diff --git a/src/Symfony/Component/BrowserKit/CHANGELOG.md b/src/Symfony/Component/BrowserKit/CHANGELOG.md
index 41301b9258ad7..a730a86bf4e70 100644
--- a/src/Symfony/Component/BrowserKit/CHANGELOG.md
+++ b/src/Symfony/Component/BrowserKit/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+6.1
+---
+
+ * Add `toArray` method to `Response`
+
 5.3
 ---
 
diff --git a/src/Symfony/Component/BrowserKit/Exception/JsonException.php b/src/Symfony/Component/BrowserKit/Exception/JsonException.php
new file mode 100644
index 0000000000000..b62dbcbba3e54
--- /dev/null
+++ b/src/Symfony/Component/BrowserKit/Exception/JsonException.php
@@ -0,0 +1,16 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\BrowserKit\Exception;
+
+class JsonException extends \JsonException
+{
+}
diff --git a/src/Symfony/Component/BrowserKit/Response.php b/src/Symfony/Component/BrowserKit/Response.php
index 3f669e423199a..5b0789d57c98b 100644
--- a/src/Symfony/Component/BrowserKit/Response.php
+++ b/src/Symfony/Component/BrowserKit/Response.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\BrowserKit;
 
+use Symfony\Component\BrowserKit\Exception\JsonException;
+
 /**
  * @author Fabien Potencier <fabien@symfony.com>
  */
@@ -19,6 +21,7 @@ final class Response
     private string $content;
     private int $status;
     private array $headers;
+    private array $jsonData;
 
     /**
      * The headers array is a set of key/value pairs. If a header is present multiple times
@@ -87,4 +90,23 @@ public function getHeader(string $header, bool $first = true): string|array|null
 
         return $first ? null : [];
     }
+
+    public function toArray(): array
+    {
+        if (isset($this->jsonData)) {
+            return $this->jsonData;
+        }
+
+        try {
+            $content = json_decode($this->content, true, flags: \JSON_BIGINT_AS_STRING | \JSON_THROW_ON_ERROR);
+        } catch (\JsonException $e) {
+            throw new JsonException($e->getMessage(), $e->getCode(), $e);
+        }
+
+        if (!\is_array($content)) {
+            throw new JsonException(sprintf('JSON content was expected to decode to an array, "%s" returned.', get_debug_type($content)));
+        }
+
+        return $this->jsonData = $content;
+    }
 }
diff --git a/src/Symfony/Component/BrowserKit/Tests/ResponseTest.php b/src/Symfony/Component/BrowserKit/Tests/ResponseTest.php
index d70433549bec9..5abde5967dc3a 100644
--- a/src/Symfony/Component/BrowserKit/Tests/ResponseTest.php
+++ b/src/Symfony/Component/BrowserKit/Tests/ResponseTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\BrowserKit\Tests;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\BrowserKit\Exception\JsonException;
 use Symfony\Component\BrowserKit\Response;
 
 class ResponseTest extends TestCase
@@ -74,4 +75,48 @@ public function testMagicToStringWithMultipleSetCookieHeader()
 
         $this->assertEquals($expected, $response->__toString(), '->__toString() returns the headers and the content as a string');
     }
+
+    public function testToArray()
+    {
+        $response = new Response('{"foo":"foo","bar":{"baz":"baz","qux":33,"quux":12345678901234567890}}');
+
+        $this->assertSame([
+            'foo' => 'foo',
+            'bar' => [
+                'baz' => 'baz',
+                'qux' => 33,
+                'quux' => '12345678901234567890',
+            ],
+        ], $response->toArray(), '->toArray returns an array representation of json content');
+    }
+
+    /**
+     * @dataProvider provideInvalidJson
+     */
+    public function testToArrayThrowsErrorOnInvalidJson(string $data)
+    {
+        $response = new Response($data);
+
+        $this->expectException(JsonException::class);
+        $this->expectExceptionMessage('Syntax error');
+
+        $response->toArray();
+    }
+
+    public function provideInvalidJson(): iterable
+    {
+        yield 'Empty string' => [''];
+        yield 'Not json' => ['freferfrefer'];
+        yield 'Malformed json' => ['{"foo", "bar", "baz"}'];
+    }
+
+    public function testToArrayThrowsErrorOnNonArray()
+    {
+        $response = new Response('"foo"');
+
+        $this->expectException(JsonException::class);
+        $this->expectExceptionMessage('JSON content was expected to decode to an array');
+
+        $response->toArray();
+    }
 }