diff --git a/.zsh/functions/img2iso b/.zsh/functions/img2iso
new file mode 100644
index 0000000..462d607
--- /dev/null
+++ b/.zsh/functions/img2iso
@@ -0,0 +1,16 @@
+function img2iso () {
+  if [ -z "$1" ]; then
+    # display usage if no parameters given
+    echo "Usage: img2iso <file_name>"
+    return 1
+  else
+    if [ -f "$1" ] ; then
+      filename=`basename $1 .img`
+      hdiutil convert ${filename}.img -format UDTO -o ${filename}.iso
+      mv ${filename}.iso.cdr ${filename}.iso
+    else
+        echo "'$n' - file does not exist"
+        return 1
+    fi
+  fi
+}
diff --git a/.zsh/lib/functions.zsh b/.zsh/lib/functions.zsh
index c0dd413..597741c 100644
--- a/.zsh/lib/functions.zsh
+++ b/.zsh/lib/functions.zsh
@@ -1,3 +1,4 @@
 fpath+=$ZDOTDIR/functions
 
 autoload extract
+autoload img2iso