Between 1956 and 1975, the Consumer Price Index went from 27.2 to 53.8.
Cumulatively, prices increased 97.8%, which works out to an average of
3.65% per year. Put differently, a dollar in 1956 bought what
$0.51 buys in 1975.
Common amounts: 1956 dollars in 1975
Amount in 1956
Value in 1975
$1.00
$1.98
$5.00
$9.89
$10.00
$19.78
$20.00
$39.56
$50.00
$98.90
$100
$198
$500
$989
$1,000
$1,978
$5,000
$9,890
$10,000
$19,779
$100,000
$197,794
$1,000,000
$1,977,941
Inflation by spending category, 1956–1975
The headline number is an average. Individual categories moved very differently over this
period. Here is what $100 of 1956 spending costs in 1975, by category:
Category
Avg. yearly inflation
$100 in 1956 →
All items (CPI-U)
3.65%
$198
Medical care
4.97%
$251
Food
4.07%
$214
Transportation
3.47%
$191
Apparel
2.70%
$166
Not shown because the BLS began these indexes after 1956: core (all items less food & energy) (1957–), energy (1957–), housing (1967–), recreation (1993–), education & communication (1993–).
MLA: “Inflation from 1956 to 1975: $100 is worth $198 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1956-to-1975/
APA: InflationCalculator.com. Inflation from 1956 to 1975. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1956-to-1975/