Perfect!

For anyone using such tools in daily life, this is the App to have! As an engineer working in a global company, dealing with suppliers and customers all over the world, I can easily say that this has been the most useful application I have bought.
The interface is easy and functional. Exchange rates are updated automatically. The library covers almost every currency and unit you would need. Definitely a 5 star application!

Lhurgoyf about Units - Unit Converter for your iPhone