units

User defined units

User-defined units are derived from the built-in units by their declaration in the document. Later, this document can be added to the list of include files.

Example:

The units are defined based on the default dimension "m." Later, it is shown how they are used. When the result calculation is in progress, the necessary unit is selected.

These units serve as a basis for calculating exponent units:

The nearest result measure is selected automatically.

 

Units that are more complicated are composed from simple ones.

 

Example: Read more »

Built-in units

Built-in units contain most of the base and additional SI system units:

  • m - meter;
  • s - second;
  • kg - kilogram;
  • A - ampere;
  • K - kelvin;
  • cd - candela;
  • mol - mole;
  • rad - radian;
  • sr - steradian.

These units serve as the basis for the derivation of all the other user units of all unit systems.

Main rules

  • Units have to be used only after their declaration.
  • While defining and using units, the system name is displayed in the unit index.
  • The unit system cannot be defined explicitly. It is declared during its first use.
  • Units can be declared in any part of the document.
  • Units declared in the include files are considered declared above the first line of the current document. Therefore, they can be used beginning from the first edit line.
  • When the unit system is not declared, the metric system is used by default.
  • If you perform calculations in a particular unit system, you must declare all the units used in your expression.
  • While using the unit declared in one system, there is no need to declare another units system if it is the same.

Basic info

Natural Calculator units of measurement and systems of units. Units are defined by the symbol ("~" key). Units are declared before their first use. You can declare any complex units by assigning names to them. Later, when the expression contains units, the result will be shown closest to the best matching unit. Units used  in scientific, fraction, and complex numbers. Integers do not have units.  Read more »