Current U.S. Inflation Rate: October 2018

Inflation Rate: 2.70%
Trailing 12-month CPI
Current CPI:
252.146
Bureau of Labor Statistics
Annual inflation:
2.13%
Bureau of Labor Statistics (2017)

The inflation rate is determined by Consumer Price Index released by the U.S. Bureau of Labor Statistics (BLS). The official announcements typically lag behind the calendar by a month or two. The information displayed is raw data, not seasonally adjusted.

To convert prices while accounting for inflation, use our inflation calculator. You can also view historical U.S. inflation rates or Consumer Price Index by year.


Inflation Rate Chart

This graph of historical inflation rates is generated using the average yearly value of inflation since 1913, as reported by the U.S. government Bureau of Labor Statistics. Inflation is the rate of change of the Consumer Price Index (CPI).

Inflation Rate Chart

The years with the largest changes in pricing were 1917 (15.12%), 1918 (14.78%), and 1920 (13.51%).


Inflation Rate Table

This table shows the inflation rate on a monthly basis. The monthly and annual inflation rates are determined by computing the rate of change in Consumer Price Index over a trailing 12-month period.

12-month percent change of the Consumer Price Index (%)
YearJanFebMarAprMayJunJulAugSepOctNovDecAnnual
2018 2.07 2.21 2.36 2.46 2.80 2.87 2.95 2.70 2.23
2017 2.50 2.74 2.38 2.20 1.87 1.63 1.73 1.94 2.23 2.04 2.20 2.11 2.13
2016 1.37 1.02 0.85 1.13 1.02 1.00 0.83 1.06 1.46 1.64 1.69 2.07 1.26
2015 -0.09 -0.03 -0.07 -0.20 -0.04 0.12 0.17 0.20 -0.04 0.17 0.50 0.73 0.12
2014 1.58 1.13 1.51 1.95 2.13 2.07 1.99 1.70 1.66 1.66 1.32 0.76 1.62
2013 1.59 1.98 1.47 1.06 1.36 1.75 1.96 1.52 1.18 0.96 1.24 1.50 1.46
2012 2.93 2.87 2.65 2.30 1.70 1.66 1.41 1.69 1.99 2.16 1.76 1.74 2.07
2011 1.63 2.11 2.68 3.16 3.57 3.56 3.63 3.77 3.87 3.53 3.39 2.96 3.16
2010 2.63 2.14 2.31 2.24 2.02 1.05 1.24 1.15 1.14 1.17 1.14 1.50 1.64
2009 0.03 0.24 -0.38 -0.74 -1.28 -1.43 -2.10 -1.48 -1.29 -0.18 1.84 2.72 -0.36
2008 4.28 4.03 3.98 3.94 4.18 5.02 5.60 5.37 4.94 3.66 1.07 0.09 3.84
2007 2.08 2.42 2.78 2.57 2.69 2.69 2.36 1.97 2.76 3.54 4.31 4.08 2.85
2006 3.99 3.60 3.36 3.55 4.17 4.32 4.15 3.82 2.06 1.31 1.97 2.54 3.23
