What is $100 from 1978 worth today?
$100 in 1978 has the same buying power as $516.52 in September 2026. Prices are 417% higher than in 1978, an average inflation rate of 3.46% a year, according to the Bureau of Labor Statistics' consumer price index.
1978 dollars in today's money
| In 1978 | In September 2026 |
|---|---|
| $1 | $5.17 |
| $5 | $25.83 |
| $10 | $51.65 |
| $20 | $103.30 |
| $50 | $258.26 |
| $100 | $516.52 |
| $1,000 | $5,165 |
| $10,000 | $51,652 |
| $100,000 | $516,518 |
Inflation calculator
Based on the annual average consumer price index (CPI-U) for each year; "today" is the latest monthly CPI.
What $100 from 1978 was worth over time
| Year | Value of $100 from 1978 |
|---|---|
| 1980 | $126.33 |
| 1985 | $164.90 |
| 1990 | $200.29 |
| 1995 | $233.60 |
| 2000 | $263.98 |
| 2005 | $299.38 |
| 2010 | $334.27 |
| 2015 | $363.34 |
| 2020 | $396.75 |
| September 2026 | $516.52 |
Annual-average CPI of each year.
Frequently asked questions
How much is $100 from 1978 worth today?
$100 in 1978 has the same buying power as $516.52 in September 2026. Prices are 417% higher than in 1978, an average inflation rate of 3.46% a year, according to the Bureau of Labor Statistics' consumer price index.
What was the inflation rate in 1978?
Consumer prices rose 7.6% in 1978 on an annual-average basis, and +9.0% from December 1977 to December 1978.
How much would $1 from 1978 be worth now?
$1 in 1978 is worth about $5.17 in September 2026 dollars. Put the other way, a dollar today buys what $0.19 bought in 1978.
How is this calculated?
We divide the latest consumer price index (336.940 for September 2026) by the average index for 1978 (65.233) and multiply by the amount. The index is the CPI for All Urban Consumers (CPI-U), 1982-84 = 100, published by the Bureau of Labor Statistics.
Source: U.S. Bureau of Labor Statistics, CPI-U (1982-84 = 100), via FRED.