$100 in 1945 has the buying power of $1,871.89 in September 2026. Prices are 1,771.9% higher, an average of 3.67% a year, by the official Consumer Price Index (CPI-U): 1945's average index was 18.0 and September 2026's is 336.940. Put the other way, $100 in September 2026 buys what $5.34 did in 1945.
Inflation in 1945 was 2.3% (the change in the year's average CPI from 1944; December to December, 2.2%), the 52nd lowest of the 112 years since 1914.
| Year | Average CPI-U | Inflation | $100 then is worth today |
|---|---|---|---|
| 1940 | 14.0 | +0.7% | $2,406.71 |
| 1941 | 14.7 | +5.0% | $2,292.11 |
| 1942 | 16.3 | +10.9% | $2,067.12 |
| 1943 | 17.3 | +6.1% | $1,947.63 |
| 1944 | 17.6 | +1.7% | $1,914.43 |
| 1945 | 18.0 | +2.3% | $1,871.89 |
| 1946 | 19.5 | +8.3% | $1,727.90 |
| 1947 | 22.3 | +14.4% | $1,510.94 |
| 1948 | 24.1 | +8.1% | $1,398.09 |
| 1949 | 23.8 | −1.2% | $1,415.71 |
| 1950 | 24.1 | +1.3% | $1,398.09 |
3.67% a year, compounded from the middle of 1945 to September 2026: prices are 1,771.9% higher in all, so a dollar from 1945 is worth $18.72 today.
The Bureau of Labor Statistics' Consumer Price Index for All Urban Consumers (CPI-U), all items, U.S. city average, not seasonally adjusted, which runs back to January 1913. A year's figure is the average of its monthly indexes, as BLS computes annual averages; today's figure is the latest month, September 2026, so the answer moves each month when BLS publishes a new CPI.
1944 · Inflation calculator, any month since 1913 · 1946
Source: BLS CPI-U, all items, U.S. city average, not seasonally adjusted (FRED CPIAUCNS); through 2006, BLS's official annual averages. The answer moves each month, when BLS publishes a new CPI.