CPI-U in 1999
The U.S. Consumer Price Index for All Urban Consumers (CPI-U) averaged 166.6 in 1999 (1982–84 = 100), 2.2% above the 1998 average. From December 1998 to December 1999, prices rose 2.7%. Prices in August 2026 were 2.01 times their 1999 level.
Monthly CPI-U index values, 1999
The highest monthly index in 1999 was 168.3 (December), the lowest 164.3 (January). The 12-month inflation rate ranged from +1.6% in February to +2.7% in December. Historical context — The Great Moderation (1983–2007): Inflation averaged about 3% a year with low volatility.
| Month | CPI-U index | Change from prior month | 12-month change |
|---|---|---|---|
| January 1999 | 164.3 | +0.2% | +1.7% |
| February 1999 | 164.5 | +0.1% | +1.6% |
| March 1999 | 165.0 | +0.3% | +1.7% |
| April 1999 | 166.2 | +0.7% | +2.3% |
| May 1999 | 166.2 | 0.0% | +2.1% |
| June 1999 | 166.2 | 0.0% | +2.0% |
| July 1999 | 166.7 | +0.3% | +2.1% |
| August 1999 | 167.1 | +0.2% | +2.3% |
| September 1999 | 167.9 | +0.5% | +2.6% |
| October 1999 | 168.2 | +0.2% | +2.6% |
| November 1999 | 168.3 | +0.1% | +2.6% |
| December 1999 | 168.3 | 0.0% | +2.7% |
CPI-U, U.S. city average, all items, not seasonally adjusted, 1982–84 = 100 (BLS series CUUR0000SA0). Before 2007 the BLS published the index to one decimal place. Annual average 166.6 as published by the BLS.
CPI 1999: common questions
What was the CPI in 1999?
The CPI-U annual average for 1999 was 166.6 on the 1982–84 = 100 base. Monthly values ranged from 164.3 to 168.3.
What was the inflation rate in 1999?
Measured by annual averages, consumer prices rose 2.2% in 1999; December to December the change was +2.7%.
How much is $100 from 1999 worth today?
About $201.07 in August 2026 prices, based on the change in CPI-U. Use the inflation calculator for other amounts.