diff --git a/src/Illuminate/Support/Str.php b/src/Illuminate/Support/Str.php
index 39cefe6054fd..e3a4019c2c13 100644
--- a/src/Illuminate/Support/Str.php
+++ b/src/Illuminate/Support/Str.php
@@ -750,6 +750,10 @@ public static function matchAll($pattern, $subject)
      */
     public static function padBoth($value, $length, $pad = ' ')
     {
+        if (function_exists('mb_str_pad')) {
+            return mb_str_pad($value, $length, $pad, STR_PAD_BOTH);
+        }
+
         $short = max(0, $length - mb_strlen($value));
         $shortLeft = floor($short / 2);
         $shortRight = ceil($short / 2);
@@ -769,6 +773,10 @@ public static function padBoth($value, $length, $pad = ' ')
      */
     public static function padLeft($value, $length, $pad = ' ')
     {
+        if (function_exists('mb_str_pad')) {
+            return mb_str_pad($value, $length, $pad, STR_PAD_LEFT);
+        }
+
         $short = max(0, $length - mb_strlen($value));
 
         return mb_substr(str_repeat($pad, $short), 0, $short).$value;
@@ -784,6 +792,10 @@ public static function padLeft($value, $length, $pad = ' ')
      */
     public static function padRight($value, $length, $pad = ' ')
     {
+        if (function_exists('mb_str_pad')) {
+            return mb_str_pad($value, $length, $pad, STR_PAD_RIGHT);
+        }
+
         $short = max(0, $length - mb_strlen($value));
 
         return $value.mb_substr(str_repeat($pad, $short), 0, $short);