---
type: "fhirpath-function"
title: "FHIRPath Function: toDate"
function: "toDate"
category: "Conversion"
section: "5.5.4.2"
source: "fhirpath/functions.json"
---
# FHIRPath Function: toDate
_No canonical section match found in index.md._
## Summary
- **Category**: Conversion
- **Section**: `5.5.4.2`
- **Return Type**: `Date`
- **Empty Input Result**: `empty`
- **Errors on Multiple Input**: `true`
## Description
If the input collection contains a single item, this function will return a single date if the item is a Date, a DateTime, or a String convertible to a Date.
## Arguments
- `format` (optional): `String` - Optional format template for parsing string input (STU). Uses date/datetime format codes when provided instead of the default format.
## Type Mapping
- `Date-Date`
- `DateTime-Date`
- `String-Date`
## Example
```fhirpath
'2022-01-01'.toDate() // returns @2022-01-01
```