Test your ADSL, xDSL, cable, optical fiber or satellite broadband connection bandwidth. This speed test relies on an exclusive algorithm allowing you to measure accurately download bitrate, upload bitrate and latency of your connection. nPerf uses a worldwide dedicated servers network, which is optimized to deliver enough bitrate to saturate your connection so that we can measure its bitrate accurately. nPerf speed test is compatible with all broadband and mobile connections: ADSL, VDSL, cable, optical fiber FTTH / FTTB, satellite, WiFi, WiMax, cellular 2G / 3G / 4G (LTE), 5G. The nPerf speed test has been designed by telecom enthusiasts to enable you to accurately measure the speed of your Internet connection easily, in only one click! Oh... and this speed test is absolutely free of ads! Indicates the delay a small packet of data requires to make a round-trip from your computer to the nPerf server. The shorter the delay, the most reactive is your connection.