2005 2.97 3.01 3.15 3.51 2.80 2.53 3.17 3.64 4.69 4.35 3.46 3.42 3.39
2004 1.93 1.69 1.74 2.29 3.05 3.27 2.99 2.65 2.54 3.19 3.52 3.26 2.68
2003 2.60 2.98 3.02 2.22 2.06 2.11 2.11 2.16 2.32 2.04 1.77 1.88 2.27
2002 1.14 1.14 1.48 1.64 1.18 1.07 1.46 1.80 1.51 2.03 2.20 2.38 1.59
2001 3.73 3.53 2.92 3.27 3.62 3.25 2.72 2.72 2.65 2.13 1.90 1.55 2.83
2000 2.74 3.22 3.76 3.07 3.19 3.73 3.66 3.41 3.45 3.45 3.45 3.39 3.38
1999 1.67 1.61 1.73 2.28 2.09 1.96 2.14 2.26 2.63 2.56 2.62 2.68 2.19
1998 1.57 1.44 1.37 1.44 1.69 1.68 1.68 1.62 1.49 1.49 1.55 1.61 1.55
1997 3.04 3.03 2.76 2.50 2.23 2.30 2.23 2.23 2.15 2.08 1.83 1.70 2.33
1996 2.73 2.65 2.84 2.90 2.89 2.75 2.95 2.88 3.00 2.99 3.26 3.32 2.93
1995 2.80 2.86 2.85 3.05 3.19 3.04 2.76 2.62 2.54 2.81 2.61 2.54 2.81
1994 2.52 2.52 2.51 2.36 2.29 2.49 2.77 2.90 2.96 2.61 2.67 2.67 2.60
1993 3.26 3.25 3.09 3.23 3.22 3.00 2.78 2.77 2.69 2.75 2.68 2.75 2.95
1992 2.60 2.82 3.19 3.18 3.02 3.09 3.16 3.15 2.99 3.20 3.05 2.90 3.03
1991 5.65 5.31 4.90 4.89 4.95 4.70 4.45 3.80 3.39 2.92 2.99 3.06 4.23
1990 5.20 5.26 5.23 4.71 4.36 4.67 4.82 5.62 6.16 6.29 6.27 6.11 5.40
1989 4.67 4.83 4.98 5.12 5.36 5.17 4.98 4.71 4.34 4.49 4.66 4.65 4.83
1988 4.05 3.94 3.93 3.90 3.89 3.96 4.13 4.02 4.17 4.25 4.25 4.42 4.08
1987 1.46 2.10 3.03 3.78 3.86 3.65 3.93 4.28 4.36 4.53 4.53 4.43 3.66
1986 3.89 3.11 2.26 1.59 1.49 1.77 1.58 1.57 1.75 1.47 1.28 1.10 1.90
1985 3.53 3.52 3.70 3.69 3.77 3.76 3.55 3.35 3.14 3.23 3.51 3.80 3.55
1984 4.19 4.60 4.80 4.56 4.23 4.22 4.20 4.29 4.27 4.26 4.05 3.95 4.30
1983 3.71 3.49 3.60 3.90 3.55 2.58 2.46 2.56 2.86 2.85 3.27 3.79 3.21
1982 8.39 7.62 6.78 6.51 6.68 7.06 6.44 5.85 5.04 5.14 4.59 3.83 6.13
1981 11.83 11.41 10.49 10.00 9.78 9.55 10.76 10.80 10.95 10.14 9.59 8.92 10.33
1980 13.91 14.18 14.76 14.73 14.41 14.38 13.13 12.87 12.60 12.77 12.65 12.52 13.55
1979 9.28 9.86 10.09 10.49 10.85 10.89 11.26 11.82 12.18 12.07 12.61 13.29 11.26
1978 6.84 6.43 6.55 6.50 6.97 7.41 7.70 7.84 8.31 8.93 8.89 9.02 7.63
1977 5.22 5.91 6.44 6.95 6.73 6.87 6.83 6.62 6.60 6.39 6.72 6.70 6.50
1976 6.72 6.29 6.07 6.05 6.20 5.97 5.35 5.71 5.49 5.46 4.88 4.86 5.75
1975 11.80 11.23 10.25 10.21 9.47 9.39 9.72 8.60 7.91 7.44 7.38 6.94 9.14
1974 9.39 10.02 10.39 10.09 10.71 10.86 11.51 10.86 11.95 12.06 12.20 12.34 11.05
