U.S. inflation · 1917–2021
$100 in 1917 has the same buying power as
$2,117
in 2021
| Cumulative price change | 2017.0% |
|---|---|
| Average inflation rate | 2.98% per year |
| Converted amount ($100 base) | $2,117 |
| Price difference ($100 base) | $2,017 |
| CPI in 1917 | 12.8 |
| CPI in 2021 | 270.97 |
| Inflation in 1917 | 17.43% |
| Inflation in 2021 | 4.70% |
| $100 in 1917 → 2021 | $2,117 |
| $100 in 2021 → 1917 | $4.72 |
Between 1917 and 2021, the Consumer Price Index went from 12.8 to 270.97. Cumulatively, prices increased 2017.0%, which works out to an average of 2.98% per year. Put differently, a dollar in 1917 bought what $0.05 buys in 2021.
| Amount in 1917 | Value in 2021 |
|---|---|
| $1.00 | $21.17 |
| $5.00 | $106 |
| $10.00 | $212 |
| $20.00 | $423 |
| $50.00 | $1,058 |
| $100 | $2,117 |
| $500 | $10,585 |
| $1,000 | $21,170 |
| $5,000 | $105,848 |
| $10,000 | $211,695 |
| $100,000 | $2,116,953 |
| $1,000,000 | $21,169,531 |
The headline number is an average. Individual categories moved very differently over this period. Here is what $100 of 1917 spending costs in 2021, by category:
| Category | Avg. yearly inflation | $100 in 1917 → |
|---|---|---|
| All items (CPI-U) | 2.98% | $2,117 |
| Food | 2.88% | $1,916 |
| Apparel | 1.74% | $599 |
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 |
| 1922 | 16.8 | -6.1% | $131 |
| 1927 | 17.4 | -1.7% | $136 |
| 1932 | 13.7 | -9.9% | $107 |
| 1937 | 14.4 | 3.6% | $113 |
| 1942 | 16.3 | 10.9% | $127 |
| 1947 | 22.3 | 14.4% | $174 |
| 1952 | 26.5 | 1.9% | $207 |
| 1957 | 28.1 | 3.3% | $220 |
| 1962 | 30.2 | 1.0% | $236 |
| 1967 | 33.4 | 3.1% | $261 |
| 1972 | 41.8 | 3.2% | $327 |
| 1977 | 60.6 | 6.5% | $473 |
| 1982 | 96.5 | 6.2% | $754 |
| 1987 | 113.6 | 3.6% | $887 |
| 1992 | 140.3 | 3.0% | $1,096 |
| 1997 | 160.5 | 2.3% | $1,254 |
| 2002 | 179.9 | 1.6% | $1,405 |
| 2007 | 207.342 | 2.8% | $1,620 |
| 2012 | 229.594 | 2.1% | $1,794 |
| 2017 | 245.12 | 2.1% | $1,915 |
| 2021 | 270.97 | 4.7% | $2,117 |
Long periods are sampled every 5 years; the calculator above covers any pair of years.
MLA: “Inflation from 1917 to 2021: $100 is worth $2,117 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1917-to-2021/
APA: InflationCalculator.com. Inflation from 1917 to 2021. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1917-to-2021/
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.