said by Jchase :

Hi,

I'm located in Durham, NC and I have the most expensive RoadRunner package you can get here (10mbps down, 512kbps up max). When I do speedtests on websites, my speed both up and down usually reports pretty well (around 8mbps down, 350kbps up.) However, when I am uploading files, I can never break 60kbps.

said by Stray Bullet :

You're confusing kb/s & KB/s (Kilo-Bits & Kilo-Bytes)

512 kb/s = 62.5 KB/s