Versaverter

Versaverter rapidly gained popularity world-wide as the fastest and most complete unit conversion utility around.

Versaverter is a complete re-write of the application using the cross platform Adobe® AIR™ framework.
Versaverter main features: Speed, extensive XML based library of units, automatic updates, and of course the free price tag!
A much improved user interface, cross platform compatibility, additional speed, and dynamic search.
Note: requires Adobe Air.