$100 in 1975 is worth $121.21 in 1978

1.21× price rise

Average US inflation: 6.62% a year over 3 years. Prices did not double in this span. Highest year: 1978 (7.6%). Lowest: 1976 (5.8%).

Converter

1975	in 1978	1978 amount in 1975 money
$1	$1.21	$0.83
$10	$12.12	$8.25
$100	$121.21	$82.50
$1,000	$1,212.11	$825.01
$10,000	$12,121.07	$8,250.10
$100,000	$121,210.71	$82,500.96

Year by year (value of $100 from 1975)

Year	Value	Inflation
1975	$100.00
1976	$105.77	5.8%
1977	$112.62	6.5%
1978	$121.21	7.6%

1975–1977 · 1975–1979 · All years

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How much is $100 from 1975 worth in 1978?

$100 in 1975 had about the same buying power as $121.21 in 1978, based on US consumer price index data.

What was the average inflation rate in US from 1975 to 1978?

About 6.62% per year, compounding to a 21.2% total rise in prices over 3 years.

Which year between 1975 and 1978 had the highest inflation?

1978 saw the largest annual rise in the index (7.6%); the lowest was 1976 (5.8%).

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