Find file
Fetching contributors…
Cannot retrieve contributors at this time
60 lines (39 sloc) 1.94 KB



This gem downloads the exchange rates from the European Central Bank. You can calculate exchange rates with it. It is compatible with the money gem.


$ gem install eu_central_bank


  • nokogiri

  • money


With the gem, you do not need to manually add exchange rates. Calling update_rates will download the rates from the European Central Bank. The API is the same as the money gem. Feel free to use Money objects with the bank.

eu_bank =
Money.default_bank = eu_bank
money1 = # eu_bank

# call this before calculating exchange rates
# this will download the rates from ECB

# exchange 100 CAD to USD
# API is the same as the money gem, "CAD", "USD") #, "USD")
Money.us_dollar(100).exchange_to("CAD")  #, "CAD")

# using the new exchange_with method
eu_bank.exchange_with(, "CAD"), "USD") #, "USD")

For performance reasons, you may prefer to read from a file instead. Furthermore, ECB publishes their rates daily. It makes sense to save the rates in a file to read from.

# saves the rates in a specified location

# reads the rates from the specified location

# exchange 100 CAD to USD as usual
eu_bank.exchange_with(, "CAD"), "USD") #, "USD")

Note on Patches/Pull Requests

  • Fork the project.

  • Make your feature addition or bug fix.

  • Add tests for it. This is important so I don't break it in a future version unintentionally.

  • Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)


Copyright © 2010 RubyMoney. See LICENSE for details.