U.S. inflation · 1917–1931
$100 in 1917 has the same buying power as
$119
in 1931
| Cumulative price change | 18.7% |
|---|---|
| Average inflation rate | 1.24% per year |
| Converted amount ($100 base) | $119 |
| Price difference ($100 base) | $18.75 |
| CPI in 1917 | 12.8 |
| CPI in 1931 | 15.2 |
| Inflation in 1917 | 17.43% |
| Inflation in 1931 | -8.98% |
| $100 in 1917 → 1931 | $119 |
| $100 in 1931 → 1917 | $84.21 |
Between 1917 and 1931, the Consumer Price Index went from 12.8 to 15.2. Cumulatively, prices increased 18.7%, which works out to an average of 1.24% per year. Put differently, a dollar in 1917 bought what $0.84 buys in 1931.
| Amount in 1917 | Value in 1931 |
|---|---|
| $1.00 | $1.19 |
| $5.00 | $5.94 |
| $10.00 | $11.87 |
| $20.00 | $23.75 |
| $50.00 | $59.37 |
| $100 | $119 |
| $500 | $594 |
| $1,000 | $1,187 |
| $5,000 | $5,937 |
| $10,000 | $11,875 |
| $100,000 | $118,750 |
| $1,000,000 | $1,187,500 |
The headline number is an average. Individual categories moved very differently over this period. Here is what $100 of 1917 spending costs in 1931, by category:
| Category | Avg. yearly inflation | $100 in 1917 → |
|---|---|---|
| All items (CPI-U) | 1.24% | $119 |
| Apparel | 0.61% | $109 |
| Food | -0.83% | $88.97 |
Not shown because the BLS began these indexes after 1917: core (all items less food & energy) (1957–), energy (1957–), housing (1967–), medical care (1935–), transportation (1935–), recreation (1993–), education & communication (1993–).
| Year | CPI | Inflation rate | $100 from 1917 |
|---|---|---|---|
| 1917 | 12.8 | 17.4% | $100 |
| 1918 | 15.1 | 18.0% | $118 |
| 1919 | 17.3 | 14.6% | $135 |
| 1920 | 20 | 15.6% | $156 |
| 1921 | 17.9 | -10.5% | $140 |
| 1922 | 16.8 | -6.1% | $131 |
| 1923 | 17.1 | 1.8% | $134 |
| 1924 | 17.1 | 0.0% | $134 |
| 1925 | 17.5 | 2.3% | $137 |
| 1926 | 17.7 | 1.1% | $138 |
| 1927 | 17.4 | -1.7% | $136 |
| 1928 | 17.1 | -1.7% | $134 |
| 1929 | 17.1 | 0.0% | $134 |
| 1930 | 16.7 | -2.3% | $130 |
| 1931 | 15.2 | -9.0% | $119 |
MLA: “Inflation from 1917 to 1931: $100 is worth $119 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1917-to-1931/
APA: InflationCalculator.com. Inflation from 1917 to 1931. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1917-to-1931/
Source: U.S. Bureau of Labor Statistics, CPI-U annual averages (series CUUR0000SA0; category indexes listed on the data sources page). See how these numbers are calculated.