diff --git a/README.md b/README.md
index 967ac7e..7c7c38f 100644
--- a/README.md
+++ b/README.md
@@ -123,6 +123,16 @@ Example:
 composer patch-remote-to-local patches
 ```
 
+### Patch Migrate
+
+```sh
+composer patch-migrate-config
+```
+
+The patch migrate command migrates your Composer Patches 1 configuration to the Composer Patches 2 format. It handles the migration of patches, ignored patches, patch levels (converted to package depths).
+
+After a successful migration, the command automatically runs `patches-relock` and `patches-repatch` to ensure your project is up-to-date with the new configuration.
+
 ## Credits
 
 Stephan Zeidler for [Ramsalt Lab AS](https://ramsalt.com)
diff --git a/src/Composer/CommandProvider.php b/src/Composer/CommandProvider.php
index 54a0bff..9900c7a 100644
--- a/src/Composer/CommandProvider.php
+++ b/src/Composer/CommandProvider.php
@@ -16,6 +16,7 @@ public function getCommands() {
       new PatchRemoveCommand(),
       new PatchListCommand(),
       new PatchMoveToLocalCommand(),
+      new PatchMigrateCommand(),
     ];
   }
 }
diff --git a/src/Composer/PatchMigrateCommand.php b/src/Composer/PatchMigrateCommand.php
new file mode 100644
index 0000000..c067614
--- /dev/null
+++ b/src/Composer/PatchMigrateCommand.php
@@ -0,0 +1,126 @@
+<?php
+
+namespace szeidler\ComposerPatchesCLI\Composer;
+
+use Composer\Json\JsonFile;
+use Composer\Json\JsonManipulator;
+use szeidler\ComposerPatchesCLI\Exception\PatchMigrateConfigurationExistsException;
+use szeidler\ComposerPatchesCLI\Exception\PatchMigrateNoConfigurationFoundException;
+use Symfony\Component\Console\Input\ArrayInput;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class PatchMigrateCommand extends PatchBaseCommand {
+
+  protected function configure(): void {
+    $this->setName('patch-migrate-config')
+      ->setDescription('Migrate Composer Patches 1 configuration to Composer Patches 2.');
+
+    parent::configure();
+  }
+
+  protected function execute(InputInterface $input, OutputInterface $output): int {
+    $extra = $this->requireComposer()->getPackage()->getExtra();
+    $patchType = $this->getPatchType();
+
+    if (isset($extra['composer-patches'])) {
+      throw new PatchMigrateConfigurationExistsException('Composer Patches 2 configuration already exists.');
+    }
+
+    if ($patchType !== self::PATCHTYPE_ROOT_CP1 && $patchType !== self::PATCHTYPE_FILE_CP1) {
+      throw new PatchMigrateNoConfigurationFoundException('No Composer Patches 1 configuration found to migrate.');
+    }
+
+    $composer_filename = 'composer.json';
+    $composer_file = new JsonFile($composer_filename);
+    $composer_manipulator = new JsonManipulator(file_get_contents($composer_file->getPath()));
+
+    $patches = $this->grabPatches();
+
+    if ($patchType === self::PATCHTYPE_ROOT_CP1) {
+      $output->writeln('<info>Migrating patches from root composer.json...</info>');
+      
+      // Move patches to the new location.
+      $composer_manipulator->removeSubNode('extra', 'patches');
+      $composer_manipulator->addSubNode('extra', 'composer-patches.patches', $patches);
+
+      // Handle patches-ignore -> ignore-dependency-patches
+      if (isset($extra['patches-ignore'])) {
+        $ignored = [];
+        foreach ($extra['patches-ignore'] as $package => $package_patches) {
+            // CP1 patches-ignore format is slightly different, but often it was just a list of patches.
+            // "patches-ignore": { "source/package": { "target/package": { "description": "url" } } }
+            // CP2 ignore-dependency-patches is just a list of packages whose patches should be ignored.
+            // "ignore-dependency-patches": ["some/package"]
+            $ignored[] = $package;
+        }
+        $composer_manipulator->removeSubNode('extra', 'patches-ignore');
+        $composer_manipulator->addSubNode('extra', 'composer-patches.ignore-dependency-patches', array_unique($ignored));
+      }
+
+      // Handle patchLevel -> package-depths
+      if (isset($extra['patchLevel'])) {
+        $depths = [];
+        foreach ($extra['patchLevel'] as $package => $level) {
+            // Convert -p1 to 1
+            $depths[$package] = (int) str_replace('-p', '', $level);
+        }
+        $composer_manipulator->removeSubNode('extra', 'patchLevel');
+        $composer_manipulator->addSubNode('extra', 'composer-patches.package-depths', $depths);
+      }
+
+      // Handle composer-exit-on-patch-failure -> exit-on-patch-failure
+      if (isset($extra['composer-exit-on-patch-failure'])) {
+        $composer_manipulator->removeSubNode('extra', 'composer-exit-on-patch-failure');
+        $composer_manipulator->addSubNode('extra', 'composer-patches.exit-on-patch-failure', $extra['composer-exit-on-patch-failure']);
+      }
+
+      // Handle composer-patches-skip-reporting -> skip-reporting
+      if (isset($extra['composer-patches-skip-reporting'])) {
+        $composer_manipulator->removeSubNode('extra', 'composer-patches-skip-reporting');
+        $composer_manipulator->addSubNode('extra', 'composer-patches.skip-reporting', $extra['composer-patches-skip-reporting']);
+      }
+
+      // Handle enable-patching (cleanup)
+      if (isset($extra['enable-patching'])) {
+        $composer_manipulator->removeSubNode('extra', 'enable-patching');
+      }
+
+      // Store the manipulated JSON file.
