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Use Speedtest ® on all your devices with our free native apps. Download Speedtest apps for: Android. iOS. Windows. Mac. AppleTV. CLI. Use Speedtest on all your devices with our free desktop and mobile apps.
An internet speed test measures the connection speed and quality of your connected device to the internet. It does so by running multiple consecutive tests that analyze different aspects of your internet connection, namely ping (latency), download speed, and upload speed.Each of these values represents the connection's specific qualities, which you can read more about in the paragraph after ...
Speed up your site by using Google's infrastructure to serve the most popular, open-source JavaScript libraries. Learn more about the hosted libraries. Learn about Google's contributions to latest performance standards & protocols Protocols & Standards Learn about the latest protocols and web standards designed to make the web faster ...
Połączenia. Wiele Jedno. Używaj narzędzia Speedtest ® na wszystkich swoich urządzeniach dzięki naszym bezpłatnym aplikacjom natywnym. Pobierz aplikacje Speedtest dla: Android. iOS. Windows. Mac. AppleTV.
Speed of light. The speed of light, in any medium, which is usually denoted by , is a physical constant important in many areas of physics. It is denoted by 'c^0' especially in vacuum medium, although the symbol 'c' can be used to refer to that in any medium. It is exactly 299,792,458 metres per second (983,571,056 feet per second) by definition.
Speed is the magnitude of velocity (a vector), which indicates additionally the direction of motion. Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second (m/s), but the most common unit of speed in everyday usage is the kilometre per hour (km/h) or, in the US and the UK, miles per hour (mph).
Test your internet speed in seconds with Speedtest by Ookla, the global leader in broadband testing. Compare your results with other devices and locations.
