Test your internet speed with Speedtest by Ookla, a free and reliable tool for desktop and mobile devices. © 2006-2026 Ookla, LLC., a Ziff Davis company. All Rights Reserved. Ookla®, Speedtest®, and Speedtest Intelligence® are among the federally registered trademarks. To accurately test your internet speed, we recommend Ookla Speedtest. Test your network performance and quality here: Ookla® and Speedtest. Test your internet speed on any device with Speedtest by Ookla, available for free on desktop and mobile apps. To accurately test your internet speed, we recommend Ookla Speedtest. Test your network performance and quality here: Ookla® and Speedtest. Speedtestを迅速かつ簡単に実行できるようになりました。無料のWindows用Speedtestデスクトップアプリをダウンロードし、ボタンをタッチしてインターネット速度を確認してください。 Ookla® and Speedtest® are among some of the federally registered trademarks of Ookla, LLC and may only be used with explicit written permission. © 2006-2026 Ookla. Matches supported platforms at: Matches supported platforms at: © 2006-2026 Ookla, LLC., an Accenture company. All Rights Reserved. Ookla ®, Speedtest ®, and Speedtest Intelligence ® are among the federally registered.