U.S. inflation · 1917–1975
$100 in 1917 has the same buying power as
$420
in 1975
| Cumulative price change | 320.3% |
|---|---|
| Average inflation rate | 2.51% per year |
| Converted amount ($100 base) | $420 |
| Price difference ($100 base) | $320 |
| CPI in 1917 | 12.8 |
| CPI in 1975 | 53.8 |
| Inflation in 1917 | 17.43% |
| Inflation in 1975 | 9.13% |
| $100 in 1917 → 1975 | $420 |
| $100 in 1975 → 1917 | $23.79 |
Between 1917 and 1975, the Consumer Price Index went from 12.8 to 53.8. Cumulatively, prices increased 320.3%, which works out to an average of 2.51% per year. Put differently, a dollar in 1917 bought what $0.24 buys in 1975.
| Amount in 1917 | Value in 1975 |
|---|---|
| $1.00 | $4.20 |
| $5.00 | $21.02 |
| $10.00 | $42.03 |
| $20.00 | $84.06 |
| $50.00 | $210 |
| $100 | $420 |
| $500 | $2,102 |
| $1,000 | $4,203 |
| $5,000 | $21,016 |
| $10,000 | $42,031 |
| $100,000 | $420,312 |
| $1,000,000 | $4,203,125 |
The headline number is an average. Individual categories moved very differently over this period. Here is what $100 of 1917 spending costs in 1975, by category:
| Category | Avg. yearly inflation | $100 in 1917 → |
|---|---|---|
| All items (CPI-U) | 2.51% | $420 |
| Food | 2.47% | $412 |
| Apparel | 2.23% | $359 |
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 |
| 1919 | 17.3 | 14.6% | $135 |
| 1921 | 17.9 | -10.5% | $140 |
| 1923 | 17.1 | 1.8% | $134 |
| 1925 | 17.5 | 2.3% | $137 |
| 1927 | 17.4 | -1.7% | $136 |
| 1929 | 17.1 | 0.0% | $134 |
| 1931 | 15.2 | -9.0% | $119 |
| 1933 | 13 | -5.1% | $102 |
| 1935 | 13.7 | 2.2% | $107 |
| 1937 | 14.4 | 3.6% | $113 |
| 1939 | 13.9 | -1.4% | $109 |
| 1941 | 14.7 | 5.0% | $115 |
| 1943 | 17.3 | 6.1% | $135 |
| 1945 | 18 | 2.3% | $141 |
| 1947 | 22.3 | 14.4% | $174 |
| 1949 | 23.8 | -1.2% | $186 |
| 1951 | 26 | 7.9% | $203 |
| 1953 | 26.7 | 0.8% | $209 |
| 1955 | 26.8 | -0.4% | $209 |
| 1957 | 28.1 | 3.3% | $220 |
| 1959 | 29.1 | 0.7% | $227 |
| 1961 | 29.9 | 1.0% | $234 |
| 1963 | 30.6 | 1.3% | $239 |
| 1965 | 31.5 | 1.6% | $246 |
| 1967 | 33.4 | 3.1% | $261 |
| 1969 | 36.7 | 5.5% | $287 |
| 1971 | 40.5 | 4.4% | $316 |
| 1973 | 44.4 | 6.2% | $347 |
| 1975 | 53.8 | 9.1% | $420 |
Long periods are sampled every 2 years; the calculator above covers any pair of years.
MLA: “Inflation from 1917 to 1975: $100 is worth $420 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1917-to-1975/
APA: InflationCalculator.com. Inflation from 1917 to 1975. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1917-to-1975/
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.