A free program for Android, by Mind Spark Technologies.
A conversion calculator that is not only capable of converting between various units of measurement, but also provides notational conversions. This means that you can use it to convert from one unit to another, and it will provide you with the result in notations, so you don't have to remember the results. The conversion calculator is capable of converting from many different units of measurement, such as meters, kilometers, feet, inches, yards, and more. It is also capable of converting between different notations, such as kilometers and miles, feet and inches, and more.
It has a user-friendly interface, so even if you don't have much knowledge about mathematics and units of measurement, you can still use it to do the conversion for you.
