Check your Internet speed in under 20 seconds. The speed teste usually transfers less than 20 MB of data, but may transfer more data on fast connections. The internet speed test measures the speed of your internet connection. Your connection speed includes things like download speed and upload speed. The teste takes about 20 seconds. It figures out your internet speed by measuring how much data can move through your connection in that time. The teste uses different amounts of data depending on how fast your connection is and where you do the teste. For example, a typical test in the US uses 7.4 MB of data, but a teste outside the US uses about 2.4 MB. Mobile data charges could apply.