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diff --git a/www/wiki/maintenance/benchmarks/bench_Wikimedia_base_convert.php b/www/wiki/maintenance/benchmarks/bench_Wikimedia_base_convert.php
new file mode 100644
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+++ b/www/wiki/maintenance/benchmarks/bench_Wikimedia_base_convert.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ * Benchmark for Wikimedia\base_convert()
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Benchmark
+ * @author Tyler Romeo
+ */
+
+require_once __DIR__ . '/Benchmarker.php';
+
+/**
+ * Maintenance script that benchmarks Wikimedia\base_convert().
+ *
+ * Code exists in vendor repository brought in via composer.
+ *
+ * @ingroup Benchmark
+ */
+class BenchWikimediaBaseConvert extends Benchmarker {
+	public function __construct() {
+		parent::__construct();
+		$this->addDescription( 'Benchmark for Wikimedia\base_convert.' );
+		$this->addOption( "inbase", "Input base", false, true );
+		$this->addOption( "outbase", "Output base", false, true );
+		$this->addOption( "length", "Size in digits to generate for input", false, true );
+	}
+
+	public function execute() {
+		$inbase = $this->getOption( "inbase", 36 );
+		$outbase = $this->getOption( "outbase", 16 );
+		$length = $this->getOption( "length", 128 );
+		$number = self::makeRandomNumber( $inbase, $length );
+
+		$this->bench( [
+			[
+				'function' => 'Wikimedia\base_convert',
+				'args' => [ $number, $inbase, $outbase, 0, true, 'php' ]
+			],
+			[
+				'function' => 'Wikimedia\base_convert',
+				'args' => [ $number, $inbase, $outbase, 0, true, 'bcmath' ]
+			],
+			[
+				'function' => 'Wikimedia\base_convert',
+				'args' => [ $number, $inbase, $outbase, 0, true, 'gmp' ]
+			],
+		] );
+	}
+
+	protected static function makeRandomNumber( $base, $length ) {
+		$baseChars = '0123456789abcdefghijklmnopqrstuvwxyz';
+		$res = '';
+		for ( $i = 0; $i < $length; $i++ ) {
+			$res .= $baseChars[mt_rand( 0, $base - 1 )];
+		}
+
+		return $res;
+	}
+}
+
+$maintClass = BenchWikimediaBaseConvert::class;
+require_once RUN_MAINTENANCE_IF_MAIN;