diff --git a/appinfo/info.xml b/appinfo/info.xml
index 6aba016522..9ae36f4e63 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -52,4 +52,9 @@
 			<order>5</order>
 		</navigation>
 	</navigations>
+
+	<commands>
+		<command>OCA\Calendar\Command\Export</command>
+		<command>OCA\Calendar\Command\Import</command>
+	</commands>
 </info>
diff --git a/lib/Command/Export.php b/lib/Command/Export.php
new file mode 100644
index 0000000000..9d18f8316a
--- /dev/null
+++ b/lib/Command/Export.php
@@ -0,0 +1,82 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright 2022 Christopher Ng <chrng8@gmail.com>
+ *
+ * @author Christopher Ng <chrng8@gmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Calendar\Command;
+
+use OC\Core\Command\Base;
+use OCA\Calendar\UserMigration\CalendarMigrator;
+use OCP\IUser;
+use OCP\IUserManager;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class Export extends Base {
+
+	/** @var IUserManager */
+	private $userManager;
+
+	/** @var CalendarMigrator */
+	private $calendarMigrator;
+
+	public function __construct(
+		IUserManager $userManager,
+		CalendarMigrator $calendarMigrator
+	) {
+		parent::__construct();
+		$this->userManager = $userManager;
+		$this->calendarMigrator = $calendarMigrator;
+	}
+
+	protected function configure() {
+		$this
+			->setName('calendar:export')
+			->setDescription('Export the calendars of a user')
+			->addArgument(
+				'user',
+				InputArgument::REQUIRED,
+				'User to export',
+			);
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int {
+		$user = $this->userManager->get($input->getArgument('user'));
+
+		if (!$user instanceof IUser) {
+			$output->writeln('<error>User ' . $input->getArgument('user') . ' does not exist</error>');
+			return 1;
+		}
+
+		try {
+			$this->calendarMigrator->export($user, $output);
+		} catch (\Exception $e) {
+			$output->writeln('<error>' . $e->getMessage() . '</error>');
+			return $e->getCode() !== 0 ? $e->getCode() : 1;
+		}
+
+		return 0;
+	}
+}
diff --git a/lib/Command/Import.php b/lib/Command/Import.php
new file mode 100644
index 0000000000..d11753acd2
--- /dev/null
+++ b/lib/Command/Import.php
@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright 2022 Christopher Ng <chrng8@gmail.com>
+ *
+ * @author Christopher Ng <chrng8@gmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Calendar\Command;
+
+use OC\Core\Command\Base;
+use OCA\Calendar\UserMigration\CalendarMigrator;
+use OCP\IUser;
+use OCP\IUserManager;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class Import extends Base {
+
+	/** @var IUserManager */
+	private $userManager;
+
+	/** @var CalendarMigrator */
+	private $calendarMigrator;
+
+	public function __construct(
+		IUserManager $userManager,
+		CalendarMigrator $calendarMigrator
+	) {
+		parent::__construct();
+		$this->userManager = $userManager;
+		$this->calendarMigrator = $calendarMigrator;
+	}
+
+	protected function configure() {
+		$this
+			->setName('calendar:import')
+			->setDescription('Import a calendar to a user\'s account')
+			->addArgument(
+				'user',
+				InputArgument::REQUIRED,
+				'User to import the calendar for',
+			)
+			->addArgument(
+				'path',
+				InputArgument::REQUIRED,
+				'Path to the *.ics file',
+			);
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int {
+		$user = $this->userManager->get($input->getArgument('user'));
+
+		[
+			'basename' => $filename,
+			'dirname' => $srcDir,
+		] = pathinfo($input->getArgument('path'));
+
+
+		if (!$user instanceof IUser) {
+			$output->writeln('<error>User ' . $input->getArgument('user') . ' does not exist</error>');
+			return 1;
