Web Applications Stack Exchange is a question and answer site for power users of web applications. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Google Calculator can convert one currency to another at today's exchange rates, but often I'll want to convert one currency to itself at a different time. For example, what would $1,000 in 1930 be worth in today's dollars? Is there a Web app to do this?

share|improve this question

closed as off-topic by Al E., Alex, jonsca Jun 16 '15 at 3:01

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Application/website recommendations are off-topic and out of scope. It is better instead to use a particular web app or website and ask for help in any issues you have with it specifically." – Al E., Alex, jonsca
If this question can be reworded to fit the rules in the help center, please edit the question.

up vote 27 down vote accepted

Slap it into WolframAlpha (although I still dislike the guess-the-syntax game)

Here is what you can use.

compute the current value of a historical quantity of money

$1000 (1930 dollars)

compute historical equivalent value of today's money

1000 current dollars in 1930

convert one historical quantity of money to another

$1000 1930 dollars in 1975


This returns

$ 12952.10(2010 US dollars)

Also gives the purchasing power.

alt text

share|improve this answer
I wish the graph was logarithmic. – Tadeusz A. Kadłubowski Jul 11 '10 at 6:06
Out of curiosity, I tried to guess a syntax for converting 1930s dollars to 1975 dollars, but it was an exercise in frustration. – Joe White Jul 13 '10 at 12:00
@Joe White As I said, I hate the guessing game. You will want $ 1000 (1930 US dollars) in 1975 that returns this http://www.wolframalpha.com/input/?i=$1000+1930+dollars+in+1975 , for a sort of guide ... type in inflation. – phwd Jul 13 '10 at 13:52

Try this site, it gives the purchasing power of money for the US and UK going back to 1257 http://eh.net/hmit/

share|improve this answer

You have to apply an inflation based coefficient, there's an entire site on this topic: http://inflationdata.com/Inflation/Inflation/Inflation.asp.

However it is not that simple, as the raw convertion is not an indication of the real value of money. So you have to take in account purchasing power: http://www.measuringworth.com/ppowerus/

share|improve this answer
+1. Good point about purchasing power. – Peter Mortensen Jul 15 '10 at 12:53

Not the answer you're looking for? Browse other questions tagged or ask your own question.