CPI-U in 2018
The U.S. Consumer Price Index for All Urban Consumers (CPI-U) averaged 251.107 in 2018 (1982–84 = 100), 2.4% above the 2017 average. From December 2017 to December 2018, prices rose 1.9%. Prices in August 2026 were 1.33 times their 2018 level.
Monthly CPI-U index values, 2018
The highest monthly index in 2018 was 252.885 (October), the lowest 247.867 (January). The 12-month inflation rate ranged from +1.9% in December to +2.9% in July. Historical context — The low-inflation decade (2010–2020): Inflation mostly ran below 2.5% a year.
| Month | CPI-U index | Change from prior month | 12-month change |
|---|---|---|---|
| January 2018 | 247.867 | +0.5% | +2.1% |
| February 2018 | 248.991 | +0.5% | +2.2% |
| March 2018 | 249.554 | +0.2% | +2.4% |
| April 2018 | 250.546 | +0.4% | +2.5% |
| May 2018 | 251.588 | +0.4% | +2.8% |
| June 2018 | 251.989 | +0.2% | +2.9% |
| July 2018 | 252.006 | 0.0% | +2.9% |
| August 2018 | 252.146 | +0.1% | +2.7% |
| September 2018 | 252.439 | +0.1% | +2.3% |
| October 2018 | 252.885 | +0.2% | +2.5% |
| November 2018 | 252.038 | −0.3% | +2.2% |
| December 2018 | 251.233 | −0.3% | +1.9% |
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 251.107 as published by the BLS.
CPI 2018: common questions
What was the CPI in 2018?
The CPI-U annual average for 2018 was 251.107 on the 1982–84 = 100 base. Monthly values ranged from 247.867 to 252.885.
What was the inflation rate in 2018?
Measured by annual averages, consumer prices rose 2.4% in 2018; December to December the change was +1.9%.
How much is $100 from 2018 worth today?
About $133.40 in August 2026 prices, based on the change in CPI-U. Use the inflation calculator for other amounts.