1973 3.65 3.87 4.59 5.06 5.53 6.00 5.73 7.38 7.36 7.80 8.25 8.71 6.18
1972 3.27 3.51 3.50 3.49 3.23 2.71 2.95 2.94 3.19 3.42 3.67 3.41 3.27
1971 5.29 5.00 4.71 4.16 4.40 4.64 4.36 4.62 4.08 3.81 3.28 3.27 4.30
1970 6.18 6.15 5.82 6.06 6.04 6.01 5.98 5.41 5.66 5.63 5.60 5.57 5.83
1969 4.40 4.68 5.25 5.52 5.51 5.48 5.44 5.71 5.70 5.67 5.93 6.20 5.46
1968 3.65 3.95 3.94 3.93 3.92 4.20 4.49 4.48 4.46 4.75 4.73 4.72 4.27
1967 3.46 2.81 2.80 2.48 2.79 2.78 2.77 2.45 2.75 2.43 2.74 3.04 2.80
1966 1.92 2.56 2.56 2.87 2.87 2.53 2.85 3.48 3.48 3.79 3.79 3.46 3.00
1965 0.97 0.97 1.29 1.62 1.62 1.94 1.61 1.94 1.61 1.93 1.60 1.92 1.59
1964 1.64 1.64 1.31 1.31 1.31 1.31 1.30 0.98 1.30 0.97 1.30 0.97 1.28
1963 1.33 1.00 1.33 0.99 0.99 1.32 1.32 1.32 0.99 1.32 1.32 1.64 1.25
1962 0.67 1.01 1.01 1.34 1.34 1.34 1.00 1.34 1.33 1.33 1.33 1.33 1.18
1961 1.71 1.36 1.36 1.02 1.02 0.68 1.35 1.01 1.35 0.67 0.67 0.67 1.07
1960 1.03 1.73 1.73 1.72 1.72 1.72 1.37 1.37 1.02 1.36 1.36 1.36 1.48
1959 1.40 1.05 0.35 0.35 0.35 0.69 0.69 1.04 1.38 1.73 1.38 1.73 0.99
1958 3.62 3.25 3.60 3.58 3.21 2.85 2.47 2.12 2.12 2.12 2.11 1.76 2.74
1957 2.99 3.36 3.73 3.72 3.70 3.31 3.28 3.66 3.28 2.91 3.27 2.90 3.34
1956 0.37 0.37 0.37 0.75 1.12 1.87 2.24 1.87 1.86 2.23 2.23 2.99 1.52
1955 -0.74 -0.74 -0.74 -0.37 -0.74 -0.74 -0.37 -0.37 0.37 0.37 0.37 0.37 -0.29
1954 1.13 1.51 1.13 0.75 0.75 0.37 0.37 0.00 -0.37 -0.74 -0.37 -0.74 0.34
1953 0.38 0.76 1.14 0.76 1.14 1.13 0.37 0.75 0.75 1.12 0.75 0.75 0.81
1952 4.33 2.33 1.94 2.33 1.93 2.32 3.09 3.09 2.30 1.91 1.14 0.75 2.25
1951 8.09 9.36 9.32 9.32 9.28 8.82 7.47 6.58 6.97 6.50 6.88 6.00 7.86
1950 -2.08 -1.26 -0.84 -1.26 -0.42 -0.42 1.69 2.10 2.09 3.80 3.78 5.93 1.10
1949 1.27 1.28 1.71 0.42 -0.42 -0.83 -2.87 -2.86 -2.45 -2.87 -1.65 -2.07 -0.99
1948 10.23 9.30 6.85 8.68 9.13 9.55 9.91 8.89 6.52 6.09 4.76 2.99 7.72
1947 18.13 18.78 19.67 19.02 18.38 17.65 12.12 11.39 12.75 10.58 8.45 8.84 14.39
1946 2.25 1.69 2.81 3.37 3.35 3.31 9.39 11.60 12.71 14.92 17.68 18.13 8.47
1945 2.30 2.30 2.30 1.71 2.29 2.84 2.26 2.26 2.26 2.26 2.26 2.25 2.27
1944 2.96 2.96 1.16 0.57 0.00 0.57 1.72 2.31 1.72 1.72 1.72 2.30 1.64
1943 7.64 6.96 7.50 8.07 7.36 7.36 6.10 4.85 5.45 4.19 3.57 2.96 5.98
