$100 in 1955 is worth $1,255 today
$100 in January 1955 had the same buying power as $1,255 in Aug 2026. Prices have risen 1155% since then. Change the amount or the months below.
US CPI data through Aug 2026, updated monthly. How we calculate$100 in Jan 1955 is worth, in Aug 2026
Prices rose 1154.6% in total, about 3.60% a year. Cash kept under the mattress since Jan 1955 now buys only 8% 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 1955 is worth now
Prices in the US have risen 1155% since 1955, so it takes $1,255 today to buy what $100 bought then. Put the other way, $100 kept in cash since 1955 now buys only 8.0% of what it did.
That is an average of 3.6% a year over 72 years. Inflation was mostly low in the 1950s and early 1960s, before speeding up later in the decade.
For contrast, $100 put into the S&P 500 in January 1955, with dividends reinvested, would be worth about $164,550 today, 131× what inflation alone requires. Cash loses buying power; invested money has historically outgrown it.
| Year | Same buying power |
|---|---|
| 1955 | $100 |
| 1960 | $110 |
| 1970 | $142 |
| 1980 | $291 |
| 1990 | $477 |
| 2000 | $632 |
| 2010 | $812 |
| 2020 | $966 |
| Aug 2026 | $1,255 |
CPI in January of each year; the last row uses the latest month.
Other years
Common questions
How much is $100 from 1955 worth today?
About $1,255 in Aug 2026 dollars, based on the US Consumer Price Index (CPI-U) from January 1955.
How much have prices gone up since 1955?
1155% in total, or about 3.6% a year on average.
What would $100 in 1955 buy today?
It buys about 8.0% of what it bought in 1955. You would need $1,255 to buy the same things.
How is this calculated?
Today's value = $100 × (latest CPI ÷ CPI in January 1955). 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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