When did prices double after 1984?
By May 2007, prices were twice their 1984 average (CPI-U 103.9 → 207.8), 23 years later. They had tripled by March 2024.
What $1 from 1984 is worth today
$1 in 1984 = $3.24 in September 2026
$1 from 1984$3.24in September 2026 dollars
Prices since 1984+224%CPI 103.9 → 336.9
Average a year2.82%compounded since 1984
Inflation in 19843.9%December to December
Worth in September 2026$324.34
Prices changed224.3%
Average a year2.82%
$100.00 in 1984 buys what $324.34 buys in September 2026.$100.00 × CPI 336.940 ÷ CPI 103.883 · 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
1984 dollars in September 2026 dollars
| In 1984 | In September 2026 |
|---|---|
| $1.00 | $3.24 |
| $5.00 | $16.22 |
| $10.00 | $32.43 |
| $20.00 | $64.87 |
| $50.00 | $162.17 |
| $100.00 | $324.34 |
| $500.00 | $1,622 |
| $1,000 | $3,243 |
| $10,000 | $32,434 |
| $50,000 | $162,172 |
| $100,000 | $324,345 |
$100 from 1984, decade by decade
| Year | Worth | Average CPI |
|---|---|---|
| 1994 | $142.68 | 148.2 |
| 2004 | $181.82 | 188.9 |
| 2014 | $227.89 | 236.7 |
| 2024 | $301.96 | 313.7 |
| September 2026 | $324.34 | 336.9 |
1984 in the inflation record
- Prices rose 3.9% in 1984 (December to December), above the 3.3% average of every year since 1914: #30 of 112 from highest to lowest.
- The 1980s averaged 5.1% a year; the decade’s highest was 1980 at 12.5%.
- Prices first stood at twice their 1984 level in May 2007, and three times in March 2024.
- A dollar today buys what 30.8¢ bought in 1984.
CPI-U each month of 1984
| Month | CPI-U |
|---|---|
| January | 101.900 |
| February | 102.400 |
| March | 102.600 |
| April | 103.100 |
| May | 103.400 |
| June | 103.700 |
| July | 104.100 |
| August | 104.500 |
| September | 105.000 |
| October | 105.300 |
| November | 105.300 |
| December | 105.300 |
| Year average | 103.883 |
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 1984 worth today?
$3.24 in September 2026. Prices have risen 224.3% since 1984, using the 1984 average CPI-U of 103.883 and the September 2026 CPI-U of 336.940 from the U.S. Bureau of Labor Statistics.
What was the inflation rate in 1984?
Prices rose 3.9% from December 1983 to December 1984 (CPI-U, not seasonally adjusted).
What is the average inflation rate since 1984?
2.82% a year, compounded, from 1984 to September 2026. At that rate prices double about every 25 years.
How much is $100 from 1984 worth today?
$324.34. Multiply any 1984 amount by 3.243 to get today’s money.