This App is very useful and expertly unit converter * Convenient comparative : One unit is able to compare with all other units at the same time. * Uncomplicated interface : It is simple and powerful. Everyone can be used easily. * Extensive units : 6 classification, 47 types and 755 units. - Common & Basics : Length, Area, Volume, Time, Angle, Mass, Velocity, Temperature, Metric Prefix - General Dynamics : Acceleration, Density, Flow, Force, Pressure, Viscosity, Kinematic Viscosity, Specific Volume, Surface Tension, Sperific Weight, Mass Flow Rate Diffusion Coefficient - Heat & Energy : Energy or Torque, Poer, Specific Heat or Entropy, Enthalpy, Heat Conductivity, Heat Flux, Thermal Resistance, Thermal Resistivity, Rate Of Calorification, Thermal Capacity - Electromagnetic & Optics : Electric Current, Electric Charge, Electric Dipole, Voltage, Megnetic Flux, Magnetic Field, Inductance, Luminance, Illuminance - Information Data : Data Storage, Data Rate, Information Entropy - Radiation : Radioactivity, Exposure, Absorbed Dose, Equivalent Dose If you want to add other units or function, please send me mail related information.