How Can I Tell How Long It Will Take To Upload a File?

Learning Center
File uploading time depends on the type of Internet connection. Here are some formulas you can use to make a rough estimate*:

    b = bits (there are eight bits to a byte)
    B = bytes (file sizes are normally expressed in bytes)
    Kb = kilobits = thousands of bits
    Kb/s = kilobits per second = thousands of bits per second
    Mb = megabits = millions of bits
    Mb/s = megabits per second = millions of bits per second
    MB = megabytes = millions of bytes
  • 56k dial-up modem -- upload and download 3.0 min per MB
  • DSL/ADSL -- upload 2 MB per minute [approximately 260 Kb/s]; download 10 MB per minute [approximately 1,300 Kb/s]
  • standard cable (1.5 Mb/s system) -- upload 2 MB per minute [approximately 260 Kb/s]; download 10 MB per minute [approximately 1,300 Kb/s]
  • high speed cable (3.0 Mb/s system) -- upload 4 MB per minute [approximately 512 Kb/s]; download 20 MB per minute [approximately 2,600 Kb/s]
*Note: Internet connections can vary greatly. These estimates assume an 85% efficient connection, which is about average.