+      if (!file_put_contents($composer_filename, $composer_manipulator->getContents())) {
+        throw new \Exception('Composer file could not be saved.');
+      }
+    }
+    elseif ($patchType === self::PATCHTYPE_FILE_CP1) {
+      $patches_filename = $extra['patches-file'];
+      $output->writeln("<info>Migrating patches from $patches_filename...</info>");
+
+      // Update composer.json to use the new patches-file location.
+      $composer_manipulator->removeSubNode('extra', 'patches-file');
+      $composer_manipulator->addSubNode('extra', 'composer-patches.patches-file', $patches_filename);
+      
+      if (!file_put_contents($composer_filename, $composer_manipulator->getContents())) {
+        throw new \Exception('Composer file could not be saved.');
+      }
+
+      // Update the patches file itself.
+      $patches_file = new JsonFile($patches_filename);
+      $patches_manipulator = new JsonManipulator(file_get_contents($patches_file->getPath()));
+      // CP2 expects patches to be in the root "patches" key of the patches-file, which is the same as CP1.
+      // So no changes might be needed to the content of the file itself if it only contains "patches".
+      // However, we should check if there's anything else in there.
+    }
+
+    $output->writeln('Migration completed successfully.');
+    
+    $application = $this->getApplication();
+    $application->setAutoExit(FALSE);
+    $output->writeln('<info>Relocking patches...</info>');
+    $application->run(new ArrayInput(['command' => 'patches-relock']), $output);
+
+    $output->writeln('<info>Repatching dependencies...</info>');
+    $application->run(new ArrayInput(['command' => 'patches-repatch']), $output);
+
+    return 0;
+  }
+}
diff --git a/src/Exception/PatchMigrateConfigurationExistsException.php b/src/Exception/PatchMigrateConfigurationExistsException.php
new file mode 100644
index 0000000..b326bbb
--- /dev/null
+++ b/src/Exception/PatchMigrateConfigurationExistsException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace szeidler\ComposerPatchesCLI\Exception;
+
+/**
+ * Exception thrown when Composer Patches 2 configuration already exists.
+ */
+class PatchMigrateConfigurationExistsException extends PatchMigrateException {
+}
diff --git a/src/Exception/PatchMigrateException.php b/src/Exception/PatchMigrateException.php
new file mode 100644
index 0000000..60f21bd
--- /dev/null
+++ b/src/Exception/PatchMigrateException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace szeidler\ComposerPatchesCLI\Exception;
+
+/**
+ * Base exception for patch migration errors.
+ */
+class PatchMigrateException extends \Exception {
+}
diff --git a/src/Exception/PatchMigrateNoConfigurationFoundException.php b/src/Exception/PatchMigrateNoConfigurationFoundException.php
new file mode 100644
index 0000000..f460f9e
--- /dev/null
+++ b/src/Exception/PatchMigrateNoConfigurationFoundException.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace szeidler\ComposerPatchesCLI\Exception;
+
+/**
+ * Exception thrown when no Composer Patches 1 configuration is found to migrate.
+ */
+class PatchMigrateNoConfigurationFoundException extends PatchMigrateException {
+}
diff --git a/tests/PatchMigrateCommandTest.php b/tests/PatchMigrateCommandTest.php
new file mode 100644
index 0000000..df2e111
--- /dev/null
+++ b/tests/PatchMigrateCommandTest.php
@@ -0,0 +1,136 @@
+<?php
+
+namespace szeidler\ComposerPatchesCLI\Tests;
+
+use szeidler\ComposerPatchesCLI\Composer\PatchMigrateCommand;
+use szeidler\ComposerPatchesCLI\Exception\PatchMigrateConfigurationExistsException;
+use szeidler\ComposerPatchesCLI\Exception\PatchMigrateNoConfigurationFoundException;
+
+/**
+ * Tests the PatchMigrateCommand class.
+ */
+class PatchMigrateCommandTest extends PatchCommandTestBase {
+
+  /**
+   * Tests migrating patches from the root composer.json.