1942 11.35 12.06 12.68 12.59 13.19 10.88 11.56 10.74 9.27 9.15 9.09 9.03 10.92
1941 1.44 0.71 1.43 2.14 2.86 4.26 5.00 6.43 7.86 9.29 10.00 9.93 5.11
1940 -0.71 0.72 0.72 1.45 1.45 2.17 1.45 1.45 -0.71 0.00 0.00 0.71 0.72
1939 -1.41 -1.42 -1.42 -2.82 -2.13 -2.13 -2.13 -2.13 0.00 0.00 0.00 0.00 -1.31
1938 0.71 0.00 -0.70 -0.70 -2.08 -2.08 -2.76 -2.76 -3.42 -4.11 -3.45 -2.78 -2.03
1937 2.17 2.17 3.65 4.38 5.11 4.35 4.32 3.57 4.29 4.29 3.57 2.86 3.72
1936 1.47 0.73 0.00 -0.72 -0.72 0.73 1.46 2.19 2.19 2.19 1.45 1.45 1.07
1935 3.03 3.01 3.01 3.76 3.76 2.24 2.24 2.24 0.74 1.48 2.22 2.99 2.53
1934 2.33 4.72 5.56 5.56 5.56 5.51 2.29 1.52 3.03 2.27 2.27 1.52 3.45
1933 -9.79 -9.93 -10.00 -9.35 -8.03 -6.62 -3.68 -2.22 -1.49 -0.75 0.00 0.76 -5.19
1932 -10.06 -10.19 -10.26 -10.32 -10.46 -9.93 -9.93 -10.60 -10.67 -10.74 -10.20 -10.27 -10.27
1931 -7.02 -7.65 -7.69 -8.82 -9.47 -10.12 -9.04 -8.48 -9.64 -9.70 -10.37 -9.32 -8.94
1930 0.00 -0.58 -0.59 0.59 -0.59 -1.75 -4.05 -4.62 -4.05 -4.62 -5.20 -6.40 -2.65
1929 -1.16 0.00 -0.58 -1.17 -1.16 0.00 1.17 1.17 0.00 0.58 0.58 0.58 0.00
1928 -1.14 -1.72 -1.16 -1.16 -1.15 -2.84 -1.16 -0.58 0.00 -1.15 -0.58 -1.16 -1.20
1927 -2.23 -2.79 -2.81 -3.35 -2.25 -0.56 -1.14 -1.15 -1.14 -1.14 -2.26 -2.26 -1.91
1926 3.47 4.07 2.89 4.07 2.89 1.14 -1.13 -1.69 -1.13 -0.56 -1.67 -1.12 0.92
1925 0.00 0.00 1.17 1.18 1.76 2.94 3.51 4.12 3.51 2.91 4.65 3.47 2.43
1924 2.98 2.38 1.79 0.59 0.59 0.00 -0.58 -0.58 -0.58 -0.58 -0.58 0.00 0.41
1923 -0.59 -0.59 0.60 1.20 1.20 1.80 2.38 3.01 3.61 3.59 2.98 2.37 1.79
1922 -11.05 -8.15 -8.74 -7.73 -5.65 -5.11 -5.08 -6.21 -5.14 -4.57 -3.45 -2.31 -6.16
1921 -1.55 -5.64 -7.11 -10.84 -14.08 -15.79 -14.90 -12.81 -12.50 -12.06 -12.12 -10.82 -10.90
1920 16.97 20.37 20.12 21.56 21.89 23.67 19.54 14.69 12.36 9.94 7.03 2.65 15.62
1919 17.86 14.89 17.14 17.61 16.55 14.97 15.23 14.94 13.38 13.13 13.50 14.55 15.18
1918 19.66 17.50 16.67 12.70 13.28 13.08 17.97 18.46 18.05 18.52 20.74 20.44 17.34
1917 12.50 15.38 14.29 18.87 19.63 20.37 18.52 19.27 19.82 19.47 17.39 18.10 17.81
1916 2.97 4.00 6.06 6.00 5.94 6.93 6.93 7.92 9.90 10.78 11.65 12.62 7.69
1915 1.00 1.01 0.00 2.04 2.02 2.02 1.00 -0.98 -0.98 0.99 0.98 1.98 0.92
1914 2.04 1.02 1.02 0.00 2.06 1.02 1.01 3.03 2.00 1.00 0.99 1.00 1.32

