diff --git a/Convert-XLSToXLSX b/Convert-XLSToXLSX
new file mode 100644
index 0000000..5cfea92
--- /dev/null
+++ b/Convert-XLSToXLSX
@@ -0,0 +1,48 @@
+Function Convert-XLSToXLSX {
+[CmdletBinding()]
+PARAM
+(
+    [parameter(Mandatory=$true, ValueFromPipeline)]
+    [ValidateScript({
+        if(-Not ($_ | Test-Path) ){
+            throw "File not found" 
+        }
+        if(-Not ($_ | Test-Path -PathType Leaf) ){
+            throw "Folder paths are not allowed"
+        }
+        return $true
+    })]
+    [string]$Path,
+    [parameter(Mandatory=$false)]
+    [switch]$Force
+)
+    $xlFixedFormat = 51 #Constant for XLSX Workbook
+    $xlsFile = Get-Item -Path $Path
+    $xlsxPath = "{0}x" -f $xlsFile.FullName
+
+    if($xlsFile.Extension.ToLower() -ne ".xls"){
+        throw "Expected .xls extension"
+    }
+
+    if(Test-Path -Path $xlsxPath){
+        if($Force){
+            Remove-Item $xlsxPath -Force
+            Write-Verbose $("Removed {0}" -f $xlsxPath)
+        } else {
+            throw "{0} already exists!" -f $xlsxPath
+        }
+    }
+    
+    try{    
+        $Excel = New-Object -ComObject "Excel.Application"
+    } catch {
+        throw "Could not create Excel.Application ComObject. Please verify that Excel is installed."
+    }
+
+    $Excel.Visible = $false
+    $Excel.Workbooks.Open($xlsFile.FullName) | Out-Null
+    $Excel.ActiveWorkbook.SaveAs($xlsxPath, $xlFixedFormat)
+    $Excel.ActiveWorkbook.Close()
+    $Excel.Quit()
+}
+