---
type: "fhir-fhirpath-function"
title: "FHIR FHIRPath Function: %factory.Quantity"
source: "source/fhirpath.html"
---

# FHIR FHIRPath Function: %factory.Quantity

This page is part of **FHIR FHIRPath** (FHIR-specific extensions). Base spec lives at [FHIRPath](/fhirpath).

`%factory.Quantity(system, code, value, unit) : Quantity`

Creates a Quantity: `%factory.Quantity('http://unitsofmeasure.org', 'mg/dL', '5.03', 'mg/dL')`

Parameters:

-   **system**: a string value that goes in Quantity.system
-   **code**: a string value that goes in Quantity.code
-   **value**: a string or decimal value that goes in Quantity.value
-   **unit**: a string value that goes in Quantity.unit

**Return Value:** a Quantity.

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