It would still be 100 dollars - it would just be WORTH damn all.

yep, $100, hard to speculate on its future value, my guess is it would buy you what $46-50 would buy you today.

Perhaps worth less than toilet paper.

$5.

We got a 2% increase in Social Security but my Medicare went up $35 a month.

Who knows? With what is happening with tRUMP and the Republicans maybe inflation by 25%. All can't stay rosy with the stock market either. I'm no financial genius though.

It all depends on what inflation does. Right now the rate of inflation is pretty low, and has been for a little while. But with the current administration, who knows. When I was a kid a Coke and a candy bar were a nickel apiece.

In 15 years we may be using Renminbi/Yuan. The dollar will be worth zip.

You can use an investment calculator to get an estimate of the future value of money in equivalent today's dollars. Instead of interest, simply put a negative rate for inflation.

Historical rates of inflation can be found documented all over; I used this: [usinflationcalculator.com]

Looking at the rates, I estimate that 3% annual rate of inflation would be a conservative number to use.

[calculator.net]

In 15years at an annual inflate rate of 3%, $100 would have the equivalent purchasing power of about $63 dollars today.

It'll still be $100. It's just won't buy as much as $100 today.

It would depend on if the United States follows the example of war-footed Rome. Shed blood of innocents, and in the I,mortal words of Robert E. Heinlien, "...maintain a state of sustained violence." Or, you could be an optimist, and see the elimination of sovereign currencies entirely.

30 yen?