$100 in 1921 is worth $1,763 today
$100 in January 1921 had the same buying power as $1,763 in Aug 2026. Prices have risen 1663% since then. Change the amount or the months below.
US CPI data through Aug 2026, updated monthly. How we calculate$100 in Jan 1921 is worth, in Aug 2026
Prices rose 1663.1% in total, about 2.76% a year. Cash kept under the mattress since Jan 1921 now buys only 6% 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 1921 is worth now
Prices in the US have risen 1663% since 1921, so it takes $1,763 today to buy what $100 bought then. Put the other way, $100 kept in cash since 1921 now buys only 5.7% of what it did.
That is an average of 2.8% a year over 106 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 1921, with dividends reinvested, would be worth about $5,465,669 today, 3100× what inflation alone requires. Cash loses buying power; invested money has historically outgrown it.
| Year | Same buying power |
|---|---|
| 1921 | $100 |
| 1930 | $90.00 |
| 1940 | $73.16 |
| 1950 | $124 |
| 1960 | $154 |
| 1970 | $199 |
| 1980 | $409 |
| 1990 | $671 |
| 2000 | $888 |
| 2010 | $1,140 |
| 2020 | $1,358 |
| Aug 2026 | $1,763 |
CPI in January of each year; the last row uses the latest month.
Other years
Common questions
How much is $100 from 1921 worth today?
About $1,763 in Aug 2026 dollars, based on the US Consumer Price Index (CPI-U) from January 1921.
How much have prices gone up since 1921?
1663% in total, or about 2.8% a year on average.
What would $100 in 1921 buy today?
It buys about 5.7% of what it bought in 1921. You would need $1,763 to buy the same things.
How is this calculated?
Today's value = $100 × (latest CPI ÷ CPI in January 1921). 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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