$100 in 1966 has a different purchasing power than $100 today. Over the 60 years since 1966, U.S. consumer prices have risen substantially, so it takes more dollars now to buy the same goods. RaiseGauge computes the exact figure from the BLS CPI-U index.
This is the same inflation adjustment used to compare wages, prices, and budgets across decades: the honest way to ask what something “cost back then” is to convert it into today's dollars, because otherwise you are comparing dollars of different sizes. The page shows the equivalent value today, the total inflation since 1966, and a year-by-year chart of how the figure grew.
Compare nearby years: $100 in 1963 · $100 in 1964 · $100 in 1965 · $100 in 1967 · $100 in 1968 · $100 in 1969.
To check a salary instead of a single amount, use the raise calculator.
Updated July 2026