CPI Table

Below are the raw CPI values for each month.

YearJanFebMarAprMayJunJulAugSepOctNovDec
2018 247.87 248.99 249.55 250.55 251.59 251.99 252.01 252.15
2017 242.84 243.60 243.80 244.52 244.73 244.96 244.79 245.52 246.82 246.66 246.67 246.52
2016 236.92 237.11 238.13 239.26 240.23 241.02 240.63 240.85 241.43 241.73 241.35 241.43
2015 233.71 234.72 236.12 236.60 237.81 238.64 238.65 238.32 237.95 237.84 237.34 236.53
2014 233.92 234.78 236.29 237.07 237.90 238.34 238.25 237.85 238.03 237.43 236.15 234.81
2013 230.28 232.17 232.77 232.53 232.95 233.50 233.60 233.88 234.15 233.55 233.07 233.05
2012 226.67 227.66 229.39 230.09 229.82 229.48 229.10 230.38 231.41 231.32 230.22 229.60
2011 220.22 221.31 223.47 224.91 225.96 225.72 225.92 226.55 226.89 226.42 226.23 225.67
2010 216.69 216.74 217.63 218.01 218.18 217.97 218.01 218.31 218.44 218.71 218.80 219.18
2009 211.14 212.19 212.71 213.24 213.86 215.69 215.35 215.83 215.97 216.18 216.33 215.95
2008 211.08 211.69 213.53 214.82 216.63 218.82 219.96 219.09 218.78 216.57 212.43 210.23
2007 202.42 203.50 205.35 206.69 207.95 208.35 208.30 207.92 208.49 208.94 210.18 210.04
2006 198.30 198.70 199.80 201.50 202.50 202.90 203.50 203.90 202.90 201.80 201.50 201.80
2005 190.70 191.80 193.30 194.60 194.40 194.50 195.40 196.40 198.80 199.20 197.60 196.80
2004 185.20 186.20 187.40 188.00 189.10 189.70 189.40 189.50 189.90 190.90 191.00 190.30
2003 181.70 183.10 184.20 183.80 183.50 183.70 183.90 184.60 185.20 185.00 184.50 184.30
2002 177.10 177.80 178.80 179.80 179.80 179.90 180.10 180.70 181.00 181.30 181.30 180.90
2001 175.10 175.80 176.20 176.90 177.70 178.00 177.50 177.50 178.30 177.70 177.40 176.70
2000 168.80 169.80 171.20 171.30 171.50 172.40 172.80 172.80 173.70 174.00 174.10 174.00
1999 164.30 164.50 165.00 166.20 166.20 166.20 166.70 167.10 167.90 168.20 168.30 168.30
1998 161.60 161.90 162.20 162.50 162.80 163.00 163.20 163.40 163.60 164.00 164.00 163.90
1997 159.10 159.60 160.00 160.20 160.10 160.30 160.50 160.80 161.20 161.60 161.50 161.30
1996 154.40 154.90 155.70 156.30 156.60 156.70 157.00 157.30 157.80 158.30 158.60 158.60
1995 150.30 150.90 151.40 151.90 152.20 152.50 152.50 152.90 153.20 153.70 153.60 153.50
1994 146.20 146.70 147.20 147.40 147.50 148.00 148.40 149.00 149.40 149.50 149.70 149.70
1993 142.60 143.10 143.60 144.00 144.20 144.40 144.40 144.80 145.10 145.70 145.80 145.80
1992 138.10 138.60 139.30 139.50 139.70 140.20 140.50 140.90 141.30 141.80 142.00 141.90
1991 134.60 134.80 135.00 135.20 135.60 136.00 136.20 136.60 137.20 137.40 137.80 137.90
1990 127.40 128.00 128.70 128.90 129.20 129.90 130.40 131.60 132.70 133.50 133.80 133.80
1989 121.10 121.60 122.30 123.10 123.80 124.10 124.40 124.60 125.00 125.60 125.90 126.10
1988 115.70 116.00 116.50 117.10 117.50 118.00 118.50 119.00 119.80 120.20 120.30 120.50
1987 111.20 111.60 112.10 112.70 113.10 113.50 113.80 114.40 115.00 115.30 115.40 115.40
1986 109.60 109.30 108.80 108.60 108.90 109.50 109.50 109.70 110.20 110.30 110.40 110.50
