Convert Unit

If the input is a pure number (a number with no units), the output is a physical number with the specified unit. If the input is a physical number, then the value will be converted to the specified unit but the output will be a pure number. To remove the unit from a physical number, configure the function to the same unit as the input. To configure the unit, enter it directly on the diagram or right-click the function and select Build Unit String from the shortcut menu to build and edit a string of units.


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Inputs/Outputs

  • cdbl.png

    x is a floating-point number with or without a unit.

  • idbl.png

    y is a floating-point number that has a unit if x does not have a unit. y does not have a unit if x does have a unit.

  • Edit the unit string by using the Labeling or Operating tool to highlight the string and entering a new string. You also can right-click the function and select Build Unit String from the shortcut menu to display the Build Unit String dialog box. The unit you enter must be a unit available in LabVIEW.

    If the input is a physical number measured in a compatible unit, the output is a pure number measured in the unit specified. For example, if x is 37 meters (m), and you enter m (meters) as the unit in the Convert Unit function, y is 37 with no associated units. If x is 37 meters and you enter ft (feet) as the unit in the Convert Unit function, y is 121.36 with no associated units.

    If the input is a pure number, LabVIEW assigns the unit you specify in the Convert Unit function to the number and returns that physical number in the base unit (or a combination of base units) for that class of measurement, as indicated in the following table.

    Class Base Unit Abbreviation
    amount of substance mole mol
    angle (plane) radian rad
    angle (solid) steradian sr
    electric current ampere A
    length meter m
    luminous intensity candela cd
    mass kilogram kg
    temperature (thermodynamic) kelvin K
    time second s

    For example, if x is 10 and you enter s (seconds) as the unit in the Convert Unit function, y is 10 seconds because seconds is the base unit LabVIEW uses to measure time. If x is 10 and you enter min (minutes) as the unit in the Convert Unit function, y is 600 seconds. You then can change the unit the indicator displays to show minutes, hours, or any other unit of time.