$100 in 1931 is worth $2,107 today
$100 in January 1931 had the same buying power as $2,107 in Aug 2026. Prices have risen 2007% since then. Change the amount or the months below.
US CPI data through Aug 2026, updated monthly. How we calculate$100 in Jan 1931 is worth, in Aug 2026
Prices rose 2006.8% in total, about 3.24% a year. Cash kept under the mattress since Jan 1931 now buys only 5% of what it used to.
US Consumer Price Index (CPI-U, all items, not seasonally adjusted), Bureau of Labor Statistics. Data through Aug 2026. Oct 2025 was not published and is estimated from the months around it.
What $100 from 1931 is worth now
Prices in the US have risen 2007% since 1931, so it takes $2,107 today to buy what $100 bought then. Put the other way, $100 kept in cash since 1931 now buys only 4.7% of what it did.
That is an average of 3.2% a year over 96 years. Prices actually fell for several years in the early 1930s, during the Great Depression, before rising again.
For contrast, $100 put into the S&P 500 in January 1931, with dividends reinvested, would be worth about $1,440,830 today, 684× what inflation alone requires. Cash loses buying power; invested money has historically outgrown it.
| Year | Same buying power |
|---|---|
| 1931 | $100 |
| 1940 | $87.42 |
| 1950 | $148 |
| 1960 | $184 |
| 1970 | $238 |
| 1980 | $489 |
| 1990 | $801 |
| 2000 | $1,062 |
| 2010 | $1,363 |
| 2020 | $1,622 |
| Aug 2026 | $2,107 |
CPI in January of each year; the last row uses the latest month.
Other years
Common questions
How much is $100 from 1931 worth today?
About $2,107 in Aug 2026 dollars, based on the US Consumer Price Index (CPI-U) from January 1931.
How much have prices gone up since 1931?
2007% in total, or about 3.2% a year on average.
What would $100 in 1931 buy today?
It buys about 4.7% of what it bought in 1931. You would need $2,107 to buy the same things.
How is this calculated?
Today's value = $100 × (latest CPI ÷ CPI in January 1931). CPI is the Bureau of Labor Statistics measure of the prices US households pay.
Based on the US Consumer Price Index for All Urban Consumers (CPI-U), all items, from the Bureau of Labor Statistics. Individual prices, such as homes, college or healthcare, rose faster or slower than the average.
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