# How do I figure out how long it will take to transfer a file?

We have a decent office ethernet connection in a startup incubator. Any guesses on how long would a download of this size of data would take?

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Download 100MB from Amazon and multiply by 3000? Otherwise, if you can't tell us what your internet provider is claiming your network connection speed is, at least run some speedtest somewhere and tell us how fast your connection sometimes is so we have a vague idea of what to tell you. – DerfK May 3 '11 at 17:53
As long as it would take to copy to an external drive and ship it. – DanBig May 3 '11 at 17:53
I liked the comment about the soda and the micturation. Oh well. – mfinni May 3 '11 at 18:39
@mfinni I was mod'd. Sensibilities, and all that. Ah well. – Holocryptic May 3 '11 at 18:42

The Calculation:
To figure out how long it takes to download a file, you take the size of the file and divide it by the rate (keeping the time unit).

So for example if you need to transfer 50MBytes and your transfer rate is 1Mbyte a second:

``````50M/1M ( A Second ) = 50 (Seconds).
50M/2M ( A Second ) = 25 (Seconds).
``````

You can also just type "50 Megabytes at 1 Megabyte a second" into wolframalpha: http://www.wolframalpha.com/input/?i=50+Megabtyes+at+1+Megabyte+a+second

How Fast am I?