+   */
+  public function testMigrateRoot() {
+    $composer_json = [
+      'name' => 'test/project',
+      'extra' => [
+        'patches' => [
+          'vendor/package' => [
+            'description' => 'https://example.com/patch.patch',
+          ],
+        ],
+        'patches-ignore' => [
+          'dependency/package' => [
+            'vendor/package' => [
+                'ignored patch' => 'https://example.com/ignored.patch'
+            ]
+          ],
+        ],
+        'patchLevel' => [
+          'vendor/package' => '-p2',
+        ],
+        'composer-exit-on-patch-failure' => true,
+        'enable-patching' => true,
+      ],
+    ];
+    file_put_contents($this->composerJsonPath, json_encode($composer_json, JSON_PRETTY_PRINT));
+
+    $commandTester = $this->getCommandTester(PatchMigrateCommand::class);
+    $commandTester->execute([]);
+
+    $this->assertStringContainsString('Migrating patches from root composer.json...', $commandTester->getDisplay());
+    $this->assertStringContainsString('Migration completed successfully.', $commandTester->getDisplay());
+    $this->assertStringContainsString('Relocking patches...', $commandTester->getDisplay());
+    $this->assertStringContainsString('Repatching dependencies...', $commandTester->getDisplay());
+
+    $updated_composer_json = json_decode(file_get_contents($this->composerJsonPath), TRUE);
+    
+    $this->assertArrayNotHasKey('patches', $updated_composer_json['extra']);
+    $this->assertArrayHasKey('composer-patches', $updated_composer_json['extra']);
+    $this->assertEquals($composer_json['extra']['patches'], $updated_composer_json['extra']['composer-patches']['patches']);
+    
+    $this->assertArrayNotHasKey('patches-ignore', $updated_composer_json['extra']);
+    $this->assertEquals(['dependency/package'], $updated_composer_json['extra']['composer-patches']['ignore-dependency-patches']);
+    
+    $this->assertArrayNotHasKey('patchLevel', $updated_composer_json['extra']);
+    $this->assertEquals(['vendor/package' => 2], $updated_composer_json['extra']['composer-patches']['package-depths']);
+    
+    $this->assertArrayNotHasKey('composer-exit-on-patch-failure', $updated_composer_json['extra']);
+    $this->assertTrue($updated_composer_json['extra']['composer-patches']['exit-on-patch-failure']);
+
+    $this->assertArrayNotHasKey('enable-patching', $updated_composer_json['extra']);
+  }
+
+  /**
+   * Tests migrating patches from an external patches file.
+   */
+  public function testMigrateFile() {
+    $patches_file = 'patches.json';
+    $composer_json = [
+      'name' => 'test/project',
+      'extra' => [
+        'patches-file' => $patches_file,
+      ],
+    ];
+    file_put_contents($this->composerJsonPath, json_encode($composer_json, JSON_PRETTY_PRINT));
+
+    $patches_json = [
+      'patches' => [
+        'vendor/package' => [
+          'description' => 'https://example.com/patch.patch',
+        ],
+      ],
+    ];
+    file_put_contents($this->tempDir . '/' . $patches_file, json_encode($patches_json, JSON_PRETTY_PRINT));
+
+    $commandTester = $this->getCommandTester(PatchMigrateCommand::class);
+    $commandTester->execute([]);
+
+    $this->assertStringContainsString("Migrating patches from $patches_file...", $commandTester->getDisplay());
+    $this->assertStringContainsString('Migration completed successfully.', $commandTester->getDisplay());
+    $this->assertStringContainsString('Relocking patches...', $commandTester->getDisplay());
+    $this->assertStringContainsString('Repatching dependencies...', $commandTester->getDisplay());
+
+    $updated_composer_json = json_decode(file_get_contents($this->composerJsonPath), TRUE);
+    $this->assertArrayNotHasKey('patches-file', $updated_composer_json['extra']);
+    $this->assertEquals($patches_file, $updated_composer_json['extra']['composer-patches']['patches-file']);
+  }
+
+  /**
+   * Tests that an exception is thrown when no migration is needed.
+   */
+  public function testNoMigrationNeeded() {
+    $composer_json = [
+      'name' => 'test/project',
+      'extra' => [],
+    ];
+    file_put_contents($this->composerJsonPath, json_encode($composer_json, JSON_PRETTY_PRINT));
+
+    $commandTester = $this->getCommandTester(PatchMigrateCommand::class);
+    $this->expectException(PatchMigrateNoConfigurationFoundException::class);
+    $commandTester->execute([]);
+  }
+
+  /**
+   * Tests that an exception is thrown when CP2 configuration already exists.
+   */
+  public function testAlreadyHasCP2() {
+    $composer_json = [
+      'name' => 'test/project',
+      'extra' => [
+        'composer-patches' => [
+          'patches' => [],
+        ],
+      ],
+    ];
+    file_put_contents($this->composerJsonPath, json_encode($composer_json, JSON_PRETTY_PRINT));
+
+    $commandTester = $this->getCommandTester(PatchMigrateCommand::class);
+    $this->expectException(PatchMigrateConfigurationExistsException::class);
+    $commandTester->execute([]);
+  }
+}