Question: how long does it take to transfer 1tb over usb 3?
Answer: So assuming 1TB is as usual 1024GB → 1048576 MB. It would take 1048576/60=17476.2666667 seconds, or 291.271111111 minutes, around 4.9 hours. For USB 3.0 the maximum if 5Gb/s, translating to 625MB/s. Same math: 1048576/625=1677.7216 sec, 27.9 minutes.