Calculate with Bitcoin, altcoins and fiat currencies securely and privately on your own computer.
Version: 2Easy Bitcoin Currency Converter is the perfect utility desktop application for anyone who needs to conveniently and safely convert back and forth between Bitcoin / altcoins and fiat currencies.
Operating System: Windows
It lets you perform any currency conversion locally by typing a simple (or complex, if need be) expression, such as '0.5 BTC in USD' or '14 EUR + 1 BTC in USD', all while respecting your privacy; no data whatsoever is sent out from your computer except the one necessary signal to securely fetch the latest rates from our servers. It also works offline by using the last loaded rates.
You will love the slick, polished interface with just the right amount of truly logical, natural features, and the powerful underlying math engine further supports numerous non-monetary units, allowing for all sorts of useful conversions in the same manner, such as '1 cup to dl', always without sending your private calculations to a third party. And on top of all that, it's now free of charge!
Version 2: This version (2) is the first free version. Version 1 used to be sold. There are numerous small improvements, and a text 'ad' (currently just asking for donations, and will never link to anything fishy/evil) was added.