diff --git a/Utils/Converter/FileSizeType.php b/Utils/Converter/FileSizeType.php
index e40962f53..90c8c707d 100644
--- a/Utils/Converter/FileSizeType.php
+++ b/Utils/Converter/FileSizeType.php
@@ -15,6 +15,7 @@ declare(strict_types=1);
 namespace phpOMS\Utils\Converter;
 
 use phpOMS\Stdlib\Base\Enum;
+use phpOMS\Utils\Converter\Measurement;
 
 /**
  * File size type enum.
@@ -45,4 +46,26 @@ abstract class FileSizeType extends Enum
     public const KILOBIT = 'kbit';
 
     public const BIT = 'bit';
+
+    /**
+     * Auto format file size in bytes
+     *
+     * @param float $size File size
+     *
+     * @return array
+     *
+     * @since 1.0.0
+     */
+    public static function autoFormat(float $size) : array
+    {
+        if ($size < 300) {
+            return [$size, 'B'];
+        } elseif ($size < 1000) {
+            return [Measurement::convertFileSize($size, FileSizeType::BYTE, FileSizeType::KILOBYTE), 'KB'];
+        } elseif ($size < 1000 * 1000 * 1000) {
+            return [Measurement::convertFileSize($size, FileSizeType::BYTE, FileSizeType::MEGABYTE), 'MB'];
+        }
+
+        return [Measurement::convertFileSize($size, FileSizeType::BYTE, FileSizeType::GIGABYTE), 'GB'];
+    }
 }
diff --git a/tests/Utils/Converter/FileSizeTypeTest.php b/tests/Utils/Converter/FileSizeTypeTest.php
index b8ac157d3..479e4450e 100644
--- a/tests/Utils/Converter/FileSizeTypeTest.php
+++ b/tests/Utils/Converter/FileSizeTypeTest.php
@@ -17,6 +17,8 @@ namespace phpOMS\tests\Utils\Converter;
 use phpOMS\Utils\Converter\FileSizeType;
 
 /**
+ * @testdox phpOMS\tests\Utils\Converter\FileSizeTypeTest: File size types
+ *
  * @internal
  */
 class FileSizeTypeTest extends \PHPUnit\Framework\TestCase
@@ -56,4 +58,32 @@ class FileSizeTypeTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('kbit', FileSizeType::KILOBIT);
         self::assertEquals('bit', FileSizeType::BIT);
     }
+
+    /**
+     * @testdox File sizes can get automatically formatted according to their size
+     * @covers phpOMS\Utils\Converter\FileSizeType
+     * @group framework
+     */
+    public function testAutoFormat() : void
+    {
+        self::assertEquals(
+            [250.0, 'B'],
+            FileSizeType::autoFormat(250)
+        );
+
+        self::assertEquals(
+            [0.5, 'KB'],
+            FileSizeType::autoFormat(500)
+        );
+
+        self::assertEquals(
+            [1.024, 'MB'],
+            FileSizeType::autoFormat(1024 * 1000)
+        );
+
+        self::assertEquals(
+            [1.024, 'GB'],
+            FileSizeType::autoFormat(1024 * 1000 * 1000)
+        );
+    }
 }