I would like to know, say, what 1$ on January 1st, 2010 is worth in today's €.

I'm no economist, but that probably means:

  • Applying "the" $-€ conversion rate that was in place on that day, obtaining January 1st, 2010 euros
  • Adjusting that amount for inflation to convert it into euros of today's.

Something that ran offline would be preferable (any platform but Mac) to something that ran online with APIs would be preferrable to something that ran online period.

  • 1
    For example westegg.com/inflation does the inflation adjustement bit, so long as you convert to USD.
    – badp
    May 4, 2014 at 10:08
  • 3
    You won't find something that runs offline, as most currencies vary continuously in value.
    – VicAche
    May 4, 2014 at 12:04
  • 1
    @VicAche It'd just need to download past exchange and inflation rates from somewhere. Sure, while offline you wouldn't get new ones, but...
    – badp
    May 4, 2014 at 13:38
  • 1
    Combining @badp's suggestions with xe.com/currencytables/?from=USD&date=2010-01-01 for historical exchange rates comes close.
    – user2838
    May 5, 2014 at 6:39
  • The wolfram developer platform can be used to write such a tool in like 3 lines of code. I did this because I needed a currency converter like this myself.
    – Jan Thomä
    Oct 25, 2017 at 11:39


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.