Conversion of Unit

Physics

definition

Conventions for writing SI units

The conventions followed while writing SI units:
  • Only units of the SI and those units recognised for use with the SI should be used to express the values of quantities.
  • All unit names are written in small letters (newton or kilogram) except Celsius.
  • The unit symbol is in lower case unless the name of the unit is derived from a proper name, in which case the first letter of the symbol is in upper case.
  • Unit symbols are unaltered in the plural.
  • Unit symbols and unit names should not be mixed.
  • Abbreviations such as sec (for either s or second) or mps (for either m/s or meter per second are not allowed.
  • For unit values more than 1 or less than -1 the plural of the unit is used and a singular unit is used for values between 1 and -1.
  • A space is left between the numerical value and unit symbol (25 kg, but not 25-kg or 25kg). If the spelled-out name of a unit is used, the normal rules of English are applied.
  • Unit symbols are in roman type, and quantity symbols are in italic
    type with superscripts and subscripts in roman or italic type as
    appropriate.