$100 in 1964 has the buying power of $1,086.90 in September 2026. Prices are 986.9% higher, an average of 3.91% a year, by the official Consumer Price Index (CPI-U): 1964's average index was 31.0 and September 2026's is 336.940. Put the other way, $100 in September 2026 buys what $9.20 did in 1964.
Inflation in 1964 was 1.3% (the change in the year's average CPI from 1963; December to December, 1.0%), the 30th lowest of the 112 years since 1914.
| Year | Average CPI-U | Inflation | $100 then is worth today |
|---|---|---|---|
| 1959 | 29.1 | +0.7% | $1,157.87 |
| 1960 | 29.6 | +1.7% | $1,138.31 |
| 1961 | 29.9 | +1.0% | $1,126.89 |
| 1962 | 30.2 | +1.0% | $1,115.70 |
| 1963 | 30.6 | +1.3% | $1,101.11 |
| 1964 | 31.0 | +1.3% | $1,086.90 |
| 1965 | 31.5 | +1.6% | $1,069.65 |
| 1966 | 32.4 | +2.9% | $1,039.94 |
| 1967 | 33.4 | +3.1% | $1,008.80 |
| 1968 | 34.8 | +4.2% | $968.22 |
| 1969 | 36.7 | +5.5% | $918.09 |
3.91% a year, compounded from the middle of 1964 to September 2026: prices are 986.9% higher in all, so a dollar from 1964 is worth $10.87 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.
1963 · Inflation calculator, any month since 1913 · 1965
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.