works out to an average of 17.70% per year. Put differently, a dollar in 1916 bought what $0.72 buys in 1918.

1916 was when World War I first showed up clearly in American price tags. Consumer prices rose 7.9% for the year, easily the sharpest increase since the Bureau of Labor Statistics’ CPI history begins in 1913, as factories ran flat out to fill steel, munitions, and food orders from Britain and France. Railroad workers felt the squeeze from rising living costs enough to threaten a nationwide strike; Congress headed it off in September with the Adamson Act, which set an eight-hour standard workday for interstate rail employees, the first federal law of its kind covering private-sector hours. Washington was also preparing more directly for war: the National Defense Act, signed in June, expanded the Army and National Guard and funded new government-owned munitions plants, adding another source of demand to an economy already running hot. Woodrow Wilson won re-election in November largely on having kept the country out of the fighting so far, a promise that would not survive the following spring. A first-class stamp still cost 2 cents, one of the few prices that had not yet moved.

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The destination year: 1918

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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