Transfer Speed Calculator

Transfer Speed Calculator

Estimate how long it takes to transfer data based on file size, transfer speed, overhead, and whether you use 1000 or 1024 as the kilo factor.

Choose bytes or bits depending on how your data size is specified.
For typical internet links, use Mbps. For USB or disk speeds, MB/s or GB/s may be more appropriate.
%
This reduces effective throughput. 0% = ideal; 10–20% is common in real networks.
Use 1024 for OS-style sizes, or 1000 for marketing/line rate calculations.

Results:

Enter file size and transfer speed, adjust overhead and kilo, then click Calculate to see the estimated transfer time.