Unit Converter tools

Unit Converter is a tools, Medical, Scientific or Engineering calculator for converting from one unit to another.
It is categorized as into the following four menu:
Basic: Length, Area, Weight & Volume.
Living: (favorite) Temperature, Time, Speed, Shoe sizes, cloth sizes and other wearable sizes. with 4 sub menu allowed at a time
Science: Work, power, current, Voltage... etc. as selected from favorite menu
Misc.: Time Zone, Binary, Radiation, Angle, Data, Fuel etc. as only 4 sub-menu can be displayed at a time.
This Unit Converter contains a calculator keyboard interface for inputting value on the go, which can be hidden/un-hide when needed.
UNIT CONVERTER TOOLS also reserve other unit in favorite menu(love shape icon) to manage display space.