Inflation Calculator
What money from any year since 1913 is worth today, using the official Consumer Price Index.
Questions readers ask
How much is $100 from 1971 worth today?
About $832 in September 2026 dollars, based on the CPI-U. Prices are roughly 8.3 times higher than in 1971.
Which inflation measure does this use?
The CPI-U, all items, US city average, published monthly by the Bureau of Labor Statistics. It is the measure behind the headline inflation rate in the news.
Why does my result differ from other calculators?
Calculators differ in whether they use annual averages or single months, and which month counts as today. This one uses annual averages for past years and the latest published month for today.
The bigger picture, every Monday
One research brief on the dollar, the debt and the assets being repriced around them.


