---
type: "fhirpath-function"
title: "FHIRPath Function: convertsToLong"
function: "convertsToLong"
category: "Conversion"
section: "5.5.3.4"
source: "fhirpath/functions.json"
---
# FHIRPath Function: convertsToLong
_No canonical section match found in index.md._
## Summary
- **Category**: Conversion
- **Section**: `5.5.3.4`
- **Return Type**: `Boolean`
- **Empty Input Result**: `empty`
- **Errors on Multiple Input**: `true`
## Description
If the input collection contains a single item, this function will return true if the item can be converted to a Long value.
## Arguments
- none
## Type Mapping
- `Any-Boolean`
## Example
```fhirpath
'123'.convertsToLong() // returns true
'abc'.convertsToLong() // returns false
```