+		}
+
+		try {
+			$this->calendarMigrator->import($user, $srcDir, $filename, $output);
+		} catch (\Exception $e) {
+			$output->writeln('<error>' . $e->getMessage() . '</error>');
+			return $e->getCode() !== 0 ? $e->getCode() : 1;
+		}
+
+		return 0;
+	}
+}
diff --git a/lib/UserMigration/CalendarMigrator.php b/lib/UserMigration/CalendarMigrator.php
new file mode 100644
index 0000000000..3e59b1cd4f
--- /dev/null
+++ b/lib/UserMigration/CalendarMigrator.php
@@ -0,0 +1,227 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright 2022 Christopher Ng <chrng8@gmail.com>
+ *
+ * @author Christopher Ng <chrng8@gmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Calendar\UserMigration;
+
+use Exception;
+use OC\Files\Filesystem;
+use OC\Files\View;
+use OCA\Calendar\AppInfo\Application;
+use OCA\DAV\CalDAV\CalDavBackend;
+use OCA\DAV\CalDAV\ICSExportPlugin\ICSExportPlugin;
+use OCA\DAV\CalDAV\Plugin as CalDAVPlugin;
+use OCA\DAV\Connector\Sabre\CachingTree;
+use OCA\DAV\Connector\Sabre\ExceptionLoggerPlugin;
+use OCA\DAV\Connector\Sabre\Server as SabreDavServer;
+use OCA\DAV\RootCollection;
+use OCP\Calendar\ICalendar;
+use OCP\Calendar\IManager as ICalendarManager;
+use OCP\IConfig;
+use OCP\IL10N;
+use OCP\IUser;
+use Psr\Log\LoggerInterface;
+use Sabre\CalDAV\Plugin;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class CalendarMigrator {
+
+	/** @var ICalendarManager */
+	private $calendarManager;
+
+	/** @var SabreDavServer */
+	private $sabreDavServer;
+
+	/** @var CalDavBackend */
+	private $calDavBackend;
+
+	// ICSExportPlugin is injected to use the mergeObjects() method and is not to be used as a SabreDAV server plugin
+	/** @var ICSExportPlugin */
+	private $icsExportPlugin;
+
+	/** @var IConfig */
+	private $config;
+
+	/** @var LoggerInterface */
+	private $logger;
+
+	/** @var IL10N */
+	private $l10n;
+
+	/** @var string */
+	public const USERS_URI_ROOT = 'principals/users/';
+
+	/** @var string */
+	public const FILENAME_EXT = '.ics';
+
+	public function __construct(
+		ICalendarManager $calendarManager,
+		CalDavBackend $calDavBackend,
+		ICSExportPlugin $icsExportPlugin,
+		IConfig $config,
+		LoggerInterface $logger,
+		IL10N $l10n
+	) {
+		$this->calendarManager = $calendarManager;
+		$this->calDavBackend = $calDavBackend;
+		$this->icsExportPlugin = $icsExportPlugin;
+		$this->config = $config;
+		$this->logger = $logger;
+		$this->l10n = $l10n;
+
+		$root = new RootCollection();
+		$this->sabreDavServer = new SabreDavServer(new CachingTree($root));
+		$this->sabreDavServer->addPlugin(new CalDAVPlugin());
+		$this->sabreDavServer->addPlugin(new ExceptionLoggerPlugin(Application::APP_ID, \OC::$server->getLogger()));
+	}
+
+	// TODO exract logic into this helper function
+	protected function getCalendarExports(): array {
+		return ['name' => '', 'data' => ''];
+	}
+
+	// TODO drop all unnecessary code for testing purposes and integrate with user_migration app when API is ready
+	public function export(IUser $user, OutputInterface $output): void {
+		$userId = $user->getUID();
+		$principalUri = CalendarMigrator::USERS_URI_ROOT . $userId;
+
+		/** @var array<int, array{name: string, data: string}> $calendars */
+		$calendars = array_values(array_filter(array_map(
+			/** @return array{name: string, data: string} */
+			function (ICalendar $calendar) use ($userId, $output) {
+				$calendarId = $calendar->getKey();
+				$calendarInfo = $this->calDavBackend->getCalendarById($calendarId);
+
+				if (!empty($calendarInfo)) {
+					$uri = $calendarInfo['uri'];
+					$path = Plugin::CALENDAR_ROOT . "/$userId/$uri";
+
