diff --git a/README.md b/README.md
index edb7923..523e878 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 <h1 align="center"> Laravel Query Logger </h1>
 
-<p align="center"> :pencil: A dev tool to log all queries for Laravel application.</p> 
+<p align="center"> :pencil: A dev tool to log all queries for Laravel application.</p>
 
 ## Installing
 
@@ -13,14 +13,14 @@ $ composer require overtrue/laravel-query-logger --dev -vvv
 ## Usage
 
 ```shell
-$ tail -f ./storage/logs/laravel.log 
+$ tail -f ./storage/logs/laravel.log
 ```
 
     [2017-09-05 14:52:13] local.INFO: ============ URL: http://laravel.app/discussions ===============
-    [2017-09-05 14:52:14] local.INFO: [5.0083ms] select count(*) as aggregate from `discussions` where `discussions`.`deleted_at` is null
-    [2017-09-05 14:52:14] local.INFO: [7.0212ms] select * from `discussions` where `discussions`.`deleted_at` is null order by `is_top` desc, `created_at` desc limit 15 offset 0
-    [2017-09-05 14:52:14] local.INFO: [12.4282ms] select `tags`.*, `taggables`.`taggable_id` as `pivot_taggable_id`, `taggables`.`tag_id` as `pivot_tag_id` from `tags` inner join `taggables` on `tags`.`id` = `taggables`.`tag_id` where `taggables`.`taggable_id` in ('1', '2', '3', '4', '5', '6', '7', '8') and `taggables`.`taggable_type` = 'App\\Models\\Discussion' order by `order_column` asc
-    [2017-09-05 14:52:14] local.INFO: [3.1729ms] select * from `users` where `users`.`id` in ('1', '2', '4') and `users`.`deleted_at` is null
+    [2017-09-05 14:52:14] local.DEBUG: [800μs] select count(*) as aggregate from `discussions` where `discussions`.`deleted_at` is null
+    [2017-09-05 14:52:14] local.DEBUG: [1.07ms] select * from `discussions` where `discussions`.`deleted_at` is null order by `is_top` desc, `created_at` desc limit 15 offset 0
+    [2017-09-05 14:52:14] local.DEBUG: [3.63s] select `tags`.*, `taggables`.`taggable_id` as `pivot_taggable_id`, `taggables`.`tag_id` as `pivot_tag_id` from `tags` inner join `taggables` on `tags`.`id` = `taggables`.`tag_id` where `taggables`.`taggable_id` in ('1', '2', '3', '4', '5', '6', '7', '8') and `taggables`.`taggable_type` = 'App\\Models\\Discussion' order by `order_column` asc
+    [2017-09-05 14:52:14] local.DEBUG: [670μs] select * from `users` where `users`.`id` in ('1', '2', '4') and `users`.`deleted_at` is null
     ...
 ## License
 
diff --git a/src/ServiceProvider.php b/src/ServiceProvider.php
index 5087460..78f5aee 100644
--- a/src/ServiceProvider.php
+++ b/src/ServiceProvider.php
@@ -30,8 +30,9 @@ public function boot()
             $bindings = $query->connection->prepareBindings($query->bindings);
             $pdo = $query->connection->getPdo();
             $realSql = vsprintf($sqlWithPlaceholders, array_map([$pdo, 'quote'], $bindings));
+            $duration = $this->formatDuration($query->time / 1000);
 
-            Log::debug(sprintf('[%.4fms] %s', (\microtime(true) - LARAVEL_START) * 1000, $realSql));
+            Log::debug(sprintf('[%s] %s', $duration, $realSql));
         });
     }
 
@@ -41,4 +42,22 @@ public function boot()
     public function register()
     {
     }
+
+    /**
+     * Format duration.
+     *
+     * @param float $seconds
+     *
+     * @return string
+     */
+    private function formatDuration($seconds)
+    {
+        if ($seconds < 0.001) {
+            return round($seconds * 1000000) . 'μs';
+        } elseif ($seconds < 1) {
+            return round($seconds * 1000, 2) . 'ms';
+        }
+
+        return round($seconds, 2) . 's';
+    }
 }