
Most often Internet Service Providers (ISPs) quote speeds in terms of mbps or Mbit/s, meaning Megabits per second, with speeds typically ranging between 20 and 200 mbps. The internet speed is the practically available bandwidth expressed as units of information per unit time. You can decide what unit to use as input, but make sure to flip the "use SI standard" checkbox if using SI units instead of the classic ones to get an accurate estimate from the calculator. If the size is displayed in both MB and MiB, in GB and in GiB, in TB and TiB, then it means that the first unit is a SI unit, whereas the second one is the classic.

However, it may also be in SI units with the same names which in fact denote smaller sample sizes. The size is typically given in MB, GB, TB, or PB as conventionally understood. In most cases the file size will be visible either in the download interface, or in the file system manager that you are using (e.g. The download size may vary from several megabytes to gigabytes to terabytes or petabytes. connection bandwidth) as well as the size of the file or files that are to be downloaded or uploaded. To use the calculator and esimate the required time for a download or upload, as well as the download ETA, two parameters need to be known: the internet speed (a.k.a. Does it matter what type of file(s) are being downloaded?.Why my downloads take a longer than the estimated time?.
