What is the buying power of a 1979 dollar compared to a dollar today?

The buying power of a dollar in 1979 has significantly decreased compared to a dollar today due to inflation. On average, prices have increased over the decades, meaning that what you could buy for a dollar in 1979 would typically require several dollars today. According to the U.S. Bureau of Labor Statistics' Consumer Price Index, a dollar in 1979 is roughly equivalent to about $3.50 to $4.00 today, depending on the specific calculation and inflation rate used. This illustrates the substantial impact of inflation on purchasing power over time.