U.S. inflation · 1918–1984
$100 in 1918 has the same buying power as
$688
in 1984
| Cumulative price change | 588.1% |
|---|---|
| Average inflation rate | 2.97% per year |
| Converted amount ($100 base) | $688 |
| Price difference ($100 base) | $588 |
| CPI in 1918 | 15.1 |
| CPI in 1984 | 103.9 |
| Inflation in 1918 | 17.97% |
| Inflation in 1984 | 4.32% |
| $100 in 1918 → 1984 | $688 |
| $100 in 1984 → 1918 | $14.53 |
Between 1918 and 1984, the Consumer Price Index went from 15.1 to 103.9. Cumulatively, prices increased 588.1%, which works out to an average of 2.97% per year. Put differently, a dollar in 1918 bought what $0.15 buys in 1984.
| Amount in 1918 | Value in 1984 |
|---|---|
| $1.00 | $6.88 |
| $5.00 | $34.40 |
| $10.00 | $68.81 |
| $20.00 | $138 |
| $50.00 | $344 |
| $100 | $688 |
| $500 | $3,440 |
| $1,000 | $6,881 |
| $5,000 | $34,404 |
| $10,000 | $68,808 |
| $100,000 | $688,079 |
| $1,000,000 | $6,880,795 |
The headline number is an average. Individual categories moved very differently over this period. Here is what $100 of 1918 spending costs in 1984, by category:
| Category | Avg. yearly inflation | $100 in 1918 → |
|---|---|---|
| All items (CPI-U) | 2.97% | $688 |
| Food | 2.80% | $618 |
| Apparel | 2.02% | $374 |
Not shown because the BLS began these indexes after 1918: 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 1918 |
|---|---|---|---|
| 1918 | 15.1 | 18.0% | $100 |
| 1923 | 17.1 | 1.8% | $113 |
| 1928 | 17.1 | -1.7% | $113 |
| 1933 | 13 | -5.1% | $86.09 |
| 1938 | 14.1 | -2.1% | $93.38 |
| 1943 | 17.3 | 6.1% | $115 |
| 1948 | 24.1 | 8.1% | $160 |
| 1953 | 26.7 | 0.8% | $177 |
| 1958 | 28.9 | 2.8% | $191 |
| 1963 | 30.6 | 1.3% | $203 |
| 1968 | 34.8 | 4.2% | $230 |
| 1973 | 44.4 | 6.2% | $294 |
| 1978 | 65.2 | 7.6% | $432 |
| 1983 | 99.6 | 3.2% | $660 |
| 1984 | 103.9 | 4.3% | $688 |
Long periods are sampled every 5 years; the calculator above covers any pair of years.
MLA: “Inflation from 1918 to 1984: $100 is worth $688 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1918-to-1984/
APA: InflationCalculator.com. Inflation from 1918 to 1984. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1918-to-1984/
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.