API Reference > imodeljs-Quantity > Quantity > FormatterSpec > constructor constructor Method Constructor FormatterSpec(name: string, format: Format, conversions?: UnitConversionSpec[], persistenceUnit?: UnitProps): FormatterSpec Parameter Type Description name string The name of a format specification. format Format Defines the output format for the quantity value. conversions UnitConversionSpec[] An array of conversion factors necessary to convert from an input unit to the units specified in the format. persistenceUnit UnitProps The unit the magnitude value is input. Returns - FormatterSpec Defined in quantity/src/Formatter/FormatterSpec.ts Line 32 Last Updated: 12 June, 2024