$100 in 1978 is worth $208.71 in 1991

2.09× price rise

Average US inflation: 5.82% a year over 13 years. Prices first doubled by 1990. Highest year: 1980 (13.5%). Lowest: 1986 (1.9%).

Converter

1978in 19911991 amount in 1978 money
$1$2.09$0.48
$10$20.87$4.79
$100$208.71$47.91
$1,000$2,087.11$479.13
$10,000$20,871.12$4,791.31
$100,000$208,711.20$47,913.10

Year by year (value of $100 from 1978)

YearValueInflation
1978$100.00
1979$111.2511.3%
1980$126.2713.5%
1981$139.3810.4%
1982$147.966.2%
1983$152.643.2%
1984$159.314.4%
1985$164.933.5%
1986$168.131.9%
1987$174.153.6%
1988$181.294.1%
1989$189.974.8%
1990$200.275.4%
1991$208.714.2%

1978–1990 · 1978–1992 · All years

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How much is $100 from 1978 worth in 1991?

$100 in 1978 had about the same buying power as $208.71 in 1991, based on US consumer price index data.

What was the average inflation rate in US from 1978 to 1991?

About 5.82% per year, compounding to a 108.7% total rise in prices over 13 years.

Which year between 1978 and 1991 had the highest inflation?

1980 saw the largest annual rise in the index (13.5%); the lowest was 1986 (1.9%).


Historical statistics for education only. Not investment advice. US CPI: U.S. Bureau of Labor Statistics CPI-U (public domain), annual averages; 2026 = Sep 2026 index. India CPI: World Bank WDI FP.CPI.TOTL (source IMF IFS), licensed CC BY 4.0. INR/USD: Federal Reserve Board H.10. Sources & method · Embed this calculator · BacktestCard