$100 in 1978 is worth $513.77 in August 2026 dollars. Prices are 413.8% higher than they were in 1978, an average inflation rate of 3.46% a year over roughly 48 years, according to the Bureau of Labor Statistics consumer price index.
Inflation in 1978
The average CPI-U in 1978 was 65.2, up from 60.6 in 1977 — an annual inflation rate of 7.6%.
That rate was higher than in 95 of the 112 years from 1914 to 2025, and above the long-run average of 3.16% a year.
Average prices had doubled from their 1978 level by 1990, 12 years later.
Value of $100 from 1978 over time
1978 dollars in today’s dollars
| 1978 dollars | August 2026 dollars |
|---|---|
| $1 | $5.14 |
| $5 | $25.69 |
| $10 | $51.38 |
| $20 | $102.75 |
| $50 | $256.89 |
| $100 | $513.77 |
| $500 | $2,568.87 |
| $1,000 | $5,137.73 |
| $5,000 | $25,688.65 |
| $10,000 | $51,377.30 |
| $50,000 | $256,886.50 |
| $100,000 | $513,773.01 |
Buying power of $100 from 1978, year by year
| Year | Avg CPI-U | Inflation that year | Equivalent of $100 from 1978 |
|---|---|---|---|
| 1978 | 65.2 | 7.6% | $100.00 |
| 1979 | 72.6 | 11.3% | $111.35 |
| 1980 | 82.4 | 13.5% | $126.38 |
| 1981 | 90.9 | 10.3% | $139.42 |
| 1982 | 96.5 | 6.2% | $148.01 |
| 1983 | 99.6 | 3.2% | $152.76 |
| 1984 | 103.900 | 4.3% | $159.36 |
| 1985 | 107.600 | 3.6% | $165.03 |
| 1986 | 109.600 | 1.9% | $168.10 |
| 1987 | 113.600 | 3.6% | $174.23 |
| 1988 | 118.300 | 4.1% | $181.44 |
| 1989 | 124.000 | 4.8% | $190.18 |
| 1990 | 130.700 | 5.4% | $200.46 |
| 1991 | 136.200 | 4.2% | $208.90 |
| 1992 | 140.300 | 3.0% | $215.18 |
| 1993 | 144.500 | 3.0% | $221.63 |
| 1994 | 148.200 | 2.6% | $227.30 |
| 1995 | 152.400 | 2.8% | $233.74 |
| 1996 | 156.900 | 3.0% | $240.64 |
| 1997 | 160.500 | 2.3% | $246.17 |
| 1998 | 163.000 | 1.6% | $250.00 |
| 1999 | 166.600 | 2.2% | $255.52 |
| 2000 | 172.200 | 3.4% | $264.11 |
| 2001 | 177.100 | 2.8% | $271.63 |
| 2002 | 179.900 | 1.6% | $275.92 |
| 2003 | 184.000 | 2.3% | $282.21 |
| 2004 | 188.900 | 2.7% | $289.72 |
| 2005 | 195.300 | 3.4% | $299.54 |
| 2006 | 201.600 | 3.2% | $309.20 |
| 2007 | 207.342 | 2.8% | $318.01 |
| 2008 | 215.303 | 3.8% | $330.22 |
| 2009 | 214.537 | -0.4% | $329.04 |
| 2010 | 218.056 | 1.6% | $334.44 |
| 2011 | 224.939 | 3.2% | $345.00 |
| 2012 | 229.594 | 2.1% | $352.14 |
| 2013 | 232.957 | 1.5% | $357.30 |
| 2014 | 236.736 | 1.6% | $363.09 |
| 2015 | 237.017 | 0.1% | $363.52 |
| 2016 | 240.007 | 1.3% | $368.11 |
| 2017 | 245.120 | 2.1% | $375.95 |
| 2018 | 251.107 | 2.4% | $385.13 |
| 2019 | 255.657 | 1.8% | $392.11 |
| 2020 | 258.811 | 1.2% | $396.95 |
| 2021 | 270.970 | 4.7% | $415.60 |
| 2022 | 292.655 | 8.0% | $448.86 |
| 2023 | 304.702 | 4.1% | $467.33 |
| 2024 | 313.689 | 2.9% | $481.12 |
| 2025 | 321.943 | 2.6% | $493.78 |
| August 2026 | 334.980 | — | $513.77 |
How this is calculated
Value today = amount × (latest CPI-U ÷ 1978 average CPI-U). For $100: 100 × (334.980 ÷ 65.2) = $513.77. The average annual rate is the compound rate that turns 1978 prices into today’s over the elapsed time, measured from mid-1978 because an annual average describes the middle of the year. CPI-U tracks a broad basket of urban consumer spending; the prices of specific items such as housing, tuition or food have moved by different amounts.
Reverse: $100.00 today had the same buying power as $19.46 in 1978.
Other years
1968 dollars today · 1973 dollars today · 1976 dollars today · 1977 dollars today · 1979 dollars today · 1980 dollars today · 1983 dollars today · 1988 dollars today · Inflation calculator (any two years)
