Converter full review
Converter by UnitConvertr offers a simple but colourful interface, which is the highlight of this conversion tool. The application supports 109 units in nine categories, including bits and bytes, links, leagues, astronomical units and even light-years. Incredibly, though, there is no currency converter.
But the advantage of Converter is that it displays all possible conversions. So entering one for kilograms, produces units in grams, milligrams, pounds, ounces, short and long tons, tons, and grains on the same page. One minor drawback is that you sometimes need to scroll to find the conversion you were looking for. A nice fix would let the user change the order in which the units appear.