Between 1915 and 1918, the Consumer Price Index went from 10.1 to 15.1.
Cumulatively, prices increased 49.5%, which works out to an average of
14.35% per year. Put differently, a dollar in 1915 bought what
$0.67 buys in 1918.
Common amounts: 1915 dollars in 1918
Amount in 1915
Value in 1918
$1.00
$1.50
$5.00
$7.48
$10.00
$14.95
$20.00
$29.90
$50.00
$74.75
$100
$150
$500
$748
$1,000
$1,495
$5,000
$7,475
$10,000
$14,950
$100,000
$149,505
$1,000,000
$1,495,050
Inflation by spending category, 1915–1918
The headline number is an average. Individual categories moved very differently over this
period. Here is what $100 of 1915 spending costs in 1918, by category:
Category
Avg. yearly inflation
$100 in 1915 →
All items (CPI-U)
14.35%
$150
Apparel
21.29%
$178
Food
18.64%
$167
Not shown because the BLS began these indexes after 1915: core (all items less food & energy) (1957–), energy (1957–), housing (1967–), medical care (1935–), transportation (1935–), recreation (1993–), education & communication (1993–).
MLA: “Inflation from 1915 to 1918: $100 is worth $150 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1915-to-1918/
APA: InflationCalculator.com. Inflation from 1915 to 1918. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1915-to-1918/