diff --git a/wp-admin/includes/template.php b/wp-admin/includes/template.php
index bee7befa48..f97798c61b 100644
--- a/wp-admin/includes/template.php
+++ b/wp-admin/includes/template.php
@@ -776,7 +776,7 @@ function wp_dropdown_roles( $selected = false ) {
  */
 function wp_import_upload_form( $action ) {
 	$bytes = apply_filters( 'import_upload_size_limit', wp_max_upload_size() );
-	$size = wp_convert_bytes_to_hr( $bytes );
+	$size = size_format( $bytes );
 	$upload_dir = wp_upload_dir();
 	if ( ! empty( $upload_dir['error'] ) ) :
 		?><div class="error"><p><?php _e('Before you can upload your import file, you will need to fix the following error:'); ?></p>
diff --git a/wp-includes/deprecated.php b/wp-includes/deprecated.php
index 32acbf88fb..e89332f53a 100644
--- a/wp-includes/deprecated.php
+++ b/wp-includes/deprecated.php
@@ -3364,3 +3364,18 @@ function gd_edit_image_support($mime_type) {
 	}
 	return false;
 }
+
+/**
+ * Converts an integer byte value to a shorthand byte value.
+ *
+ * @since 2.3.0
+ * @deprecated 3.6.0
+ * @deprecated Use size_format()
+ *
+ * @param int $bytes An integer byte value.
+ * @return string A shorthand byte value.
+ */
+function wp_convert_bytes_to_hr( $bytes ) {
+	_deprecated_function( __FUNCTION__, '3.6', 'size_format()' );
+	return size_format( $bytes );
+}
diff --git a/wp-includes/media.php b/wp-includes/media.php
index f4e13a4a9b..f1f373735e 100644
--- a/wp-includes/media.php
+++ b/wp-includes/media.php
@@ -1129,22 +1129,6 @@ function wp_convert_hr_to_bytes( $size ) {
 	return $bytes;
 }
 
-/**
- * Converts an integer byte value to a shorthand byte value.
- *
- * @since 2.3.0
- *
- * @param int $bytes An integer byte value.
- * @return string A shorthand byte value.
- */
-function wp_convert_bytes_to_hr( $bytes ) {
-	$units = array( 0 => 'B', 1 => 'kB', 2 => 'MB', 3 => 'GB' );
-	$log   = log( $bytes, 1024 );
-	$power = (int) $log;
-	$size  = pow( 1024, $log - $power );
-	return $size . $units[$power];
-}
-
 /**
  * Determine the maximum upload size allowed in php.ini.
  *