1985 105.50 106.00 106.40 106.90 107.30 107.60 107.80 108.00 108.30 108.70 109.00 109.30
1984 101.90 102.40 102.60 103.10 103.40 103.70 104.10 104.50 105.00 105.30 105.30 105.30
1983 97.80 97.90 97.90 98.60 99.20 99.50 99.90 100.20 100.70 101.00 101.20 101.30
1982 94.30 94.60 94.50 94.90 95.80 97.00 97.50 97.70 97.90 98.20 98.00 97.60
1981 87.00 87.90 88.50 89.10 89.80 90.60 91.60 92.30 93.20 93.40 93.70 94.00
1980 77.80 78.90 80.10 81.00 81.80 82.70 82.70 83.30 84.00 84.80 85.50 86.30
1979 68.30 69.10 69.80 70.60 71.50 72.30 73.10 73.80 74.60 75.20 75.90 76.70
1978 62.50 62.90 63.40 63.90 64.50 65.20 65.70 66.00 66.50 67.10 67.40 67.70
1977 58.50 59.10 59.50 60.00 60.30 60.70 61.00 61.20 61.40 61.60 61.90 62.10
1976 55.60 55.80 55.90 56.10 56.50 56.80 57.10 57.40 57.60 57.90 58.00 58.20
1975 52.10 52.50 52.70 52.90 53.20 53.60 54.20 54.30 54.60 54.90 55.30 55.50
1974 46.60 47.20 47.80 48.00 48.60 49.00 49.40 50.00 50.60 51.10 51.50 51.90
1973 42.60 42.90 43.30 43.60 43.90 44.20 44.30 45.10 45.20 45.60 45.90 46.20
1972 41.10 41.30 41.40 41.50 41.60 41.70 41.90 42.00 42.10 42.30 42.40 42.50
1971 39.80 39.90 40.00 40.10 40.30 40.60 40.70 40.80 40.80 40.90 40.90 41.10
1970 37.80 38.00 38.20 38.50 38.60 38.80 39.00 39.00 39.20 39.40 39.60 39.80
1969 35.60 35.80 36.10 36.30 36.40 36.60 36.80 37.00 37.10 37.30 37.50 37.70
1968 34.10 34.20 34.30 34.40 34.50 34.70 34.90 35.00 35.10 35.30 35.40 35.50
1967 32.90 32.90 33.00 33.10 33.20 33.30 33.40 33.50 33.60 33.70 33.80 33.90
1966 31.80 32.00 32.10 32.30 32.30 32.40 32.50 32.70 32.70 32.90 32.90 32.90
1965 31.20 31.20 31.30 31.40 31.40 31.60 31.60 31.60 31.60 31.70 31.70 31.80
1964 30.90 30.90 30.90 30.90 30.90 31.00 31.10 31.00 31.10 31.10 31.20 31.20
1963 30.40 30.40 30.50 30.50 30.50 30.60 30.70 30.70 30.70 30.80 30.80 30.90
1962 30.00 30.10 30.10 30.20 30.20 30.20 30.30 30.30 30.40 30.40 30.40 30.40
1961 29.80 29.80 29.80 29.80 29.80 29.80 30.00 29.90 30.00 30.00 30.00 30.00
1960 29.30 29.40 29.40 29.50 29.50 29.60 29.60 29.60 29.60 29.80 29.80 29.80
1959 29.00 28.90 28.90 29.00 29.00 29.10 29.20 29.20 29.30 29.40 29.40 29.40
1958 28.60 28.60 28.80 28.90 28.90 28.90 29.00 28.90 28.90 28.90 29.00 28.90
1957 27.60 27.70 27.80 27.90 28.00 28.10 28.30 28.30 28.30 28.30 28.40 28.40
1956 26.80 26.80 26.80 26.90 27.00 27.20 27.40 27.30 27.40 27.50 27.50 27.60
1955 26.70 26.70 26.70 26.70 26.70 26.70 26.80 26.80 26.90 26.90 26.90 26.80
1954 26.90 26.90 26.90 26.80 26.90 26.90 26.90 26.90 26.80 26.80 26.80 26.70
1953 26.60 26.50 26.60 26.60 26.70 26.80 26.80 26.90 26.90 27.00 26.90 26.90
1952 26.50 26.30 26.30 26.40 26.40 26.50 26.70 26.70 26.70 26.70 26.70 26.70
1951 25.40 25.70 25.80 25.80 25.90 25.90 25.90 25.90 26.10 26.20 26.40 26.50
1950 23.50 23.50 23.60 23.60 23.70 23.80 24.10 24.30 24.40 24.60 24.70 25.00
1949 24.00 23.80 23.80 23.90 23.80 23.90 23.70 23.80 23.90 23.70 23.80 23.60
1948 23.70 23.50 23.40 23.80 23.90 24.10 24.40 24.50 24.50 24.40 24.20 24.10
1947 21.50 21.50 21.90 21.90 21.90 22.00 22.20 22.50 23.00 23.00 23.10 23.40
