When did prices double after 1964?
By December 1977, prices were twice their 1964 average (CPI-U 31.0 → 62.0), 13 years later. They had tripled by September 1981.
What $1 from 1964 is worth today
$1 in 1964 = $10.86 in September 2026
$1 from 1964$10.86in September 2026 dollars
Prices since 1964+986%CPI 31.0 → 336.9
Average a year3.91%compounded since 1964
Inflation in 19641.0%December to December
Worth in September 2026$1,086.32
Prices changed986.3%
Average a year3.91%
$100.00 in 1964 buys what $1,086.32 buys in September 2026.$100.00 × CPI 336.940 ÷ CPI 31.017 · a whole year uses its average CPI
BLS CPI-U, U.S. city average, not seasonally adjusted, through September 2026 (3.7% over 12 months). Source
1964 dollars in September 2026 dollars
| In 1964 | In September 2026 |
|---|---|
| $1.00 | $10.86 |
| $5.00 | $54.32 |
| $10.00 | $108.63 |
| $20.00 | $217.26 |
| $50.00 | $543.16 |
| $100.00 | $1,086 |
| $500.00 | $5,432 |
| $1,000 | $10,863 |
| $10,000 | $108,632 |
| $50,000 | $543,160 |
| $100,000 | $1,086,319 |
$100 from 1964, decade by decade
| Year | Worth | Average CPI |
|---|---|---|
| 1974 | $158.97 | 49.3 |
| 1984 | $334.93 | 103.9 |
| 1994 | $477.89 | 148.2 |
| 2004 | $608.97 | 188.9 |
| 2014 | $763.25 | 236.7 |
| 2024 | $1,011 | 313.7 |
| September 2026 | $1,086 | 336.9 |
1964 in the inflation record
- Prices rose 1.0% in 1964 (December to December), below the 3.3% average of every year since 1914: #89 of 112 from highest to lowest.
- The 1960s averaged 2.5% a year; the decade’s highest was 1969 at 6.2%.
- Prices first stood at twice their 1964 level in December 1977, and three times in September 1981.
- A dollar today buys what 9.2¢ bought in 1964.
CPI-U each month of 1964
| Month | CPI-U |
|---|---|
| January | 30.900 |
| February | 30.900 |
| March | 30.900 |
| April | 30.900 |
| May | 30.900 |
| June | 31.000 |
| July | 31.100 |
| August | 31.000 |
| September | 31.100 |
| October | 31.100 |
| November | 31.200 |
| December | 31.200 |
| Year average | 31.017 |
U.S. Bureau of Labor Statistics, CPI-U, U.S. city average, all items, not seasonally adjusted (1982-84 = 100). Source
Frequently asked questions
How much is $1 from 1964 worth today?
$10.86 in September 2026. Prices have risen 986.3% since 1964, using the 1964 average CPI-U of 31.017 and the September 2026 CPI-U of 336.940 from the U.S. Bureau of Labor Statistics.
What was the inflation rate in 1964?
Prices rose 1.0% from December 1963 to December 1964 (CPI-U, not seasonally adjusted).
What is the average inflation rate since 1964?
3.91% a year, compounded, from 1964 to September 2026. At that rate prices double about every 18 years.
How much is $100 from 1964 worth today?
$1,086. Multiply any 1964 amount by 10.863 to get today’s money.