+					// NOTE implementation below based on \Sabre\CalDAV\ICSExportPlugin::httpGet()
+
+					$properties = $this->sabreDavServer->getProperties($path, [
+						'{DAV:}resourcetype',
+						'{DAV:}displayname',
+						'{http://sabredav.org/ns}sync-token',
+						'{DAV:}sync-token',
+						'{http://apple.com/ns/ical/}calendar-color',
+					]);
+
+					// Filter out deleted calendars
+					if (!isset($properties['{DAV:}resourcetype']) || !$properties['{DAV:}resourcetype']->is('{' . Plugin::NS_CALDAV . '}calendar')) {
+						return;
+					}
+
+					if (!isset($properties['{http://nextcloud.com/ns}refresh-interval'])) {
+						$value = $this->config->getAppValue('dav', 'defaultRefreshIntervalExportedCalendars', ICSExportPlugin::DEFAULT_REFRESH_INTERVAL);
+						$properties['{http://nextcloud.com/ns}refresh-interval'] = $value;
+					}
+
+					// NOTE implementation below based on \Sabre\CalDAV\ICSExportPlugin::generateResponse()
+
+					$calDataProp = '{' . Plugin::NS_CALDAV . '}calendar-data';
+					$calendarNode = $this->sabreDavServer->tree->getNodeForPath($path);
+					$nodes = $this->sabreDavServer->getPropertiesForPath($path, [$calDataProp], 1);
+
+					$blobs = [];
+					foreach ($nodes as $node) {
+						if (isset($node[200][$calDataProp])) {
+							$blobs[$node['href']] = $node[200][$calDataProp];
+						}
+					}
+					unset($nodes);
+
+					$mergedCalendar = $this->icsExportPlugin->mergeObjects(
+						$properties,
+						$blobs,
+					);
+
+					return [
+						'name' => $calendarNode->getName(),
+						'data' => $mergedCalendar->serialize(),
+					];
+				}
+
+				$output->writeln("<error>Calendar $calendarId does not exist</error>");
+				return 1;
+			},
+			$this->calendarManager->getCalendarsForPrincipal($principalUri),
+		)));
+
+		foreach ($calendars as ['name' => $name, 'data' => $data]) {
+			// Set filename to sanitized calendar name appended with the date
+			$filename = preg_replace('/[^a-zA-Z0-9-_ ]/um', '', $name) . '-' . date('Y-m-d') . CalendarMigrator::FILENAME_EXT;
+
+			$this->writeExport(
+				$user,
+				$data,
+				// TESTING directory does not automatically get created so just write to user directory, this will be put in a zip with all other data anyways
+				// "/$userId/export/$appId",
+				"/$userId",
+				$filename,
+				$output,
+			);
+		}
+	}
+
+	/**
+	 * @param string $destDir relative path from the root of the user's calendar export folder
+	 * @throws Exception
+	 */
+	protected function writeExport(IUser $user, string $data, string $destDir, string $filename, OutputInterface $output): void {
+		$userId = $user->getUID();
+
+		// setup filesystem
+		// Requesting the user folder will set it up if the user hasn't logged in before
+		\OC::$server->getUserFolder($userId);
+		Filesystem::initMountPoints($userId);
+
+		$view = new View();
+
+		if ($view->file_put_contents("$destDir/$filename", $data) === false) {
+			throw new Exception('Could not export calendar');
+		}
+
+		$output->writeln("✅ Exported calendar of user $userId into $destDir/$filename");
+	}
+
+	/**
+	 * @throws Exception
+	 */
+	// TODO add import calendar functionality
+	public function import(IUser $user, string $srcDir, string $filename, OutputInterface $output): void {
+		$userId = $user->getUID();
+
+		$view = new View();
+
+		$output->writeln("Importing calendar of user $userId from $srcDir/$filename …");
+
+		$fileContents = $view->file_get_contents("$srcDir/$filename");
+		if ($fileContents === false) {
+			throw new Exception('Could not import calendar');
+		}
+
+		$output->writeln("✅ Imported calendar $srcDir/$filename to account of $userId");
+	}
+}