Calculate Data Transfer Time

Calculate data transfer time for different USB versions and internet connections. Enter the data size and click Calculate.

Data size:

Transfer via
r w	USB 1.0 Low Speed r: 1 Mbit/s w: 0.75 Mbit/s	USB 1.0 Full Speed r: 8 Mbit/s w: 6 Mbit/s	USB 2.0 Hi Speed r: 310 Mbit/s w: 240 Mbit/s	USB 3.0 SuperSpeed r: 2600 Mbit/s w: 2000 Mbit/s	USB 3.1 SuperSpeed + r: 5200 Mbit/s w: 4000 Mbit/s
r = read, w = write
d u	56k Modem d: 0.05 Mbit/s u: 0.03 Mbit/s	ISDN d: 0.075 Mbit/s u: 0.075 Mbit/s	2x ISDN d: 0.15 Mbit/s u: 0.15 Mbit/s	DSL d: 10 Mbit/s u: 1 Mbit/s	Fiber-optic d: 100 Mbit/s u: 50 Mbit/s
d = download, u = upload
Individual value 1:
Individual value 2:

The speed inscriptions are average practical values, not the theoretical maximal values. For DSL and optical fiber, there are many more speed rates. With many and small files, the transfer speed can decrease. The conversion factor for the prefixes is 1000, e.g. 1 GB = 1000 MB. If you want to know how fast your internet connection is, search for "internet speed test".