$100 in 1917 is worth $2,863 today
$100 in January 1917 had the same buying power as $2,863 in Aug 2026. Prices have risen 2763% since then. Change the amount or the months below.
US CPI data through Aug 2026, updated monthly. How we calculate$100 in Jan 1917 is worth, in Aug 2026
Prices rose 2763.1% in total, about 3.11% a year. Cash kept under the mattress since Jan 1917 now buys only 3% 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 1917 is worth now
Prices in the US have risen 2763% since 1917, so it takes $2,863 today to buy what $100 bought then. Put the other way, $100 kept in cash since 1917 now buys only 3.5% of what it did.
That is an average of 3.1% a year over 110 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 1917, with dividends reinvested, would be worth about $5,410,765 today, 1890× what inflation alone requires. Cash loses buying power; invested money has historically outgrown it.
| Year | Same buying power |
|---|---|
| 1917 | $100 |
| 1920 | $165 |
| 1930 | $146 |
| 1940 | $119 |
| 1950 | $201 |
| 1960 | $250 |
| 1970 | $323 |
| 1980 | $665 |
| 1990 | $1,089 |
| 2000 | $1,443 |
| 2010 | $1,852 |
| 2020 | $2,205 |
| Aug 2026 | $2,863 |
CPI in January of each year; the last row uses the latest month.
Other years
Common questions
How much is $100 from 1917 worth today?
About $2,863 in Aug 2026 dollars, based on the US Consumer Price Index (CPI-U) from January 1917.
How much have prices gone up since 1917?
2763% in total, or about 3.1% a year on average.
What would $100 in 1917 buy today?
It buys about 3.5% of what it bought in 1917. You would need $2,863 to buy the same things.
How is this calculated?
Today's value = $100 × (latest CPI ÷ CPI in January 1917). 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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