AccelWare Unit Conversion Tool

AccelWare Unit Conversion Tool is a powerful, intuitive and easy-to-use utility for quick and accurate conversion between almost every possible units of measure, from one system to another. The latest version includes more than 2200 units in 78 categories.
The categories include: length, area, speed, mass, numbers, volume, dry volume, time, density, force, pressure, energy, power, flow, temperature, angle, light, fractions, data transfer, data storage, and more!
Features include: high accuracy with support of the number of decimal places to display, ability to save results in log, clean interface with support of Windows XP themes and many more.