diff --git a/archive/p/powershell/Factorial.ps1 b/archive/p/powershell/Factorial.ps1
new file mode 100644
index 000000000..e9c12caf5
--- /dev/null
+++ b/archive/p/powershell/Factorial.ps1
@@ -0,0 +1,29 @@
+function Show-Usage() {
+    Write-Host "Usage: please input a non-negative integer"
+    Exit 1
+}
+
+function Get-Factorial([int]$Value) {
+    $Product = 1
+    if ($Value -gt 0) {
+        1..$Value | ForEach-Object { $Product *= $_ }
+    }
+
+    $Product
+}
+
+if ($args.Length -lt 1) {
+    Show-Usage
+}
+
+try {
+    $Value = [int]::Parse($args[0])
+} catch {
+    Show-Usage
+}
+
+if ($Value -lt 0) {
+    Show-Usage
+}
+
+Write-Host (Get-Factorial $Value)