> ## Documentation Index
> Fetch the complete documentation index at: https://ps365.clidsys.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Convert-EntraObjectIDAndSID

## SYNOPSIS

Converts between Microsoft Entra ID SID and Object ID formats.

## SYNTAX

```powershell theme={null}
Convert-EntraObjectIDAndSID [-Value] <String> [-ProgressAction <ActionPreference>] [<CommonParameters>]
```

## DESCRIPTION

Automatically detects whether the input is a SID (S-1-12-1-...) or an Object ID (GUID)
and converts it to the other format.

* SID (S-1-12-1-...) → returns the corresponding Object ID (GUID)
* Object ID (GUID)   → returns the corresponding SID (S-1-12-1-...)

## EXAMPLES

### EXAMPLE 1

```powershell theme={null}
Convert-EntraObjectIDAndSID -Value "S-1-12-1-1234567890-987654321-1122334455-5544332211"
```

Converts the given SID to its corresponding Object ID (GUID).

### EXAMPLE 2

```powershell theme={null}
Convert-EntraObjectIDAndSID -Value "a1b2c3d4-e5f6-7890-abcd-ef1234567890"
```

Converts the given Object ID to its corresponding SID.

### EXAMPLE 3

```powershell theme={null}
"S-1-12-1-1234567890-987654321-1122334455-5544332211", "a1b2c3d4-e5f6-7890-abcd-ef1234567890" | Convert-EntraObjectIDAndSID
```

Converts multiple values via pipeline input.

## PARAMETERS

### -Value

The SID or Object ID to convert.
Accepts pipeline input.

* SID format:       S-1-12-1-\{4 decimal numbers separated by dashes}
* Object ID format: GUID (e.g., xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)

```yaml theme={null}
Type: String
Parameter Sets: (All)
Aliases:

Required: True
Position: 1
Default value: None
Accept pipeline input: True (ByValue)
Accept wildcard characters: False
```

### CommonParameters

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable. For more information, see [about\_CommonParameters](http://go.microsoft.com/fwlink/?LinkID=113216).

## INPUTS

## OUTPUTS

## NOTES

Entra ID uses a specific SID format: S-1-12-1-\{4 UInt32 components derived from the GUID bytes}.
This conversion is bijective: SID \<-> ObjectID.

## RELATED LINKS

[https://ps365.clidsys.com/docs/commands/Convert-EntraObjectIDAndSID](https://ps365.clidsys.com/docs/commands/Convert-EntraObjectIDAndSID)