> For the complete documentation index, see [llms.txt](https://docs.wem.io/platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wem.io/platform/wemreference/functions/concepts/toconcept.md).

# ToConcept

{% hint style="info" %}
The **`ToConcept()`** function returns the concept with the given Local Name or Concept Id.

Be aware that using this function with a Local Name, this can only work if the local name used is unique in the total ontology collection. If there are more than one concept with the same local name that you are looking for, the ToConcept will not work because it searches through all of the Ontology and expects only 1 specific result to return as Concept. 

For finding concepts when local name may not be unique and you want to search within a specific parent, we recommend using one of the other Concept Functions available, where you can search more specifically, like [FindConcepts](/platform/wemreference/functions/concepts/findconcepts.md) or [GetChildren](/platform/wemreference/functions/concepts/getchildren.md).

[*Read general information about Concepts and Ontology*](/platform/wemmodeler/concepts-and-concept-queries/concepts.md)

This function is NOT SQL compatible. For more information about SQL compatibility, see our [documentation](/platform/wemreference/sql-compatibility.md).
{% endhint %}

{% hint style="success" %}
Returns the <mark style="color:green;">concept</mark> that is found with the given argument.

Returns <mark style="color:red;">**`Unknown`**</mark> if:&#x20;

* the parameter is unknown;
* if no concept can be found for the provided parameter;
* if there are multiple matches for the provided parameter (local name).
  {% endhint %}

### Syntax

<details>

<summary><code>ToConcept(</code><mark style="color:blue;"><code>localname</code></mark><code>)</code></summary>

`ToConcept("dutch")`\
\&#xNAN;*=>Result: 'Languages'.'Dutch'*

`ToConcept("status")`\
\&#xNAN;*=>Result: unknown when there are multiple concepts with localname status in different parts of the ontology*

`ToConcept(unknownstring)`\
\=>*Result: unknown*

</details>

<details>

<summary><code>ToConcept(</code><mark style="color:blue;"><code>id</code></mark><code>)</code></summary>

`ToConcept(1467668)`\
\&#xNAN;*=>Result: 'Languages'.'Dutch'*

`ToConcept(unknownnumber)`\
\=>*Result: unknown*

</details>

### Parameters

<table><thead><tr><th width="150">Name</th><th width="150">Type</th><th width="150" align="center">Required</th><th width="248.15953250810662">Description</th><th data-hidden>Required?</th></tr></thead><tbody><tr><td><mark style="color:blue;"><code>localname</code></mark></td><td>text</td><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2611">☑️</span></td><td>text that is used to search the local name of a concept</td><td>yes</td></tr><tr><td><mark style="color:blue;"><code>id</code></mark></td><td>numeric</td><td align="center"><span data-gb-custom-inline data-tag="emoji" data-code="2611">☑️</span></td><td>number that is used to search concept by Concept Id</td><td>yes</td></tr></tbody></table>


---

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