Best All Round Data Copying Calculator

What is the best calculator available for calculating how long it will take to move data in GigaBytes from one server to another. I did read somwhere there that Windows 7 Calculator will do this but I have been through all the options and can't find it in there anywhere so either I am being blind or it does not exist in there.

I know a calculator willo only be a guide as it does not account for variables however I am just trying to get a fairly accurate feel for how long it will take.

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aleghartConnect With a Mentor Commented:
There are a few variables:  one large file versus thousands of smaller files/folders.  Also the storage speed...older desktop that maxes out at 20-25MB/sec, notebook with 40-60MB/sec, or a server with a fast array capable of 100+MB/sec.

One single file of 1GB takes a minute from my notebook to a server with RAID10.  1GB of small JPEG files takes 30+ minutes, more to a RAID5 or 6 array.  Even longer to an older server with RAID5, P3 processor and a desktop-class NIC.
The Windows 7 calculator has a Programmer calculator capable of converting data units, but it is not capable of measuring bandwidth or throughput. To get to the Programmer calculator, open Windows 7 Calculator > View > Programmer.

However, there is a desktop gadget called "Speed Test." It is a free download for Windows 7 users and it can, among other things, calculate bandwidth speed, website speed, LAN bandwidth, upload and download data transfers.

Go to It is currently in the Top Rated section.
NorthstarITAuthor Commented:
Thanks for the suggestion.

I am looking for more of a calculator on how long, in an ideal world, would it take to transfer 483GB of data from one box to another via a single GigaBit connection on each box via a gigabit switch with no other hardware connected


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I misunderstood: I thought you were looking for a tool that could measure your line's actual throughput, i.e. the transfer rate. Once you have that, you could use a simple online calculator, plug in the transfer rate, and then arrive at the transfer time.
NorthstarITAuthor Commented:
Thank you for your comment on this, useful information. It is one server RAID 5 talking to another server RAID5 across a single 1 Gigabit cat 5 into a 1gb switch with no additional hardware attached
James MurrellProduct SpecialistCommented:
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