1946 18.20 18.10 18.30 18.40 18.50 18.70 19.80 20.20 20.40 20.80 21.30 21.50
1945 17.80 17.80 17.80 17.80 17.90 18.10 18.10 18.10 18.10 18.10 18.10 18.20
1944 17.40 17.40 17.40 17.50 17.50 17.60 17.70 17.70 17.70 17.70 17.70 17.80
1943 16.90 16.90 17.20 17.40 17.50 17.50 17.40 17.30 17.40 17.40 17.40 17.40
1942 15.70 15.80 16.00 16.10 16.30 16.30 16.40 16.50 16.50 16.70 16.80 16.90
1941 14.10 14.10 14.20 14.30 14.40 14.70 14.70 14.90 15.10 15.30 15.40 15.50
1940 13.90 14.00 14.00 14.00 14.00 14.10 14.00 14.00 14.00 14.00 14.00 14.10
1939 14.00 13.90 13.90 13.80 13.80 13.80 13.80 13.80 14.10 14.00 14.00 14.00
1938 14.20 14.10 14.10 14.20 14.10 14.10 14.10 14.10 14.10 14.00 14.00 14.00
1937 14.10 14.10 14.20 14.30 14.40 14.40 14.50 14.50 14.60 14.60 14.50 14.40
1936 13.80 13.80 13.70 13.70 13.70 13.80 13.90 14.00 14.00 14.00 14.00 14.00
1935 13.60 13.70 13.70 13.80 13.80 13.70 13.70 13.70 13.70 13.70 13.80 13.80
1934 13.20 13.30 13.30 13.30 13.30 13.40 13.40 13.40 13.60 13.50 13.50 13.40
1933 12.90 12.70 12.60 12.60 12.60 12.70 13.10 13.20 13.20 13.20 13.20 13.20
1932 14.30 14.10 14.00 13.90 13.70 13.60 13.60 13.50 13.40 13.30 13.20 13.10
1931 15.90 15.70 15.60 15.50 15.30 15.10 15.10 15.10 15.00 14.90 14.70 14.60
1930 17.10 17.00 16.90 17.00 16.90 16.80 16.60 16.50 16.60 16.50 16.40 16.10
1929 17.10 17.10 17.00 16.90 17.00 17.10 17.30 17.30 17.30 17.30 17.30 17.20
1928 17.30 17.10 17.10 17.10 17.20 17.10 17.10 17.10 17.30 17.20 17.20 17.10
1927 17.50 17.40 17.30 17.30 17.40 17.60 17.30 17.20 17.30 17.40 17.30 17.30
1926 17.90 17.90 17.80 17.90 17.80 17.70 17.50 17.40 17.50 17.60 17.70 17.70
1925 17.30 17.20 17.30 17.20 17.30 17.50 17.70 17.70 17.70 17.70 18.00 17.90
1924 17.30 17.20 17.10 17.00 17.00 17.00 17.10 17.00 17.10 17.20 17.20 17.30
1923 16.80 16.80 16.80 16.90 16.90 17.00 17.20 17.10 17.20 17.30 17.30 17.30
1922 16.90 16.90 16.70 16.70 16.70 16.70 16.80 16.60 16.60 16.70 16.80 16.90
1921 19.00 18.40 18.30 18.10 17.70 17.60 17.70 17.70 17.50 17.50 17.40 17.30
1920 19.30 19.50 19.70 20.30 20.60 20.90 20.80 20.30 20.00 19.90 19.80 19.40
1919 16.50 16.20 16.40 16.70 16.90 16.90 17.40 17.70 17.80 18.10 18.50 18.90
1918 14.00 14.10 14.00 14.20 14.50 14.70 15.10 15.40 15.70 16.00 16.30 16.50
1917 11.70 12.00 12.00 12.60 12.80 13.00 12.80 13.00 13.30 13.50 13.50 13.70
1916 10.40 10.40 10.50 10.60 10.70 10.80 10.80 10.90 11.10 11.30 11.50 11.60
1915 10.10 10.00 9.90 10.00 10.10 10.10 10.10 10.10 10.10 10.20 10.30 10.30
1914 10.00 9.90 9.90 9.80 9.90 9.90 10.00 10.20 10.20 10.10 10.20 10.10

Inflation Rate Formula

To compute inflation, start with the inflation rate formula:

CPI in Y2 CPI in Y1 * Y1 USD value = Y2 USD value

For example, if you wanted to convert dollar amounts in the year 2000 to dollar amounts in the year 2018:

CPI in 2018 CPI in 2000 * 2000 USD value = 2018 USD value

Next, we plug in historical CPI values. The U.S. CPI was 172.2 in the year 2000 and 248.991 in early 2018:

248.991172.2 * $100 = $144.59

Therefore, $100 in 2000 has the same "purchasing power" as $144.59 in 2018.