U.S. inflation · 1921–1930
$100 in 1921 has the same buying power as
$93.30
in 1930
| Cumulative price change | -6.7% |
|---|---|
| Average inflation rate | -0.77% per year |
| Converted amount ($100 base) | $93.30 |
| Price difference ($100 base) | -$6.70 |
| CPI in 1921 | 17.9 |
| CPI in 1930 | 16.7 |
| Inflation in 1921 | -10.50% |
| Inflation in 1930 | -2.34% |
| $100 in 1921 → 1930 | $93.30 |
| $100 in 1930 → 1921 | $107 |
Between 1921 and 1930, the Consumer Price Index went from 17.9 to 16.7. Cumulatively, prices declined 6.7%, which works out to an average of -0.77% per year. Put differently, a dollar in 1921 bought what $1.07 buys in 1930.
| Amount in 1921 | Value in 1930 |
|---|---|
| $1.00 | $0.93 |
| $5.00 | $4.66 |
| $10.00 | $9.33 |
| $20.00 | $18.66 |
| $50.00 | $46.65 |
| $100 | $93.30 |
| $500 | $466 |
| $1,000 | $933 |
| $5,000 | $4,665 |
| $10,000 | $9,330 |
| $100,000 | $93,296 |
| $1,000,000 | $932,961 |
The headline number is an average. Individual categories moved very differently over this period. Here is what $100 of 1921 spending costs in 1930, by category:
| Category | Avg. yearly inflation | $100 in 1921 → |
|---|---|---|
| All items (CPI-U) | -0.77% | $93.30 |
| Food | -0.21% | $98.11 |
| Apparel | -3.45% | $72.89 |
Not shown because the BLS began these indexes after 1921: 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 1921 |
|---|---|---|---|
| 1921 | 17.9 | -10.5% | $100 |
| 1922 | 16.8 | -6.1% | $93.85 |
| 1923 | 17.1 | 1.8% | $95.53 |
| 1924 | 17.1 | 0.0% | $95.53 |
| 1925 | 17.5 | 2.3% | $97.77 |
| 1926 | 17.7 | 1.1% | $98.88 |
| 1927 | 17.4 | -1.7% | $97.21 |
| 1928 | 17.1 | -1.7% | $95.53 |
| 1929 | 17.1 | 0.0% | $95.53 |
| 1930 | 16.7 | -2.3% | $93.30 |
MLA: “Inflation from 1921 to 1930: $100 is worth $93.30 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1921-to-1930/
APA: InflationCalculator.com. Inflation from 1921 to 1930. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1921-to-1930/
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.