$100 in 1998 has the buying power of $206.71 in September 2026. Prices are 106.7% higher, an average of 2.61% a year, by the official Consumer Price Index (CPI-U): 1998's average index was 163.0 and September 2026's is 336.940. Put the other way, $100 in September 2026 buys what $48.38 did in 1998.
Inflation in 1998 was 1.6% (the change in the year's average CPI from 1997; December to December, 1.6%), the 38th lowest of the 112 years since 1914.
| Year | Average CPI-U | Inflation | $100 then is worth today |
|---|---|---|---|
| 1993 | 144.5 | +3.0% | $233.18 |
| 1994 | 148.2 | +2.6% | $227.35 |
| 1995 | 152.4 | +2.8% | $221.09 |
| 1996 | 156.9 | +3.0% | $214.75 |
| 1997 | 160.5 | +2.3% | $209.93 |
| 1998 | 163.0 | +1.6% | $206.71 |
| 1999 | 166.6 | +2.2% | $202.24 |
| 2000 | 172.2 | +3.4% | $195.67 |
| 2001 | 177.1 | +2.8% | $190.25 |
| 2002 | 179.9 | +1.6% | $187.29 |
| 2003 | 184.0 | +2.3% | $183.12 |
2.61% a year, compounded from the middle of 1998 to September 2026: prices are 106.7% higher in all, so a dollar from 1998 is worth $2.07 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.
1997 · Inflation calculator, any month since 1913 · 1999
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.