$1 in 1980 has about the same buying power as $3.92 in 2025 — a total price increase of 291.7% over 45 years, averaging 3.08% a year.
Each amount multiplied by 3.9175.
Index values are annual averages on the 1982-1984 = 100 base. Source: BLS CPI-U, all urban consumers, US city average, all items.
$1 in 1980 has roughly the same buying power as $3.92 in 2025. Prices rose 291.7% in total over those 45 years, an average of 3.08% per year.
Multiply the 1980 amount by 3.9175. That figure is the price index in 2025 divided by the index in 1980 (322.8 ÷ 82.40).
Consumer prices changed by 13.5% during 1980 compared with the previous year.
