Between 1930 and 2025, US consumer prices rose by 1832.9%. That means $1 billion then had roughly the same buying power as $19,329,341,317 now — an average of 3.17% inflation per year over 95 years.
What $1 billion in 1930 was worth at each following decade, adjusted for consumer price inflation.
Inflation adjustment uses the ratio of the Consumer Price Index between the two years — the same method the U.S. Bureau of Labor Statistics documents for comparing dollar amounts over time.
The index used is CPI-U (all urban consumers, US city average, all items), base period 1982-1984 = 100. Inflation in 1930 itself ran at -2.3%. The 2025 figure is the latest annual average available and may be revised by BLS.
Note: other inflation calculators may show slightly different results because some use a specific month rather than the annual average, or a different end year. This page uses annual averages throughout, and states both index values above so the arithmetic can be checked.
$1 billion in 1930 is equivalent in purchasing power to about $19,329,341,317 in 2025. That is an increase of $18,329,341,317 over 95 years, or a total price rise of 1832.9%.
Prices rose at an average of 3.17% per year between 1930 and 2025. Compounded over 95 years, that turns $1 billion into $19,329,341,317.
The amount is multiplied by the ratio of the Consumer Price Index in 2025 to the index in 1930: 322.8 divided by 16.7 equals 19.3293. Multiplying $1 billion by 19.3293 gives $19,329,341,317. The index is the CPI-U published by the U.S. Bureau of Labor Statistics, base period 1982-1984 = 100.
Running the comparison in reverse, $1,000,000,000 in 2025 has roughly the same buying power as $51,734,820 in 1930.
Use the full inflation tool to compare any amount between any two years, or project what today's money will be worth in the future.
