Throughput is the amount of data that can be transferred over your Internet connection at one point in time. kbps or Kilo Bits Per Second is the rate at which 1000 bits of data travels across your internet connection. A bit is the smallest unit of digital information. 8 bits make up 1 byte. The test shows the current throughput you can get on your Internet connection. 1 Mbit/s = one million bits per second.