When was the last time you thought to yourself “I wonder how many acetabulas it takes to equal one gallon?” Well, if you had the free (and portable) ESBUnitConv app you wouldn’t have to wonder any longer, and instead you’d be able to spend more time pondering why you can’t get a date.

Putting Ancient Roman measurements aside, ESBUnitConv is a great app. It has a database of 582 different units that are spread across 21 different categories. The categories include:

  • Acceleration, angles, area, distance, energy, flow, flow (mass), force, fuel consumption, illumination, luminous intensity, mass, power, pressure, quantity, radioactivity, temperature, time, torque, velocity, and volume.

The interface, while not necessarily optimal, does put all of the unit conversions just a few clicks away. As you can imagine there isn’t much to say about an app like this that isn’t already said in the screenshot above.

ESBUnitConv Homepage (Windows only; Freeware)