> For the complete documentation index, see [llms.txt](https://boxlang.ortusbooks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/decision/isnumeric.md).

# IsNumeric

Tests whether a value is numeric

## Method Signature

```
IsNumeric(string=[any], locale=[string])
```

### Arguments

| Argument | Type     | Required | Description                                                                                     | Default |
| -------- | -------- | -------- | ----------------------------------------------------------------------------------------------- | ------- |
| `string` | `any`    | `true`   |                                                                                                 |         |
| `locale` | `string` | `false`  | Optional locale string, otherwise the context locale default is used when parsing string values |         |

## Examples

### Simple Lsisnumeric Example

Check whether the string is number or not in locale

[Run Example](https://try.boxlang.io/?code=eJzLKfYs9ivNTS3KTNZQUApJzVNS0LTmAgBZgQaw)

```java
lsIsNumeric( "Ten" );

```

Result: false

### Simple Lsisnumeric Example

Check whether the string is number or not in locale

[Run Example](https://try.boxlang.io/?code=eJzLKfYs9ivNTS3KTNZQUDIxM7dQUtC05gIAXLgGYg%3D%3D)

```java
lsIsNumeric( "4678" );

```

Result: true

### Additional Examples

[Run Example](https://try.boxlang.io/?code=eJwrL8osSc0vLSkoLdFQyCn2LPYrzU0tykzWUFAyNDJWUtBUUFNQskkqsgMyrbnKcatOyyxLJUG5sZ6RIQnKDQwMjUhSrmcANh6%2FMkM9YyNDHQMDNJMV9PUV0hJzilOJ0qujoJSeWpSbmIfuPpAxJUWlqVwAR9doVw%3D%3D)

```java
writeoutput( lsIsNumeric( "123" ) & "<br>" );
writeoutput( lsIsNumeric( "five" ) & "<br>" );
writeoutput( lsIsNumeric( "3.21" ) & "<br>" );
writeoutput( lsIsNumeric( "0012" ) & "<br>" );
writeoutput( lsIsNumeric( "00.01" ) );
writeoutput( lsIsNumeric( "1.321,00" ) & "<br>" ); // false
writeoutput( lsIsNumeric( "1.321,00", "german" ) & "<br>" );
 // true

```

## Related

* [ArrayIsEmpty](/boxlang-language/reference/built-in-functions/decision/arrayisempty.md)
* [arrayIsEmpty](https://github.com/ortus-boxlang/boxlang-docs/tree/v1.x/boxlang-language/reference/built-in-functions/decision/arrayIsEmpty.md)
* [Attempt](/boxlang-language/reference/built-in-functions/decision/attempt.md)
* [IsArray](/boxlang-language/reference/built-in-functions/decision/isarray.md)
* [IsBinary](/boxlang-language/reference/built-in-functions/decision/isbinary.md)
* [IsBoolean](/boxlang-language/reference/built-in-functions/decision/isboolean.md)
* [IsBoxSet](/boxlang-language/reference/built-in-functions/decision/isboxset.md)
* [IsClosure](/boxlang-language/reference/built-in-functions/decision/isclosure.md)
* [IsCustomFunction](/boxlang-language/reference/built-in-functions/decision/iscustomfunction.md)
* [IsDate](/boxlang-language/reference/built-in-functions/decision/isdate.md)
* [IsDateObject](/boxlang-language/reference/built-in-functions/decision/isdateobject.md)
* [IsDebugMode](/boxlang-language/reference/built-in-functions/decision/isdebugmode.md)
* [IsDefined](/boxlang-language/reference/built-in-functions/decision/isdefined.md)
* [IsEmpty](/boxlang-language/reference/built-in-functions/decision/isempty.md)
* [IsFileObject](/boxlang-language/reference/built-in-functions/decision/isfileobject.md)
* [IsIPv6](/boxlang-language/reference/built-in-functions/decision/isipv6.md)
* [IsJSON](/boxlang-language/reference/built-in-functions/decision/isjson.md)
* [IsLeapYear](/boxlang-language/reference/built-in-functions/decision/isleapyear.md)
* [IsLocalHost](/boxlang-language/reference/built-in-functions/decision/islocalhost.md)
* [IsNull](/boxlang-language/reference/built-in-functions/decision/isnull.md)
* [IsNumericDate](/boxlang-language/reference/built-in-functions/decision/isnumericdate.md)
* [IsObject](/boxlang-language/reference/built-in-functions/decision/isobject.md)
* [IsQuery](/boxlang-language/reference/built-in-functions/decision/isquery.md)
* [IsRange](/boxlang-language/reference/built-in-functions/decision/isrange.md)
* [IsSimpleValue](/boxlang-language/reference/built-in-functions/decision/issimplevalue.md)
* [IsStringBuilder](/boxlang-language/reference/built-in-functions/decision/isstringbuilder.md)
* [IsStruct](/boxlang-language/reference/built-in-functions/decision/isstruct.md)
* [IsValid](/boxlang-language/reference/built-in-functions/decision/isvalid.md)
* [IsXML](/boxlang-language/reference/built-in-functions/decision/isxml.md)
* [IsXmlAttribute](/boxlang-language/reference/built-in-functions/decision/isxmlattribute.md)
* [IsXMLDoc](/boxlang-language/reference/built-in-functions/decision/isxmldoc.md)
* [IsXMLElem](/boxlang-language/reference/built-in-functions/decision/isxmlelem.md)
* [IsXMLNode](/boxlang-language/reference/built-in-functions/decision/isxmlnode.md)
* [IsXMLRoot](/boxlang-language/reference/built-in-functions/decision/isxmlroot.md)
* [LSIsNumeric](/boxlang-language/reference/built-in-functions/decision/lsisnumeric.md)
* [structIsEmpty](/boxlang-language/reference/built-in-functions/decision/structisempty.md)


---

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