types of units :Lenght : "metre", "furlong", "inch", "foot", "fathom", "yard", "rod", "pole", "mile", "nautic mile", "league", "angstrom", "micron", "li", "yin", "ri", "cho" ,"shaku", "parsec", "light-year".
Area : "cm²", "m²", "Km²", "Ha", "in²", "ft²", "yd²", "rod²", "acre", "mi²", "qing", "li", "fang chi", "shaku", "tsubo", "cho".
Volume : "m³", "hectolitre", "litre", "barrel(petroleum)", "gallon", "barrel(dry)", "bushel", "gallon(dry)", "imperial barrel(dry)", "imperial bushel", "imperial gallon", "shaku", "sho", "koku", "dan", "sheng", "shao".Angle : "sextant", "rad", "deg", "grad", "minute", "second".
Speed : "m/s", "km/s", "km/h", "mi/s", "mi/h", "ft/s", "knot", "yd/s".
Angular Velocity : "r.p.s", "rad/s", "rad/min", "rad/h", "r.p.m", "r.p.h".
Acceleration : "m/s²", "km/s²", "mi/s²", "ft/s²", "in/s²", "yd/s²".
Mass : "Kg", "gram", "carat", "newton", "Kilonewton", "Quintal(Metric)", "ton", "ton (Imperial)", "ton(USA)", "quintal(Imperial)", "quintal(USA)", "pound", "slug", "ounce", "drachm", "grain", "pound(Troy)", "ounce(Troy)", "pennyweight", "carat(Troy)" , "drachm(Troy)", "atomic mass unit", "kanme", "kin", "hyakume", "monnme", "fun", "dan", "jin", "liang", "qian", "fen", "li", "hao", "si", "hu".
Flow Liquid : "m³/s", "m³/min", "m³/h", "lt/s", "lt/min", "lt/h", "barrels/sec", "barrels/min", "barrels/h", "barrels/dia", "gallons(USA)/sec", "gallons(Imperial)/sec", "gallons(USA)/min", "gallons(USA)/h", "gallons(Imperial)/min", "gallons(Imperial)/h", "ft³/s" ,"ft³/min" ,"ft³/h" ,"in³/s" ,"in³/min" ,"in³/h".
Flow Mass : "Kg/sec", "Kg/min", "Kg/h", "g/sec", "MT/min", "MT/h", "NT(Imperial)/h", "NT(USA)/h", "lb/sec", "lb/min", "ounce/sec", "slug/sec", "slug/min".
Density : "Kg/m³", "g/m³", "g/Lt", "mg/Lt", "g/cm³", "g/mL", "mg/mL", "lb/ft³", "lb/in³", "lb/gal(USA)", "lb/gal(Imperial)", "ounces/ft³", "ounces/in³", "slug/ft³", "slug/in³", "Planck Density".
Force : "Newton", "dyne", "kgf", "kilopound", "lbf", "poundal", "Planck Force".
Specific Weight : "N/m³", "dyn/cm³", "gf/lt", "gf/cm³", "kgf/m³", "kgf/cm³", "kgf/in³", "kgf/ft³", "lb/in³", "lb/ft³".
Pressure : "Pascal", "Milibar", "mm of Hg.[0 C](Torricelli)", "atm", "cm of Hg [0°C]", "cm of H2O [0°C]", "ft of H2O[39.2 °F]", "in of Hg [32 °F]", "in of Hg [60 °F]", "in of H2O [39.2 °F]", "in of H2O [60 °F]", "Psi (lbf/in²)", "lbf/ft²", "dyn/cm²", "kgf/m²", "N/m²", "kN/m²".
Kinematic Viscosity : "m²/s", "m²/min", "m²/h", "Stokes (St)", "Centistokes (cSt)", "cm²/min", "cm²/h", "in²/s", "in²/min", "in²/h", "ft²/s", "ft²/min", "ft²/h".
Dynamic Viscosity : "N.s/m²", "Poise (Po)", "Centipoise (cPo)", "lb/s.ft", "lb/h.ft", "slug/s.ft", "slug/s.in", "kgf·s/m²", "lbf.s/in²", "lbf.s/ft²", "lbf.h/ft²”.
Torque : "N.m", "dyn.cm", "kilogram-meters (kgf.m)", "lbf.ft".