How long will my large file upload or download take?

It depends on the type of connection you have to the Internet. 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 minutes 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. Also, if you have a Free File Transfer Account, we may borrow some of your upload and download time to share with other account holders, particularly if you are a high volume user, which will increase your upload time from our file transfer website or your download time if you are a SendThisFileFileBox user.

 

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